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Journal Articles

Heat transfer characteristics of downward saturated boiling flow in vertical round pipes

Wada, Yuki; Shibamoto, Yasuteru; Hibiki, Takashi*

International Journal of Heat and Mass Transfer, 239, p.126598_1 - 126598_18, 2025/04

 Times Cited Count:0

Journal Articles

Two-group drift-flux model for upward cap-bubbly two-phase flows in large square channels

Sun, Haomin; Hibiki, Takashi*

International Journal of Heat and Mass Transfer, 237, p.126445_1 - 126445_14, 2025/02

 Times Cited Count:0 Percentile:0.00(Thermodynamics)

Journal Articles

Reynolds-averaged Navier-Stokes simulations of opposing flow turbulent mixed convection heat transfer in a vertical tube

Motegi, Kosuke; Shibamoto, Yasuteru; Hibiki, Takashi*

International Journal of Heat and Mass Transfer, 237, p.126406_1 - 126406_15, 2025/02

 Times Cited Count:0

Journal Articles

Prediction of interfacial shear stress and pressure drop in vertical two-phase annular flow

Zhang, H.*; Umehara, Yutaro*; Yoshida, Hiroyuki; Mori, Shoji*

International Journal of Heat and Mass Transfer, 218, p.124750_1 - 124750_11, 2024/01

 Times Cited Count:4 Percentile:51.36(Thermodynamics)

Journal Articles

Corrigendum to "Visualization of the working fluid in a flat-plate pulsating heat pipe by neutron radiography" [International Journal of Heat and Mass Transfer 185 (2022) 122336]

Yasuda, Yosuke*; Matsumoto, Yoshihiro*; Shinohara, Takenao; Nabeshima, Fumika*; Horiuchi, Keisuke*; Nagai, Hiroki*

International Journal of Heat and Mass Transfer, 213, p.124291_1 - 124291_2, 2023/10

 Times Cited Count:0 Percentile:0.00(Thermodynamics)

Journal Articles

Multi-dimensional characteristics of upward bubbly flows in a vertical large-size square channel

Sun, Haomin; Kunugi, Tomoaki*; Yokomine, Takehiko*; Shen, X.*; Hibiki, Takashi*

International Journal of Heat and Mass Transfer, 211, p.124214_1 - 124214_17, 2023/09

 Times Cited Count:3 Percentile:51.36(Thermodynamics)

Journal Articles

On the velocity and frequency of disturbance waves in vertical annular flow with different surface tension and gas-liquid density ratio

Zhang, H.*; Umehara, Yutaro*; Yoshida, Hiroyuki; Mori, Shoji*

International Journal of Heat and Mass Transfer, 211, p.124253_1 - 124253_13, 2023/09

 Times Cited Count:7 Percentile:80.65(Thermodynamics)

Journal Articles

Flow regime and void fraction predictions in vertical rod bundle flow channels

Han, X.*; Shen, X.*; Yamamoto, Toshihiro*; Nakajima, Ken*; Sun, Haomin; Hibiki, Takashi*

International Journal of Heat and Mass Transfer, 178, p.121637_1 - 121637_24, 2021/10

 Times Cited Count:18 Percentile:75.76(Thermodynamics)

Journal Articles

Consistent robin boundary enforcement of particle method for heat transfer problem with arbitrary geometry

Wang, Z.; Duan, G.*; Matsunaga, Takuya*; Sugiyama, Tomoyuki

International Journal of Heat and Mass Transfer, 157, p.119919_1 - 119919_20, 2020/08

 Times Cