UMEKAWA,Hisashi - Faculty of Engineering Science Department of Mechanical Engineering

UMEKAWA, Hisashi

Faculty, Department/Institute

Faculty of Engineering Science Department of Mechanical Engineering

Academic status (qualification)

Professor Apr. 1,2009

Undergraduate Degrees・University

Kansai University Faculty of Engineering1986 Graduated

Graduate Degrees・University

Kansai University Master's Degree Program 1988 Completed

Academic Degrees

Master of Engineering Mar. 1988 Kansai University
Doctor of Engineering Sep. 1998 Kansai University

Research fields	keyword
Thermal engineering

research topic	C.H.F under oscillatory flow condition
Study theme state	Joint research within Japan
research duration
Research Programs
keyword	C.H.F,Heat-transfer,Flow Oscillation
Research field
Research Topics Overview

research topic	Flow Visvalization of Fluidized-bed by Neutron radiography
Study theme state	Joint research within Japan
research duration
Research Programs
keyword	Fluidized-bed,Neutron Radiography,Visvalization
Research field
Research Topics Overview

research topic	Boiling Heat Transfer of liquid nitrogen
Study theme state	Joint Research within Institution
research duration
Research Programs
keyword	Liquid nitrogen,Natural circulation,Flow oscillation,Boiling
Research field
Research Topics Overview

所属学会・団体名	役職名 (役職在任期間)
	20230000(2025/), 20200000(2021/), (2018/9/), 20150400(2016/3/)
	20230000(2025/), 20220000(), 20200000(2021/), (2023/7/), 20130800(2015/7/), 20120800(2014/7/)
	20160400(2018/3/), 20160500(2018/4/)
	20130629(2023/)

Research Publications

No.	Type of publication	Date of publication (Date of presentation)	Title	Type of research result	Jointly authored or single authored	Publisher and journal name	Volume number
1	International academic conference8	2018/3/12～2018/3/122018,03,12,2018,03,12	The flow characteristics in a distillation column. Influence of clearance of packing and physical property of working fluid	Other	Co-author		B1116
2	International academic conference8	2018/3/12～2018/3/122018,03,12,2018,03,12	Classification of Critical Heat Flux Mechanisms for Downward Flow	Other	Co-author		B1128
3	Papers1	2018/3～2018/32018,03,00,2018,03,00	Prediction Model of Critical Heat Flux for Vertical Downward Flow	Academic Journal	Co-author	Transaction of the JSME	84(859)
4	Academic presentation7	2017/6～2017/62017,06,00,2017,06,00	Prediction Model of Critical Heat Flux for Vertical Downward Flow	Other	Co-author		B123
5	Papers1	2017/3～2017/32017,03,00,2017,03,00	Flow Characteristics of Counter-current Two-ohase Flow in Structured Packings -Influence of Clearance of Packings-	Academic Journal	Co-author	Japanese Journal of Multiphas Flow	30(5)
6	Book2	2017～20172017,00,00,2017,00,00	Convectice Boiling under Unstable Flow Conditions	Monograph	Co-authored chapter	Elsevier・Boiling -Reserch and Advances-	297-315
7	Academic presentation7	2016/9/8～2016/9/82016,09,08,2016,09,08	Estimation of the Water Behavior in Defrosting Process by Using Neutron Radiography	Other	Co-author		E224-1
8	Academic presentation7	2016/8/8～2016/8/82016,08,08,2016,08,08	Flow Characteristics of Counter-current Two-ohase Flow in Structured Packings -Influence of Clearance of Packings-	Other	Co-author		P04-1
9	Papers1	2015/10/31～2015/10/312015,10,31,2015,10,31	Investigation of Water Behavior in Defrosting Process by Using Neutron Radiography	Academic Journal	Co-author	Trans. of the JSRAE	15-29_OA
10	Academic presentation7	2015/10/24～2015/10/242015,10,24,2015,10,24	Influence of Heating Length on Entrainment in a Boiling Two-Phase Flow -Indirect ealuation based on the liquid filmflow measurement-	Other	Co-author	日本機械学会熱工学コンファレンス2015講演論文集	B142
11	Academic presentation7	2015/10/24～2015/10/242015,10,24,2015,10,24	Critical Heat Flux for Downward Flow in a Vertical Mini-Channel -The Case of 20mm in innner Diameter-	Other	Co-author	日本機械学会熱工学コンファレンス2015講演論文集	B143
12	Papers1	2015/9/10～2015/9/102015,09,10,2015,09,10	The Influence of the Heating Condition on the Void Fraction of Boiling Channel	Academic Journal	Co-author	Physics Procedia	Vol.69, 599-606
13	International academic conference8	2015/5/10～2015/6/152015,05,10,2015,06,15	Dryout in a Natural Circulation Loop under Density Wave Oscillation	Other	Co-author	Japan-U.S. Seminar on Two-Phase Flow Dynamics	5.1
14	Papers1	2015～20152015,00,00,2015,00,00	Influence of tube diameter on critical heat flux in downward flow,	Academic Journal	Co-author	Multiphase Science and Technolog	27(1)77-97
15	International academic conference8	2014/10/5～2014/10/102014,10,05,2014,10,10	The Influence of the Heating Condition on the Void Fraction of Boiling Channel	Other	Co-author	10th World Conference on Neutron Radiography	187
16	Papers1	2014/9/16～2014/9/162014,09,16,2014,09,16	Dryout of Counter-Current Two-Phase Flow in a Vertical Tube	Academic Journal	Co-author	International Journal of Multiphase Flow	Vol.67 54-64
17	International academic conference8	2014/8/13～2014/8/132014,08,13,2014,08,13	Quantitative estimation of frost formation on plate-fin tube Heat exchanger by neutron radiography	Other	Co-author	Proceedings of the 15th International Heat Transfer Conference	IHTC15-9144
18	International academic conference8	2014/8/12～2014/8/122014,08,12,2014,08,12	Effect of Flow Pattern on Critical Heat Flux	Other	Co-author	Proceedings of the 15th International Heat Transfer Conference	IHTC15-9376
19	Academic presentation7	2014/7/28～2014/7/282014,07,28,2014,07,28	Heat transfer and flow characteristics of liquid nitrogen in natural circulation loop with parallel tubes	Other	Co-author	JSMF Symposium on Multiphase Flow 2014	C143
20	Academic presentation7	2014/6/26～2014/6/262014,06,26,2014,06,26	Type of Critical Heat Flux for Downward Flow in a vertical Tube	Other	Co-author	The 19th National Symposium on Power and Energy Systems(SPES 2014)	No.14-11 167-172
21	Papers1	2014/3/15～2014/3/152014,03,15,2014,03,15	Influence of the Flow Pattern on Critical Heat Flux	Academic Journal	Co-author	Japanese Journal of Multiphase Flow	Vol.27 No.5
22	Research report21	2013/12/4～2013/12/42013,12,04,2013,12,04	Evaluation of Convective Boiling in Oscillatory Flow	Other	Co-author
23	Papers1	2013/11/1～2013/11/12013,11,01,2013,11,01	CHF in a Circumferentially Nonuniformly Heated Tube Under Low-Pressure and Low-Mass-Flux Condition (Influence of Inclined Angles Under High-Heat-Flux Condition)	Academic Journal	Co-author	Heat Transfer Engineering	Vol.35,No.5, pp.430-439
24	Research report21	2013/11/1～2013/11/12013,11,01,2013,11,01	Characteristics of the Void Fraction under aForced Convective Flow Boiling	In-house publication	Co-author	KURRI Progress Reoort2012	PR4-4
25	Papers1	2013/9/15～2013/9/152013,09,15,2013,09,15	Characteristics of Trailing Bubble Velocity in Consecutive Large Bubbles Rising through a Inclined Tube	Academic Journal	Co-author	Japanese Journal of Multiphase Flow	Vol.27 No.3 306-315
26	Academic presentation7	2013/8/9～2013/8/92013,08,09,2013,08,09	Influence of the Flow Pattern on Critical Heat Flux	Other	Co-author	JSMF	E134
27	Survey report22	2013/7/31～2013/7/312013,07,31,2013,07,31	Report on the Great East Japan Earthquake Disaster Mechanical Enginnering Volume	Monograph	Co-authored chapter	Maruzen
28	Academic presentation7	2013/6/13～2013/6/212013,06,13,2013,06,21	Effect of Taylor Bubble Wake on the Trailing Bubble in a Inclined Upward Flow	Other	Co-author	JSME	323-326
29	Magazine article15	2013/4～2013/42013,04,00,2013,04,00	For the Discussion of the Nuclear Power	Academic Journal	Single-Author		Vol.52 No.219 p6
30	Papers1	2013/3～2013/32013,03,00,2013,03,00	Pseudo dynamic visualization of boiling two-phase flow under oscillatory flow condition	Academic Journal	Co-author	Elsevier	Vol.43, pp.269-276
31	Magazine article15	2012/12/15～2012/12/152012,12,15,2012,12,15	JSMF25th Anniversary Discussion by the Recent Presidents -The Role of the Society, Past, Present and Future-	Academic Journal	Co-authored chapter	Japanese Journal of Multiphase Flow	Vol.26,No.4, pp.368-385
32	Academic presentation7	2012/11/17～2012/11/182012,11,17,2012,11,18	Influence of the Flow Pattern on Critical Heat Flux	Other	Co-author	Proceedings of Thermal Engineering Conference '12	111-112
33	Academic presentation7	2012/10/4～2012/10/52012,10,04,2012,10,05	Visualization of Frosting Phenomena by Using Neutron Radiography		Co-author
34	Research report21	2012/10/1～2012/10/12012,10,01,2012,10,01	Quantitative Evaluation of Void Wave Propagatino in Oscillatory Flow by Using Neutron Radiography	In-house publication	Co-author	KURRI Progress Report 2011	198
35	International academic conference8	2012/9/23～2012/9/272012,09,23,2012,09,27	Oil-water mixture in horizontal mini-channel	Other	Co-author	6th Japanese-European Two-Phase Flow Group Meeting
36	International academic conference8	2012/9/23～2012/9/272012,09,23,2012,09,27	Qualitatively measurement of void fraction under oscillatory flow condition	Other	Co-author	6th Japanese-European Two-Phase Flow Group Meeting
37	Papers1	2012/9/15～2012,09,15,,,	Flow Characteristics of Oil-Water Mixture in Horizontal Mini-Channel (Influence of Inner Diameter and Geometry of Mixer)	Academic Journal	Co-author	Japanese Journal Multiphase Flow
38	Academic presentation7	2012/9/12～2012/9/142012,09,12,2012,09,14	Quantitative Evaluation of Frosting Phenomena by Using Neutron Radiography		Co-author		621-624
39	Academic presentation7	2012/8/11～2012,08,11,,,	Flow Characteristics of Oil-Water Mixture in Horizontal Mini-Channel (Influence of Inner Diameter)	Other	Co-author	JSMF Annual Meeting 2012	364-365
40	Academic presentation7	2012/8/9～2012,08,09,,,	Interactino between consecutive bubbles-Effect of tube inclination-	Other	Co-author	JSMF Annual Meeting 2012	90-91
41	International academic conference8	2012/7/8～2012,07,08,,,	Pattern Dynamics Approach to Two-Phase Flow Dynamics -In Memory of Professor Seikan Ishigai, the Founder of the First Japan-U.S. Seminar on Two-Phase flow Dynamics-	Other	Co-author
42	International academic conference8	2012/6/23～2012,06,23,,,	Pseudo dynamic visualization of boiling two-phase flow under oscillatory flow condition	Other
43	Academic presentation7	2012/6/21～2012,06,21,,,	Quantitative Measurement of Void Fraction in a Forced Convective Flow Boiling by using Neutron Radiography	Other	Co-author
44	Academic presentation7	2012/6/21～2012,06,21,,,	Quantitative Evaluation of Void Wave Propagation in Oscillatory Flow by using Neutron Radiography	Other	Co-author
45	Papers1	2012/6/15～2012,06,15,,,	Critical Heat Flux in a Circumferentially Non-Uniformly Heated Tube (Influence of Inclined Angles under High flux conditions)	Academic Journal	Co-author	Japanese Journal of Multiphase Flow	Vol.25No.2 178-191
46	International academic conference8	2012/6/5～2012,06,05,,,	CHF in a circumferentially nonuniformly heated tube under low-pressure and low-mass-flux condition Influence of Inclined angles under high heat flux condition	Other	Co-author
47	Academic presentation7	2012/6/1～2012,06,01,,,	Heat transfer of particle convection in Fluidized-bed	Other	Co-author
48	Papers1	2012/4/25～2012,04,25,,,	Influence of a Flow Obstacle on Boiling Two-Phase Flow	Academic Journal	Co-author	Transactions of Japan Society of Mechanical Engineers Ser. B.
49	International academic conference8	2012/3/20～2012,03,20,,,	Dryout of Counter-Current Two-Phase Flow under Diabatic Condition	Other	Co-author	The Eighth KSME-JSME Thermal and Fluids Engineering Conference	GSF32-001
50	International academic conference8	2012/3/20～2012,03,20,,,	Heat and Flow Characteristics around a Nozzle in Fluidized-bed	Other	Co-author	The Eighth KSME-JSME Thermal and Fluids Engineering Conference	GSF32-009
51	Research report21	2012/1/6～2012,01,06,,,	Quantitiative Evaluation of Void Fraction on Boiling Two-phase Flow in a Tube by using Neutron Radiography	Other	Co-author
52	Research report21	2012/1/6～2012,01,06,,,	Quantitative Evaluation of Frosting Phenomena on Fin-tube Heat Exchanger	Other	Co-author
53	International academic conference8	2011/11/8～2011/11/112011,11,08,2011,11,11	Boiling heat transfer and flow characteristics of liquid nitrogen in helically coiled tube	Other		22nd International symposium on Transport Phenomena
54	International academic conference8	2011/11/8～2011/11/112011,11,08,2011,11,11	Oil-water mixture in horizontal mini-channel	Other		22nd International symposium on Transport Phenomena
55	Academic presentation7	2011/10/30～2011,10,30,,,	Critical Heat Flux in a Circumferentially Non-Uniformly Heated Tube under Low-Pressure and Low-Mass-Flux Condition(Influence of Inclined Angles under High Heat Flux Condition)	Other	Co-author
56	Academic presentation7	2011/10/30～2011,10,30,,,	Boiling Heat Transfer and Flow Characteristics in Helically Coiled Tube with Natural Circulation Loop	Other	Co-author
57	Academic presentation7	2011/10/30～2011,10,30,,,	Critical Heat Flux of Counter-Current Two-Phase Flow (Effect of Subcooled Liquid Film)	Other	Co-author
58	Academic presentation7	2011/10/29～2011,10,29,,,	Particle Convective Heat transfer in Fluidized Bed(Evaluation of Thermal Contact Resistance at the Wall)	Other	Co-author
59	Academic presentation7	2011/10/29～2011,10,29,,,	Oil-Water Mixture in Horizontal Mini-Channels	Other	Co-author
60	Research report21	2011/10/1～2011,10,01,,,	Quantitaive Measurement of Liquid-film Movement under Forced Convective Boiling Condition by using Neutron Radiography	In-house publication	Co-author	KURRI Progress Report 2010	115
61	Academic presentation7	2011/9/15～2011,09,15,,,	Characteristics of Frost Flormation on Fin-tube Heat Exchanger	Other	Co-author	2011 JSRAE Annual Conference	441-444
62	Papers1	2011/8～2011,08,00,,,	Flow Pattern and Boiling Heat Transfer of CO2 at High Pressure in Horizontal Mini-Channels	Academic Journal	Co-author	Int. Heat Transfer Conference	IHTC14-22560
63	International academic conference8	2011/7/27～2011,07,27,,,	Quantitatively Measurement of Void Fraction under Forced Convective Boiing Condition by using Neutron Radiography	Other	Co-author	ASME-JSME-KSME Fluids Engineering Conference2011
64	International academic conference8	2011/7/12～2011,07,12,,,	Influence of a Flow Obstacle on boiling Two-Phase Flow	Other	Co-author	Proceedings of the ASME 2011 Power Conference (POWER 2011) and the International Conference on Power Engineering 2011 (ICOPE-11)
65	International academic conference8	2011/3/14～2011,03,14,,,	Advanced Power Generation System and Related Thermal Engineering Problems	Other	Co-author	Proc. 8th ASME-JSME Thermal Engineering Joing Conf
66	Papers1	2011/3～2011,03,00,,,	CHF in a circumferentially nonuniformly heated tube under low-pressure and low-mass-flux condition	Academic Journal	Co-author	Heat Transfer -Asian Research	Vol.40 No.2 125-139
67	Papers1	2011/3～2011,03,00,,,	Critical Heat Flux in a Circumferentially Non-Uniformly Heated Tube under Low Pressure and Low Mass Flux Condition (Inclined upward flow)	Academic Journal	Co-author	Heat Transfer Asian Research
68	Papers1	2011/1～2011,01,00,,,	Forced Flow Boiling of Carbon Dioxide in Horizonta Mini-Channel	Academic Journal	Co-author	Int. J. Thermal Science	Vol.50 296-308
69	International academic conference8	2010/9/15～2010,09,15,,,	Flooding in a small diameter tube	Other	Co-author	Japan-UK mini-Seminar on Multiphase Flow 2010
70	International academic conference8	2010/9/14～2010,09,14,,,	Interaction between Consecutive Large Bubbles in a Vertical Slug Flow	Other	Co-author	Japan-UK mini-Seminar on Multiphase Flow 2010
71	International academic conference8	2010/6/4～2010,06,04,,,	CHF in a Non-Uniform Circumferential Heating Tube under Low-Pressure and Low-Mass-Flux Condition	Other	Co-author	7th International Conference on Multiphase Flow ICMF2010
72	Papers1	2010/6/1～2010,06,01,,,	Critical Heat Flux Induced by Flow Instability in Boiling Channels - A review	Academic Journal	Co-author	Nuclear Safety and Simulation	Vol.2 No.1 104-120
73	Papers1	2010/3/15～2010,03,15,,,	The Prediction of the Dryout under Flooding Condition in a Small Diameter Tube	Academic Journal	Co-author	Japanese Journal of Multiphase Flow	Vol.23 No.5
74	International academic conference8	2010/2/18～2010,02,18,,,	Heat Transfer and Flow Pattern of Boiling Flow CO2 in Mini-channels	Other	Co-author	2010 International Symposium on Next-Generatino Air Conditioning and Refrigeration Technology
75	Papers1	2010～2010,00,00,,,	Flow Boiling in Horizontal Mini-Channels: Flow Pattern of CO2 at High Pressure	Academic Journal	Co-author	Multiphase Science and Technology	Vol.22No.2 115-132
76	Papers1	2009～2009,00,00,,,	Flow Pattern and Boiling Heat Transfer of CO2 in Horizontal Small-Bore Tubes	Academic Journal	Co-author	International Journal of Multiphase Flow	Vol.35 699-709
77	Papers1	2009～2009,00,00,,,	Heat Transfer and Flow Characteristics around a Finned-Tube Bank Heat Exchanger in Fluidized-bed	Academic Journal	Co-author	Nuclear Instruments and Methods in Physics Research - A	Vol.605 188-191
78	Papers1	2009～2009,00,00,,,	Traveling void wave in horizontal two-phase flow	Academic Journal	Co-author	International Journal of Heat and Mass Transfer	Vol52 No.25-26 5682-5690
79	Papers1	2008～2008,00,00,,,	Void Distribution around a Distributor Nozzle of Fluidized Bed	Monograph	Co-author	Neutron Radiography 8	313-321
80	Papers1	2007/10/1～2007,10,01,,,	Investigation on Two-phase Flow Dynamics with Discrete Bubble Model	Academic Journal	Co-author	Thermal Science&Engineering	Vol.15 No.4 197-209
81	Papers1	2007～2007,00,00,,,	Pattern Dynamics Simulation of Void Wave Propagation	Academic Journal	Co-author	Multiphase Science and Technology	Vol.19 No.4
82	Papers1	2006/10/23～2006,10,23,,,	Application of CT-processing to Neutron Radiography Imaging of Fluidized-bed	Academic Journal	Co-author	Particle - Particle Systems Characterization	Vol.23 No.3-4, 272-278
83	Papers1	2006/1～2006,01,00,,,	Critical Heat Flux in Non-uniformly Heated Tube under Low-Pressure and Low-Mass-Flux Condition	Academic Journal	Co-author	Heat Transfer-Asian Research	Vol.35 No.1 47-60
84	Papers1	2006～2006,00,00,,,	Heat Transfer and Flow Characteristics of a Non-uniformly Heated Tube under Low Pressure and Low Mass Flux Condition	Academic Journal	Co-author	Multiphase Science and Technology	Vol.18 No.1 137-161
85	Papers1	2006～2006,00,00,,,	Parallel-channel instability in natural circulation system	Academic Journal	Co-author	Multiphase Science and Technology	Vol.18 No.1 55-83
86	Papers1	2005/10～2005,10,00,,,	Simplified Flow Instability Analysis of a Natural Circulation System with Parallel Boiing Channels	Academic Journal	Co-author	Thermal Science&Engineering	Vol.13 No.5
87	Papers1	2005/4/25～2005,04,25,,,	Quantitative measurement of segregation phenomena in a binary mixture fluidized bed by neutron radiography	Academic Journal	Co-author	Nuclear Instruments and Methods in Physics Research - A	Vol.542 Issues1-3, 219-225
88	Papers1	2005/4/25～2005,04,25,,,	Visualization of fluidized bed heat exchanger in upward/downward flow condition by neutron radiography	Academic Journal	Co-author	Nuclear Instruments and Methods in Physics Research - A	Vol.542 Issues1-3, 161-167
89	Papers1	2005/3/25～2005,03,25,,,	Critical Heat Flux in Non-uniformly Heated Tube under Low-Pressure and Low-Mass-Flux Condition	Academic Journal	Co-author	Transactions of Japan Society of Mechanical Engineers Ser. B.
90	Papers1	2005～2005,00,00,,,	Flow Visualization of Segregation Process in a Fluidized Bed by Neutron Radiography	Academic Journal	Co-author	IEEE Transactions on Nuclear Science	Vol.52 No.1
91	Papers1	2004～2004,00,00,,,	Quantitative Flow Visualization of Fluidized-Bed Heat Exchanger by Neutron Radiography	Academic Journal	Co-author	Applied Radiation and Isotopes	Vol.61No.4 pp.715-724
92	Papers1	2004～2004,00,00,,,	Characteristics of Bed-Material Behavior and Heat Transfer around Vertical Tube Banks in a Fluidized Bed	Academic Journal	Co-author	Thermal Science and Engineering	Vol.12 No.5 pp.9-19
93	Papers1	2003/12/1～2003,12,01,,,	Bubble Behavior in Vertical Tube Banks Installed in a Fluidized Bed	Academic Journal	Co-author	Heat Transfer Asian Research
94	International academic conference8	2003/4/24～2003/4/252003,04,24,2003,04,25	Restriction of Critical Heat Flux by Critical Flow Condition in Capillary Tube	Other	Co-author	ASME2003 1st Internatinal Conference on Microchannels and Minichannels	961-966
95	Papers1	2003～2003,00,00,,,	Flow Pattern and Void Fraction Fluctuation in Oscillatory Two-Phase Flow	Academic Journal	Co-author	Japanese Jouirnal of Multiphase FLow
96	Papers1	2002/12～2002,12,00,,,	Critical Heat Flux Condition Induced by Flow Instabilities in Boiling Channels	Academic Journal	Co-author	Chemical Engineering & Technology	Vol.25 No.12 1197-1201
97	Papers1	2002～2002,00,00,,,	Bubble Behavior in Vertical Tube Banks Installed in a Fluidized Bed	Academic Journal	Co-author	Transactions of Japan Society of Mechanical Engineers Ser. B.
98	Papers1	2002～2002,00,00,,,	Boiling Two-Phase Heat Transfer of LN2 Downward Flow in Pipe	Academic Journal	Co-author	Experimental Thermal and Fluid Science	Vol.26/6-7. 627-633
99	Papers1	2002～2002,00,00,,,	Bubble Behavior and Void Fraction Fluctuation in Vertical Tube Banks Immersed in a Gas-Solid Fluidized Bed Model	Academic Journal	Co-author	Experimental Thermal and Fluid Science	Vol.26/6-7, 643-652
100	Papers1	2001～2001,00,00,,,	Visualization of Bed-Material Movements around Bubble in a Fixed-bed by Neutron radiography	Academic Journal	Co-author	Nondestructive testing and Evaluation	Vol.16 391-402
101	Papers1	2001～2001,00,00,,,	Visualization of Large-Particle Movement in Fluidized-Bed by Neutron Radiography	Academic Journal	Co-author	Nondestructive testing and Evaluation	Vol.16 377-390
102	Papers1	2001～2001,00,00,,,	CHF in Oscillatory Flow Boiling Channels	Academic Journal	Co-author	IChemE Transactions Part A- Chemical Engineering Research and Design	Vol.79 No.4,389-401
103	Papers1	2000～2000,00,00,,,	Visualization of Bubble and Large Particle Movements in a Fluidized-Bed of Binary Mixture of Particles	Academic Journal	Co-author	Japanes Journal of Multiphase Flow
104	Papers1	2000～2000,00,00,,,	Quantitative Flow Visualization of Fluidized-Bed under normal and down-flow-mode operations by neutron radiography	Academic Journal	Co-author	Experiments in Fluids
105	Papers1	1999～1999,00,00,,,	Visualization of Bed Material Movement in a Simulated Fluidized-Bed Heat Exchanger by Neutron Radiography	Academic Journal	Co-author	Nuclear Instruments and Methods in Physics Research - A	Vol.424 No.1, 77-83
106	Papers1	1999～1999,00,00,,,	Scaling Parameter of CHF under Oscillatory Flow Conditions	Academic Journal	Co-author	Heat Transfer Asian Research	Vol.28 No.6, 541-550
107	Papers1	1998～1998,00,00,,,	Scaling Paramenter of CHF under Oscillatory Flow Condition	Academic Journal	Co-author	Transactions of Japan Society of Mechanical Engineers Ser. B.
108	Papers1	1998～1998,00,00,,,	Flow Pattern and Heat Transfer in Tube Banks of a Simulated Fluidized-Bed Heat Exchanger	Academic Journal	Co-author	JSME Int.
109	Papers1	1997/11～1997,11,00,,,	Dryout and Post-Dryout Heat Transfer in a Natural Circulation Loop of Liquid Nitrogen	Academic Journal	Co-author	Heat Transfer- Japanese Research	26-7, pp.449-458
110	Papers1	1997～1997,00,00,,,	3-D Temperature Measurement of Natural Convection by Image Processing Technique	Academic Journal	Co-author	Visualization Society of Japan	Vol.17 No.64 41-45
111	Papers1	1997～1997,00,00,,,	Large-Particle Movement and Drag Coefficient in a Fluidized Bed	Academic Journal	Co-author	Heat Transfer Japanese Research	Vol.26 No.1,54-67
112	Papers1	1996～1996,00,00,,,	Large Particle Movement and Drag Coefficient in a Fluidzed Bed	Academic Journal	Co-author	Transactions of Japan Society of Mechanical Engineers Ser. B.
113	Papers1	1996～1996,00,00,,,	Critical Heat Flox under Flow Oscillation in a Natural Circulation Loop of Liquid Nitrogen	Academic Journal	Co-author	Japanese Journal of Multiphase Flow
114	Papers1	1996～1996,00,00,,,	Void Fraction Profile in Tube-banks of a Simulated fluidized-bed Heat Exchanger	Academic Journal	Co-author	Nuclear Instruments and Methods in Physics Research - A	377-1, 144-147
115	Papers1	1995～1995,00,00,,,	Dryout in a Boiling Channel under Oscillatory Flow Condition	Academic Journal	Co-author	Trans.Jpn. Soc. Mech. Eng.
116	Papers1	1995～1995,00,00,,,	Dryout in a Boiling Channel under Oscillatory Flow Condition	Academic Journal	Co-author	JSME Int. J. B	39-2,412-418
117	Papers1	1995～1995,00,00,,,	CHF in a Boiling Channel under Oscillatory Flow Condition	Monograph	Co-author	Advances in Multiphase Flow 1995 Elsevier	497-506
118	Papers1	1993～1993,00,00,,,	Heat Transfer in a Fin-Tube Type Heat Exchanger with Multiple Inlet Ports. -Numerical Simulation and Thermal Flow Visualization under Cooling Condition-	Academic Journal	Co-author	Trans. of the JAR
119	Papers1	1993～1993,00,00,,,	Dryout under Oscillatory Flow Condition in Vertical and Horizontal Tubes	Academic Journal	Co-author	Int.J.Heat Mass Transf.	36-16, 4076-4078
120	Papers1	1992～1992,00,00,,,	Flow Pattern in a Fin-Tube Type Heat Exchanger with Multiple Inlet Ports - Numerical Simulation and Flow Visualization under Isothermal Condition	Academic Journal	Co-author	Tran. of the JAR.
121	Papers1	1991～1991,00,00,,,	Study on Heat and Mass Transfer under Frosting Condition-1st Report	Academic Journal	Co-author	Trans. of the JAR

Academic presentationOtherCo-author2023/8/24～札幌

Academic presentationOtherUMEKAWA,Hisashi2023/3/16～

Academic presentationOtherCo-authored2023/3/16～

PapersIn refereedAcademic JournalCo-authored2023/2/1～https://doi.org/10.1016/j.expthermflusci.2022.110799

Research reportOtherCo-authorUMEKAWA,Hisashi2023/1/5～

Research reportOtherCo-authored2023/1/5～

Research reportIn-house publicationCo-authoredUMEKAWA,Hisashi2023～

Research reportIn-house publicationCo-authored2023～

Academic presentationCo-authored2022/10/8～

Academic presentationOtherCo-authoredUMEKAWA,Hisashi2022/8/21～

Research reportIn-house publicationCo-authored2022～

Research reportIn-house publicationCo-authoredUMEKAWA,Hisashi2022～

Research reportIn-house publicationCo-authoredUMEKAWA,Hisashi2021/12/28～

Academic presentationOtherCo-authored2021/10/9～https://doi.org/10.1299/jsmeted.2021.0201

Research reportOtherInternational coauthorship2021/1/6～

Research reportIn-house publicationCo-authored2021～

BookMonographCo-authorUMEKAWA,Hisashi2021～https://doi.org/10.1016/C2018-0-04630-7

Research reportIn-house publicationCo-authored2020/8～

PapersIn refereedAcademic JournalCo-authored2020～https://doi.org/10.1299/transjsme.19-00359

Research report2019/12/25～

International academic conferenceOtherCo-author2019/11/4～

Academic presentationOther2019/6/20～

Research reportOtherSingle-Author2019/3/27～

PapersIn refereedAcademic JournalCo-authored2019～10.1615/MultScienTechn.2018029467

Research reportIn-house publicationCo-authored2019～

Research reportOther2018/12/27～

Edited bookUnrefereedOtherCo-author2018/10/30～

Academic presentationUnrefereedOtherCo-author2018/10/21～

Keynote addressUnrefereedOtherSingle-AuthorK081002018/9/10～

Academic presentationUnrefereedOtherCo-authorS08202052018/9/10～

LectureOtherSingle-AuthorC082002018/9/9～

Academic presentationUnrefereedOtherCo-authorB2142018/6/14～

Academic presentationUnrefereedOtherCo-authorB1242018/6/14～

International academic conferenceThe flow characteristics in a distillation column. Influence of clearance of packing and physical property of working fluidUnrefereedOtherCo-authorB11162018/3/12～2018/3/12Nagasaki, Japan

International academic conferenceClassification of Critical Heat Flux Mechanisms for Downward FlowUnrefereedOtherCo-authorB11282018/3/12～2018/3/12Nagasaki, Japan

PapersPrediction Model of Critical Heat Flux for Vertical Downward FlowIn refereedAcademic JournalCo-authorYoshiki Kawazoe;Takeyuki Ami;Hisashi Umekawa;Mamoru OzawaTransaction of the JSME84(859)2018/3～2018/3JapaneseDOI: 10.1299/transjsme.17-00380]

Research reportUnrefereedIn-house publicationCo-author2018～

LectureOtherCo-author2017/9/22～2017/9/22

Academic presentationUnrefereedOtherCo-authorMayuho Kitagawa;Takahiro Kubota;Takeyuki AMI;Hisashi UMEKAWAB3242017/8/19～2018/8/21Chyoufu JAPAN

Academic presentationPrediction Model of Critical Heat Flux for Vertical Downward FlowUnrefereedOtherCo-authorYoshiki Kawazoe;Takeyuki Ami;Hisashi Umekawa;Mamoru OzawaCritical Heat Flux;Downward Flow;Departure from Nucelate boiling;Subcooled BoilingB1232017/6～2017/6Toyohashi JAPANJapnaese

PapersFlow Characteristics of Counter-current Two-ohase Flow in Structured Packings -Influence of Clearance of Packings-In refereedAcademic JournalCo-authorTakehiro Kubota;Takeyuki Ami;Hisashi UmekawaCounter Current Two-phase Flow;Distilation column;Structured Packing;Flooding;X-ray radiographyJapanese Journal of Multiphas Flow 30(5)2017/3～2017/3Japnaesedoi.org/10.3811/jjmf.30.467

BookConvectice Boiling under Unstable Flow ConditionsUnrefereedMonographCo-authored chapterElsevier・Boiling -Reserch and Advances-297-3152017～2017English978-0-08-101010-5

Academic presentationUnrefereedOtherCo-author2016/9/12～2016/9/12

Academic presentationEstimation of the Water Behavior in Defrosting Process by Using Neutron RadiographyUnrefereedOtherCo-authorRyosuke Matsumoto;Tomoya Yoshimura;Hisashi Umekawa;Takeyuki Ami;Daisuke ITO(KURRI);Yasushi SaitoE224-12016/9/8～2016/9/8Kobe,JapanJapanese

Academic presentationFlow Characteristics of Counter-current Two-ohase Flow in Structured Packings -Influence of Clearance of Packings-UnrefereedOtherCo-authorTakahiro Kubota;Takeyuki Ami;Hisashi UmekawaP04-12016/8/8～2016/8/8Kyoto, JapanJapanese

PapersInvestigation of Water Behavior in Defrosting Process by Using Neutron RadiographyIn refereedAcademic JournalCo-authorRyosuke Matsumoto;Tomoya Yoshimura;Hisashi Umekawa;Takeyuki Ami;Daisuke ITO(KURRI);Yasushi Saito(KURRI)Trans. of the JSRAE 15-29_OA 2015/10/31～2015/10/31Japanesedoi.org/10.11322/tjsrae.15-29_OA

Academic presentationInfluence of Heating Length on Entrainment in a Boiling Two-Phase Flow -Indirect ealuation based on the liquid filmflow measurement-UnrefereedOtherCo-authorRyuga Nakano(D);Takeyuki Ami;Hisashi Umekawa;Mamoru Ozawa日本機械学会熱工学コンファレンス2015講演論文集B1422015/10/24～2015/10/24Osaka, JapanJapanese

Academic presentationCritical Heat Flux for Downward Flow in a Vertical Mini-Channel -The Case of 20mm in innner Diameter-UnrefereedOtherCo-authorTomoyuki Harada;Takeyuki Ami;Hisashi Umekawa;Mamoru Ozawa日本機械学会熱工学コンファレンス2015講演論文集B1432015/10/24～2015/10/24Osaka, JapanJapanese

Survey reportUnrefereedOtherSingle-Author2015/9/14～2015/9/14

PapersThe Influence of the Heating Condition on the Void Fraction of Boiling ChannelIn refereedAcademic JournalCo-authorHisashi UMEKAWA;Syota Nakamura(D);Syota Fujiyoshi(D);Takeyuki Ami;Mamoru OZAWA;Yasusi Saito(KURRI);Daiskue Ito(KURRI)Physics ProcediaVol.69, 599-6062015/9/10～2015/9/10English10.1016/j.phpro.2015.07.0851875-3892

Magazine articleAcademic JournalCo-authorNo.734,17-212015/6/1～2015/6/1Japanese

International academic conferenceDryout in a Natural Circulation Loop under Density Wave OscillationUnrefereedOtherCo-authorHisashi UMEKAWA;Takeyuki Ami;Mamoru OzawaJapan-U.S. Seminar on Two-Phase Flow Dynamics5.12015/5/10～2015/6/15English

Academic presentationOtherCo-authorM4152015/3/15～2015/3/15Japanese

Academic presentationOtherCo-authorM9072015/3/15～2015/3/15Japanese

Research reportUnrefereedIn-house publicationSingle-Author2015/2/20～2015/2/20Japanese

PapersInfluence of tube diameter on critical heat flux in downward flow,In refereedAcademic JournalCo-authorMultiphase Science and Technolog27(1)77-972015～2015English

Academic presentationOtherCo-authorSyota Eshioka;Takeyuki Ami;Hisashi Umekawa;Mamoru OzawaA2222014/11/8～2014/11/9Japanese

Academic presentationOtherCo-authorTakuya Kawai;Ikki Yumoto;Tateyuki Ami;Hisashi UMEKAWA;Mamoru OZAWAA2232014/11/8～2014/11/9Japanese

International academic conferenceThe Influence of the Heating Condition on the Void Fraction of Boiling ChannelOtherCo-authorHisashi UMEKAWA;Syota Nakamura(D);Syota Fujiyoshi(D);Takeyuki Ami;Mamoru OZAWA10th World Conference on Neutron Radiography1872014/10/5～2014/10/10Grindelwald CHEnglish

PapersDryout of Counter-Current Two-Phase Flow in a Vertical TubeAcademic JournalCo-authorTakeyuki Ami;HisashiUmekawa;Mamoru OzawaInternational Journal of Multiphase FlowVol.67 54-642014/9/16～2014/9/16Englishdoi:10.1016/j.ijmultiphaseflow.2014.09.002

International academic conferenceQuantitative estimation of frost formation on plate-fin tube Heat exchanger by neutron radiographyIn refereedOtherCo-authorRyosuke Matsumoto;Tomoya Yoshimura;Hisashi Umekawa;Takeyuki Ami;Disuke Ito(KURRI);Yasushi Saito(KURRI)Proceedings of the 15th International Heat Transfer ConferenceIHTC15-91442014/8/13～2014/8/13Kyoto, JapanEnglishDOI: 10.1615/IHTC15.hex.009144

International academic conferenceEffect of Flow Pattern on Critical Heat FluxIn refereedOtherCo-authorTakeyuki Ami;Goshi Yamashina(D);Hisashi Umekawa;Mamoru OzawaProceedings of the 15th International Heat Transfer ConferenceIHTC15-93762014/8/12～2014/8/12Kyoto, JapanEnglishDOI: 10.1615/IHTC15.tpf.009376

Academic presentationHeat transfer and flow characteristics of liquid nitrogen in natural circulation loop with parallel tubesOtherCo-authorIkki Yumoto;Takaho Takeuchi;Takuya Kawai;Ryuma Fujiwara;Takeyuki Ami;Hisashi Umekawa;Mamoru OzawaJSMF Symposium on Multiphase Flow 2014C1432014/7/28～2014/7/28Japanese

PapersIn refereedAcademic JournalCo-authorTrans. of the JSRAEVol.31 No.2 123-1262014/6/30～2014/6/30Japanesedoi.org/10.11322/tjsrae.31.207

Academic presentationType of Critical Heat Flux for Downward Flow in a vertical TubeOtherCo-authorTakayuki Harada;Syota Fujiyoshi;Takeyuki AMI;Hisashi UMEKAWA;Mamoru OZAWA;Yasushi Saito;Daiskue ItoThe 19th National Symposium on Power and Energy Systems(SPES 2014)No.14-11 167-1722014/6/26～2014/6/26Japanese

PapersInfluence of the Flow Pattern on Critical Heat FluxIn refereedAcademic JournalCo-authorGoshi Yamashina;Noriko Nakamura;Takeyuki AMI;Hisashi UMEKAWA;Mamoru OZAWAJapanese Journal of Multiphase FlowVol.27 No.52014/3/15～2014/3/15Japanese

Research reportEvaluation of Convective Boiling in Oscillatory FlowOtherCo-author2013/12/4～2013/12/4Japanese

PapersCHF in a Circumferentially Nonuniformly Heated Tube Under Low-Pressure and Low-Mass-Flux Condition (Influence of Inclined Angles Under High-Heat-Flux Condition)In refereedAcademic JournalCo-authorTakeyuki Ami;Takuya Hirose;Noriko Nakamura;Hisashi UMEKAWA;Mamoru OZAWAHeat Transfer Engineering Vol.35,No.5, pp.430-4392013/11/1～2013/11/1English10.1080/01457632.2013.832581

Research reportCharacteristics of the Void Fraction under aForced Convective Flow BoilingIn-house publicationCo-authorHisasshi Umekawa;Takeyuki Ami;Kazunari Sakakura(D);Syota NaKamura(D);Syota Fujiyoshi(D);Goshi Yamashina(D);Yasusi Saito(KURRI);Daisuke Ito(KURRI);Yuji Kawabata(KURRI)KURRI Progress Reoort2012PR4-42013/11/1～2013/11/1English

PapersCharacteristics of Trailing Bubble Velocity in Consecutive Large Bubbles Rising through a Inclined TubeIn refereedAcademic JournalCo-authorNoriko Nakamura;Yoshimune Hirose;Takeyuki AMI;Hisashi UMEKAWA;Mamoru OZAWAJapanese Journal of Multiphase FlowVol.27 No.3 306-3152013/9/15～2013/9/15JapaneseDOI :10.3811/jjmf.27.306

Academic presentationInfluence of the Flow Pattern on Critical Heat FluxUnrefereedOtherCo-authorGoshi Yamashina;Noriko Nakamura;Takeyuki Ami;Hisashi Umekawa;Mamoru OzawaJSMFE1342013/8/9～2013/8/9Nagano, JapanJapanese

Survey reportReport on the Great East Japan Earthquake Disaster Mechanical Enginnering VolumeMonographCo-authored chapterJoint Editional Committee for the Report on the Great East Japan Earthquake DisasterMaruzen2013/7/31～2013/7/31Japanese978-4-88898-232-0

Academic presentationEffect of Taylor Bubble Wake on the Trailing Bubble in a Inclined Upward FlowUnrefereedOtherCo-authorNoriko Nakamura;Yoshimune Hirose;Takeyuki AMI;Hisashi UMEKAWA;Mamoru OZAWAJSME323-3262013/6/13～2013/6/21Chiba, JapanJapanese

TextbookMonographCo-authored chapter2013/4～2013/4Japanese

Magazine articleFor the Discussion of the Nuclear PowerAcademic JournalSingle-AuthorHisashi UMEKAWAVol.52 No.219 p62013/4～2013/4Japanese

Academic presentationUnrefereedOtherCo-authorNo.12032013/3/16～2013/3/17Japanese

Academic presentationUnrefereedOtherCo-authorNo.2192013/3/16～2013/3/17Japanese

PapersPseudo dynamic visualization of boiling two-phase flow under oscillatory flow conditionIn refereedAcademic JournalCo-authorHisasshi Umekawa;Takeyuki Ami;Syota Fujiyoshi(D);Yashushi Saito(KURRI)ElsevierVol.43, pp.269-2762013/3～2013/3Englishdoi:10.1016/j.phpro.2013.03.031

Magazine articleJSMF25th Anniversary Discussion by the Recent Presidents -The Role of the Society, Past, Present and Future-UnrefereedAcademic JournalCo-authored chapterMasanori Aritomi;Masanori Naito;Manabu Iguchi;Akira Yabe;Kaichiro Mishima;Michio Sadatomi;Hiroshige Kikura;Hisashi UmekawaJapanese Journal of Multiphase FlowVol.26,No.4, pp.368-3852012/12/15～2012/12/15Japanese

Academic presentationInfluence of the Flow Pattern on Critical Heat FluxUnrefereedOtherCo-authorGoshi Yamashina;Takaho Takeuchi;Noriko Nakamura;Takeyuki Ami;Hisashi Umekawa;Mamoru OzawaProceedings of Thermal Engineering Conference '12111-1122012/11/17～2012/11/18KumamotoJapanese

Academic presentationUnrefereedOtherCo-author3232012/11/17～2012/11/18Japanese

Academic presentationVisualization of Frosting Phenomena by Using Neutron RadiographyCo-author2012/10/4～2012/10/5Japanese

Research reportQuantitative Evaluation of Void Wave Propagatino in Oscillatory Flow by Using Neutron RadiographyUnrefereedIn-house publicationCo-authorKURRI Progress Report 20111982012/10/1～2012/10/1English

International academic conferenceOil-water mixture in horizontal mini-channelOtherCo-author6th Japanese-European Two-Phase Flow Group Meeting2012/9/23～2012/9/27KumamotoEnglish

International academic conferenceQualitatively measurement of void fraction under oscillatory flow conditionOtherCo-author6th Japanese-European Two-Phase Flow Group Meeting2012/9/23～2012/9/27KumamotoEnglish

PapersFlow Characteristics of Oil-Water Mixture in Horizontal Mini-Channel (Influence of Inner Diameter and Geometry of Mixer)In refereedAcademic JournalCo-authorAMI Takeyuki;Kouhei Awata;Hisashi Umekawa;Mamoru OzawaJapanese Journal Multiphase Flow2012/9/15～Japanese

Academic presentationQuantitative Evaluation of Frosting Phenomena by Using Neutron RadiographyCo-author621-6242012/9/12～2012/9/14Japanese

Academic presentationFlow Characteristics of Oil-Water Mixture in Horizontal Mini-Channel (Influence of Inner Diameter)UnrefereedOtherCo-authorAMI Takeyuki;Kouhei Awata;Hisashi Umekawa;Mamoru OzawaJSMF Annual Meeting 2012364-3652012/8/11～KashiwaJapanese

Academic presentationInteractino between consecutive bubbles-Effect of tube inclination-UnrefereedOtherCo-authorYoshimune Hirose;Noriko Nakamura;Takeyuki AMI;Hisashi UMEKAWA;Mamoru OZAWAJSMF Annual Meeting 201290-912012/8/9～KashiwaJapanese

International academic conferencePattern Dynamics Approach to Two-Phase Flow Dynamics -In Memory of Professor Seikan Ishigai, the Founder of the First Japan-U.S. Seminar on Two-Phase flow Dynamics-OtherCo-author2012/7/8～English

International academic conferencePseudo dynamic visualization of boiling two-phase flow under oscillatory flow conditionOther2012/6/23～English

Academic presentationQuantitative Measurement of Void Fraction in a Forced Convective Flow Boiling by using Neutron RadiographyOtherCo-author2012/6/21～Japanese

Academic presentationQuantitative Evaluation of Void Wave Propagation in Oscillatory Flow by using Neutron RadiographyOtherCo-author2012/6/21～Japanese

PapersCritical Heat Flux in a Circumferentially Non-Uniformly Heated Tube (Influence of Inclined Angles under High flux conditions)In refereedAcademic JournalCo-authorJapanese Journal of Multiphase FlowVol.25No.2 178-1912012/6/15～Japanese

International academic conferenceCHF in a circumferentially nonuniformly heated tube under low-pressure and low-mass-flux condition Influence of Inclined angles under high heat flux conditionOtherCo-author2012/6/5～English

Academic presentationHeat transfer of particle convection in Fluidized-bedOtherCo-author2012/6/1～Japanese

PapersInfluence of a Flow Obstacle on Boiling Two-Phase FlowIn refereedAcademic JournalCo-authorTransactions of Japan Society of Mechanical Engineers Ser. B.2012/4/25～Japanese

International academic conferenceDryout of Counter-Current Two-Phase Flow under Diabatic ConditionOtherCo-authorThe Eighth KSME-JSME Thermal and Fluids Engineering ConferenceGSF32-0012012/3/20～Incheon, KoreaEnglish

International academic conferenceHeat and Flow Characteristics around a Nozzle in Fluidized-bedOtherCo-authorThe Eighth KSME-JSME Thermal and Fluids Engineering ConferenceGSF32-0092012/3/20～Incheon, KoreaEnglish

Research reportQuantitiative Evaluation of Void Fraction on Boiling Two-phase Flow in a Tube by using Neutron RadiographyOtherCo-author2012/1/6～Osaka, JapanJapanese

Research reportQuantitative Evaluation of Frosting Phenomena on Fin-tube Heat ExchangerOtherCo-author2012/1/6～Osaka, JapanJapanese

International academic conferenceBoiling heat transfer and flow characteristics of liquid nitrogen in helically coiled tubeOther22nd International symposium on Transport Phenomena2011/11/8～2011/11/11DelftEnglish

International academic conferenceOil-water mixture in horizontal mini-channelOther22nd International symposium on Transport Phenomena2011/11/8～2011/11/11DelftEnglish

TextbookMonographCo-authored chapterMamoru Ozawa;HisashiUmekawa;Ryousuke Matsumoto;Takeyuki Ami2011/11/1～Japanese

Academic presentationCritical Heat Flux in a Circumferentially Non-Uniformly Heated Tube under Low-Pressure and Low-Mass-Flux Condition(Influence of Inclined Angles under High Heat Flux Condition)OtherCo-authorTakuya Hirose;Kyohei Kajisako;Kazunari Sakakura;Takeyuki Ami;Hisashi Umekawa;Mamoru Ozawa2011/10/30～Hamamatsu, JapanJapaneseCritical Heat Flux (CHF) in a non-uniformly heated tube under inclined upward flow conditions is very important factor in designing actual boiling systems. However, only a few investigations on the CHF have been conducted under these conditions. Consequently, in the series of investigations, the experimental study on the CHF of non-uniformly heated tube was conducted with 900 mm and 1800 mm in heated length under the inclined condition. In this study, the CHF experiment was conducted with 450 mm in heated length under several inclination angles, i.e. 15, 30, 45 and 90 degree. The characteristic of CHF is decided by the relation between the gravity and the liquid film lift up, and these effects have been able to be categorized by using the modified Froude number well.

Academic presentationBoiling Heat Transfer and Flow Characteristics in Helically Coiled Tube with Natural Circulation LoopOtherCo-authorTakayuki TSURUNO;Yoshihiro IMAKURA;Takeyuki AMI;Hisashi UMEKAWA;Mamoru OZAWA2011/10/30～Hamamatsu, JapanJapaneseThere is still not enough knowledge of thermal-fluid characteristics in helically coiled tube under flow instability condition. In this investigation, experiment was conducted by using a natural circulation loop with liquid nitrogen as working fluid. The test section was helically coiled tube and had 4 mm in inner tube diameter, 100 mm in coil diameter and 3150 mm in heated length. The experimental condition was inlet throttle valve Kin = 540, 1076, 2065, and system pressure pex = 0.3, 0.5 MPa. As an experimental result, a inlet flow rate, boiling heat transfer and critical heat flux had been evaluated including post-dryout condition.

Academic presentationCritical Heat Flux of Counter-Current Two-Phase Flow (Effect of Subcooled Liquid Film)OtherCo-authorAyaka Fujiwara;Takuya Suzuki;Takeyuki Ami;Hisashi Umekawa;Mamoru Ozawa2011/10/30～Hamamatsu, JapanJapaneseDryout of counter-current two-phase flow is widely observed in the actual chemical and/or industrial systems. In case of the diabatic counter-current two-phase flow, the upward gas increases with the liquid film evaporation along the heating tube and flooding strongly affects the dryout of counter-current two-phase flow. In this investigation, the dryout experiment was conducted with the counter-current two-phase flow consisted of the free falling liquid film and upward gas flow. The obtained dryout characteristics were strongly influenced on the degree of inlet subcoooling, and are classified into three groups on the basis on the dryout mechanism.

Academic presentationParticle Convective Heat transfer in Fluidized Bed(Evaluation of Thermal Contact Resistance at the Wall)OtherCo-authorYusuke Tomioka;Takeyuki Ami,;Hisashi Umekawa;Mamoru Ozawa2011/10/29～Hamamatsu, JapanJapaneseTo understand the heat transfer characteristics in fluidized bed, the particle convection becomes the most important factor in the bed. In this investigation, the heat transfer experiment under a forced particle convection was conducted by using the cylinder-shaped fluidized with stirrer, and we measured a temperature in the bed. In this experiment, several sizes of particles (dp=0.2mm, 0.4mm, 1.0mm) were used. As a result, there was a sharp temperature drop in the first layer from the heating surface. And the experimental results were estimated by using a simple heat transfer model with effective thermal conductivity, particle-gas heat transfer coefficient and thermal contact resistance.

Academic presentationOil-Water Mixture in Horizontal Mini-ChannelsOtherCo-authorKohei Awata;Takeyuki Ami;Hisashi Umekawa;Mamoru Ozawa2011/10/29～Hamamatsu, JapanJapaneseIn this research, flow pattern and pressure drop characteristics of kerosene-water two phase flow in horizontal mini-channel was investigated. The tube diameter was 0.53 mm, and it was made from pyrex glass. The volumetric fluxes of each liquids were set between 0.05 and 0.6 m/s. The several flow patterns were observed in mini-channel, i.e. Droplet flow, Slug flow, Slug-Annular flow, Annular flow, Parallel flow and Kerosene slug flow. The transition of flow pattern has been explained by using Weber number of each phase. The pressure drop has shown a good agreement with Lockhart-Martinelli correlation, moreover the adaptability of the moving film model to the estimation of pressure in the slug flow regime has been confirmed.

LectureOtherSingle-Author2011/10/15～Japanese

Open classOtherSingle-Author2011/10/7～Japanese

Research reportQuantitaive Measurement of Liquid-film Movement under Forced Convective Boiling Condition by using Neutron RadiographyIn-house publicationCo-authorKURRI Progress Report 20101152011/10/1～English

Academic presentationOtherCo-author2011/9/15～

Academic presentationCharacteristics of Frost Flormation on Fin-tube Heat ExchangerOtherCo-authorHiroki Ryuoku;Ryouske Matsumoto;Tomoya Yoshimura;Hisashi UMEKAWA;Takeyuki Ami2011 JSRAE Annual Conference441-4442011/9/15～Tokyo, Japan

PapersFlow Pattern and Boiling Heat Transfer of CO2 at High Pressure in Horizontal Mini-ChannelsIn refereedAcademic JournalCo-authorAMI Takeyuki;NAKAMURA Noriko(D);UMEKAWA Hisashi;OZAWA Mamoru;SHOJI Masaharu(Kanagawa Univ.)Int. Heat Transfer ConferenceIHTC14-225602011/8～

International academic conferenceQuantitatively Measurement of Void Fraction under Forced Convective Boiing Condition by using Neutron RadiographyOtherCo-authorUMEKAWA Hisashi;TANIGUCHI Hitoshi;NAKAMURA Syota;AMI Takeyuki;SAITO YasushiASME-JSME-KSME Fluids Engineering Conference20112011/7/27～

International academic conferenceInfluence of a Flow Obstacle on boiling Two-Phase FlowOtherCo-authorAMI Takeyuki;UMEKAWA Hisashi;OZAWA MamoruProceedings of the ASME 2011 Power Conference (POWER 2011) and the International Conference on Power Engineering 2011 (ICOPE-11)2011/7/12～

Academic presentationOtherCo-author2011/6/4～

PapersIn refereedAcademic JournalCo-authorTransactions of Japan Society of Mechanical Engineers Ser. B.Vol.77 No.778 1385-13962011/6/1～

LectureOtherSingle-Author2011/5/31～

PapersIn refereedAcademic JournalCo-authorTransactions of Japan Society of Mechanical Engineers Ser. B.2011/4/1～

PapersIn refereedAcademic JournalCo-authorJapanese Journal of Multiphase FlowVol.24 No.52011/3/15～

International academic conferenceAdvanced Power Generation System and Related Thermal Engineering ProblemsOtherCo-authorOZAWA Mamoru;MATSUMOTO Ryousuke;UMEKAWA HisashiProc. 8th ASME-JSME Thermal Engineering Joing Conf2011/3/14～

Academic presentationOtherCo-author2011/3/1～

PapersCHF in a circumferentially nonuniformly heated tube under low-pressure and low-mass-flux conditionIn refereedAcademic JournalCo-authorAMI Takeyuki;UMEKAWA Hisashi;OZAWA Mamoru;MISHIMA Kaichiro;SAITO YasushiHeat Transfer -Asian ResearchVol.40 No.2 125-1392011/3～

PapersCritical Heat Flux in a Circumferentially Non-Uniformly Heated Tube under Low Pressure and Low Mass Flux Condition (Inclined upward flow)Academic JournalCo-authorAMI Takeyuki;UMEKAWA Hisashi;OZAWA Mamoru;MISHIMA Kaichiro;SAITO YasushiCritical heat flux;Non-uniform heat flux;re-distribution of liquid film;entrainmentHeat Transfer Asian Research2011/3～EnglishCritical Heat Flux (CHF) in a non-uniformly heated tube is a very important design factor of actual boiling equipment. In this series of studies, the CHF in a non-uniformly heated tube has been evaluated by considering the re-distribution of a liquid film caused by the wave interaction. In the present investigation, in order to estimate the influence of the magnitude of the heat flux, the CHF experiment was conducted. The experimental apparatus was the same as the forced convective boiling system presented in the previous paper, i.e. the eccentric tube with 20 mm I.D., 24 mm O.D., but heated length was just only 450 mm to keep the high heat flux condition. The experimental result indicated the influence of the magnitude of the heat flux as the entrainment increased. In this investigation, two kinds of the CHF mechanisms were observed, i.e. liquid film dryout at the high quality condition and departure from nucleate boiling (DNB) at the low quality condition, respectively. This obtained CHF has been evaluated by using the film flow model, and the empirical correlation of the spreading coefficient of liquid film re-distribution was proposed.

Academic presentationOtherCo-author2011/1/17～

PapersForced Flow Boiling of Carbon Dioxide in Horizonta Mini-ChannelIn refereedAcademic JournalCo-authorOZAWA Mamoru;AMI Takeyuki;UMEKAWA Hisashi;MATSUMOTO Ryosuke;HARA TakashiInt. J. Thermal ScienceVol.50 296-3082011/1～

Academic presentationOtherCo-author2010/10/31～

Academic presentationOtherCo-author2010/10/30～

International academic conferenceFlooding in a small diameter tubeOtherCo-authorAMI Takeyuki;NISHIMOTO Takaaki;UMEKAWA Hisashi;OZAWA MamoruJapan-UK mini-Seminar on Multiphase Flow 20102010/9/15～

International academic conferenceInteraction between Consecutive Large Bubbles in a Vertical Slug FlowOtherCo-authorNAKAMURA Noriko;AMI Takeyuki;UMEKAWA Hisashi;OZAWA MamoruJapan-UK mini-Seminar on Multiphase Flow 20102010/9/14～

Academic presentationOtherCo-author2010/7/19～

Academic presentationOtherCo-author2010/7/17～

Academic presentationOtherCo-author2010/6/22～

Academic presentationOtherCo-author2010/6/21～

International academic conferenceCHF in a Non-Uniform Circumferential Heating Tube under Low-Pressure and Low-Mass-Flux ConditionOtherCo-authorUMEKAWA Hisashi;HOTTA Kazunari;AMI Takeyuki;OZAWA Mamoru;MISHIMA Kaichiro;SAITO Yasushi7th International Conference on Multiphase Flow ICMF20102010/6/4～

PapersCritical Heat Flux Induced by Flow Instability in Boiling Channels - A reviewIn refereedAcademic JournalCo-authorOZAWA Mamoru;UMEKAWA Hisashi;MATSUMOTO Ryosuke;AMI TakeyukiNuclear Safety and SimulationVol.2 No.1 104-1202010/6/1～

Academic presentationOtherCo-author2010/5/27～

Academic presentationOtherCo-author2010/3/17～

PapersThe Prediction of the Dryout under Flooding Condition in a Small Diameter TubeIn refereedAcademic JournalCo-authorNISHIMOTO Takaaki;AMI Takyuki;UMEKAWA Hisashi;OZAWA MamoruJapanese Journal of Multiphase FlowVol.23 No.52010/3/15～

International academic conferenceHeat Transfer and Flow Pattern of Boiling Flow CO2 in Mini-channelsOtherCo-authorHARA Takashi;AMI Takeyuki;UMEKAWA Hisashi;MATUSMOTO Ryosuke;OZAWA Mamoru;ISHIHARA Isao2010 International Symposium on Next-Generatino Air Conditioning and Refrigeration Technology2010/2/18～

PapersFlow Boiling in Horizontal Mini-Channels: Flow Pattern of CO2 at High PressureIn refereedAcademic JournalCo-authorOZAWA Mamoru;UMEKAWA Hisashi;AMI Takeyuki;MATSUMOTO Ryosuke;HARA TakashiMultiphase Science and TechnologyVol.22No.2 115-1322010～

PapersFlow Pattern and Boiling Heat Transfer of CO2 in Horizontal Small-Bore TubesIn refereedAcademic JournalCo-authorOZAWA Mamoru;AMI Takeyuki;ISHIHARA Isao;UMEKAWA Hisashi;MATSUMOTO Ryosuke;TANAKA Yasuhiko;YAMAMOTO Taku;UEDA YuyaInternational Journal of Multiphase FlowVol.35 699-7092009～

PapersHeat Transfer and Flow Characteristics around a Finned-Tube Bank Heat Exchanger in Fluidized-bedIn refereedAcademic JournalCo-authorHONDA Ryosuke;UMEKAWA Hisashi;OZAWA MamoruNuclear Instruments and Methods in Physics Research - AVol.605 188-1912009～

PapersTraveling void wave in horizontal two-phase flowIn refereedAcademic JournalCo-authorAMI Takeyuki;UMEKAWA Hisashi;OZAWA Mamoru;SHOJI MasahiroInternational Journal of Heat and Mass TransferVol52 No.25-26 5682-56902009～

PapersIn refereedAcademic JournalCo-authorAMI Takeyuki;UMEKAWA Hisashi;OZAWA Mamoru;MISHIMA Kaichiro;SAITO YashushiTransactions of Japan Society of Mechanical Engineers Ser. B.2009～

PapersIn refereedAcademic JournalCo-authorAMI Takeyuki;UMEKAWA Hisashi;OZAWA Mamoru;MISHIMA Kaichiro;SAITO YasushiTransactions of Japan Society of Mechanical Engineers Ser. B.2009～

PapersIn refereedAcademic JournalCo-authorAMI Takeyuki;UMEKAWA HIsashi;OZAWA Mamoru;MISHIMA Kaixhiro;SAITO YasushiJapanese Journal of Multiphase Flow2008/12～

TextbookMonographCo-authored chapterNobuyuki Takenaka;Mamoru Ozawa;Hisashi Umekawa;Hitoshi Asano;Ryousuke Matsumoto2008/11/17～Japanese

PapersVoid Distribution around a Distributor Nozzle of Fluidized BedIn refereedMonographCo-authorUMEKAWA Hisashi;HOSHIKAWA Yusuke;TSUJI YOUHEI;FURUI SHUJI;OZAWA Mamoru;TAKENAKA NobuyukiNeutron Radiography 8313-3212008～

PapersInvestigation on Two-phase Flow Dynamics with Discrete Bubble ModelIn refereedAcademic JournalCo-authorThermal Science&EngineeringVol.15 No.4 197-2092007/10/1～Kansai University Research Grants 2005-2006

PapersPattern Dynamics Simulation of Void Wave PropagationIn refereedAcademic JournalCo-authorM.Ozawa;H.Umekawa;T.Ami;M.Shoji(Kanagawa Univ.)Multiphase Science and TechnologyVol.19 No.42007～

PapersApplication of CT-processing to Neutron Radiography Imaging of Fluidized-bedIn refereedAcademic JournalCo-authorUMEKAWA Hisashi;S.Furui;M.Ozawa;N.TakenakaParticle - Particle Systems CharacterizationVol.23 No.3-4, 272-2782006/10/23～

PapersCritical Heat Flux in Non-uniformly Heated Tube under Low-Pressure and Low-Mass-Flux ConditionIn refereedAcademic JournalCo-authorUMEKAWA Hisashi;KITAJIMA Tesuo;HIRAYAMA Mio;OZAWA Mamoru;MISHIMA Kaichiro;SAITO YasushiHeat Transfer-Asian ResearchVol.35 No.1 47-602006/1～Kansai University Research Grants

PapersHeat Transfer and Flow Characteristics of a Non-uniformly Heated Tube under Low Pressure and Low Mass Flux ConditionIn refereedAcademic JournalCo-authorH.Umekawa;M.Hirayama;T.Kitajima;M.Ozawa;K.Mishima;Y.SaitoMultiphase Science and TechnologyVol.18 No.1 137-1612006～

PapersParallel-channel instability in natural circulation systemIn refereedAcademic JournalCo-authorM.Hirayama;H.Umekawa;M.OzawaMultiphase Science and TechnologyVol.18 No.1 55-832006～

PapersSimplified Flow Instability Analysis of a Natural Circulation System with Parallel Boiing ChannelsIn refereedAcademic JournalCo-authorM.Hirayama;H.Umekawa;M.OzawaThermal Science&EngineeringVol.13 No.52005/10～

PapersQuantitative measurement of segregation phenomena in a binary mixture fluidized bed by neutron radiographyIn refereedAcademic JournalCo-authorH.Umekawa;S.Furui;Y.Oshima;M.Okura;M.Ozawa;N.TakenakaNuclear Instruments and Methods in Physics Research - AVol.542 Issues1-3, 219-2252005/4/25～

PapersVisualization of fluidized bed heat exchanger in upward/downward flow condition by neutron radiographyIn refereedAcademic JournalCo-authorS.Furui;H.Umekawa;M.Tsuzuki;M.OKURA;M.Ozawa;N.TakenakaNuclear Instruments and Methods in Physics Research - AVol.542 Issues1-3, 161-1672005/4/25～

PapersCritical Heat Flux in Non-uniformly Heated Tube under Low-Pressure and Low-Mass-Flux ConditionIn refereedAcademic JournalCo-authorTransactions of Japan Society of Mechanical Engineers Ser. B.2005/3/25～Kansai University Research Grants

PapersFlow Visualization of Segregation Process in a Fluidized Bed by Neutron RadiographyIn refereedAcademic JournalCo-authorShuji Furui;H.Umekawa;K.Hayashi;M.Ozawa;N.TakenakaIEEE Transactions on Nuclear ScienceVol.52 No.12005～

PapersQuantitative Flow Visualization of Fluidized-Bed Heat Exchanger by Neutron RadiographyIn refereedAcademic JournalCo-authorOZAWA Mamoru;UMEKAWA Hisashi;FURUI Shuji;HAYASHI Kouichi;TAKENAKA NobuyukiApplied Radiation and IsotopesVol.61No.4 pp.715-7242004～

PapersCharacteristics of Bed-Material Behavior and Heat Transfer around Vertical Tube Banks in a Fluidized BedIn refereedAcademic JournalCo-authorFURUI Shuji;UMEKAWA Hisashi;TSUZUKI Masakazu;OZAWA Mamoru;TAKENAKA NobuyukiThermal Science and EngineeringVol.12 No.5 pp.9-192004～

PapersIn refereedAcademic JournalCo-author2004～

PapersBubble Behavior in Vertical Tube Banks Installed in a Fluidized BedIn refereedAcademic JournalCo-authorUMEKAWA Hisashi;FURUI Shuji;UMEKAWA Hisashi;HAYASHI Kouichi;OZAWA Mamoru;TAKENAKA NobuyukiHeat Transfer Asian Research2003/12/1～Grant-in-Aid for Scientific Research

International academic conferenceRestriction of Critical Heat Flux by Critical Flow Condition in Capillary TubeUnrefereedOtherCo-authorHisashi UMEKAWA;Mamoru Ozawa;Takeshi SanamiASME2003 1st Internatinal Conference on Microchannels and Minichannels961-9662003/4/24～2003/4/25RochesterEnglishdoi;10.1115/ICMM2003-10730-7918-3667-3

PapersFlow Pattern and Void Fraction Fluctuation in Oscillatory Two-Phase FlowIn refereedAcademic JournalCo-authorJapanese Jouirnal of Multiphase FLow2003～

PapersCritical Heat Flux Condition Induced by Flow Instabilities in Boiling ChannelsIn refereedAcademic JournalCo-authorM.Ozawa;M.Hirayama;H.UmekawaChemical Engineering & TechnologyVol.25 No.12 1197-12012002/12～

PapersBubble Behavior in Vertical Tube Banks Installed in a Fluidized BedIn refereedAcademic JournalCo-authorTransactions of Japan Society of Mechanical Engineers Ser. B.2002～

PapersBoiling Two-Phase Heat Transfer of LN2 Downward Flow in PipeIn refereedAcademic JournalCo-authorUMEKAWA Hisashi;UMEKAWA Hisashi;OZAWA Mamoru;YANO ToshiakiExperimental Thermal and Fluid ScienceVol.26/6-7. 627-6332002～

PapersBubble Behavior and Void Fraction Fluctuation in Vertical Tube Banks Immersed in a Gas-Solid Fluidized Bed ModelIn refereedAcademic JournalCo-authorUMEKAWA Hisashi;OZAWA Mamoru;UMEKAWA Hisashi;FURUI Shuji;HAYASHI KoucichiExperimental Thermal and Fluid ScienceVol.26/6-7, 643-6522002～

PapersVisualization of Bed-Material Movements around Bubble in a Fixed-bed by Neutron radiographyIn refereedAcademic JournalCo-authorONODERA Toshikazu;UMEKAWA Hisashi;OZAWA Mamoru;OKURA Yukio;TAKENAKA Nobuyuki;MATSUBAYASHI MasatoNondestructive testing and EvaluationVol.16 391-4022001～

PapersVisualization of Large-Particle Movement in Fluidized-Bed by Neutron RadiographyIn refereedAcademic JournalCo-authorUMEKAWA Hisashi;OZAWA Mamoru;ONODERA Toshikazu;OKURA Yukio;TAKENAKA Nobuyuki;MATSUBAYASHI MasatoNondestructive testing and EvaluationVol.16 377-3902001～

PapersCHF in Oscillatory Flow Boiling ChannelsIn refereedAcademic JournalCo-authorOZAWA Mamoru;UMEKAWA Hisashi;MISHIMA Kaichiro;HIBIKI Takashi;SAITO YasushiIChemE Transactions Part A- Chemical Engineering Research and DesignVol.79 No.4,389-4012001～

PapersIn refereedAcademic JournalCo-authorVol.20 No.1 343-3462000/8/1～

PapersVisualization of Bubble and Large Particle Movements in a Fluidized-Bed of Binary Mixture of ParticlesIn refereedAcademic JournalCo-authorJapanes Journal of Multiphase Flow2000～

PapersQuantitative Flow Visualization of Fluidized-Bed under normal and down-flow-mode operations by neutron radiographyIn refereedAcademic JournalCo-authorOZAWA Mamoru;UMEKAWA Hisashi;TAKENAKA Nobuyuki;MATSUBAYASHI MasatoExperiments in Fluids2000～

PapersVisualization of Bed Material Movement in a Simulated Fluidized-Bed Heat Exchanger by Neutron RadiographyIn refereedAcademic JournalCo-authorUMEKAWA Hisashi;OZAWA Mamoru;TAKENAKA Nobuyuki;MATSUBAYASHI MasatoNuclear Instruments and Methods in Physics Research - AVol.424 No.1, 77-831999～

PapersScaling Parameter of CHF under Oscillatory Flow ConditionsIn refereedAcademic JournalCo-authorUMEKAWA Hisashi;OZAWA Mamoru;MITSUNAGA Tamotsu;MISHIMA Kaichiro;HIBIKI Takashi;SAITO YasushiHeat Transfer Asian ResearchVol.28 No.6, 541-5501999～

PapersScaling Paramenter of CHF under Oscillatory Flow ConditionIn refereedAcademic JournalCo-authorTransactions of Japan Society of Mechanical Engineers Ser. B.1998～

PapersFlow Pattern and Heat Transfer in Tube Banks of a Simulated Fluidized-Bed Heat ExchangerIn refereedAcademic JournalCo-authorOZAWA Mamoru;UMEKAWA Hisashi;MATSUDA Takeshi;TAKENAKA Nobuyuki;MATSUBAYASHI MasatoJSME Int.1998～

PapersDryout and Post-Dryout Heat Transfer in a Natural Circulation Loop of Liquid NitrogenIn refereedAcademic JournalCo-authorUMEKAWA Hisashi;OZAWA Mamoru;ISHIDA NaokiHeat Transfer- Japanese Research26-7, pp.449-4581997/11～

Papers3-D Temperature Measurement of Natural Convection by Image Processing TechniqueIn refereedAcademic JournalCo-author;;;UMEKAWA HisashiVisualization Society of JapanVol.17 No.64 41-451997～

PapersLarge-Particle Movement and Drag Coefficient in a Fluidized BedIn refereedAcademic JournalCo-authorOZAWA Mamoru;UMEKAWA Hisashi;MATSUDA Takeshi;TAKENAKA Nobuyuki;MATUBAYASHI Masato;TSURUNO AkiraHeat Transfer Japanese ResearchVol.26 No.1,54-671997～

PapersLarge Particle Movement and Drag Coefficient in a Fluidzed BedIn refereedAcademic JournalCo-authorTransactions of Japan Society of Mechanical Engineers Ser. B.1996～

PapersCritical Heat Flox under Flow Oscillation in a Natural Circulation Loop of Liquid NitrogenIn refereedAcademic JournalCo-authorJapanese Journal of Multiphase Flow1996～

PapersVoid Fraction Profile in Tube-banks of a Simulated fluidized-bed Heat ExchangerIn refereedAcademic JournalCo-authorOZAWA Mamoru;UMEKAWA Hisashi;MATSUDA Takeshi;TAKENAKA Nobuyuki;TSURUNO Akira;MATSUBAYASHI MasatoNuclear Instruments and Methods in Physics Research - A377-1, 144-1471996～

PapersDryout in a Boiling Channel under Oscillatory Flow ConditionIn refereedAcademic JournalCo-authorTrans.Jpn. Soc. Mech. Eng.1995～

PapersDryout in a Boiling Channel under Oscillatory Flow ConditionIn refereedAcademic JournalCo-authorUMEKAWA Hisashi;OZAWA Mamoru;MIYAZAKI Akira;MISHIMA Kaichiro;HIBIKI TakashiJSME Int. J. B39-2,412-4181995～

PapersCHF in a Boiling Channel under Oscillatory Flow ConditionIn refereedMonographCo-authorUMEKAWA Hisashi;OZAWA Mamoru;MIYAZAKI AkiraAdvances in Multiphase Flow 1995 Elsevier497-5061995～

PapersHeat Transfer in a Fin-Tube Type Heat Exchanger with Multiple Inlet Ports. -Numerical Simulation and Thermal Flow Visualization under Cooling Condition-In refereedAcademic JournalCo-authorTrans. of the JAR1993～

PapersDryout under Oscillatory Flow Condition in Vertical and Horizontal TubesIn refereedAcademic JournalCo-authorOZAWA Mamoru;UMEKAWA Hisashi;YOSHIOKA Yohji;TOMIYAMA AkioInt.J.Heat Mass Transf.36-16, 4076-40781993～

PapersFlow Pattern in a Fin-Tube Type Heat Exchanger with Multiple Inlet Ports - Numerical Simulation and Flow Visualization under Isothermal ConditionIn refereedAcademic JournalCo-authorTran. of the JAR.1992～

PapersStudy on Heat and Mass Transfer under Frosting Condition-1st ReportIn refereedAcademic JournalCo-author;UMEKAWA HisashiTrans. of the JAR1991～

UMEKAWA, Hisashi

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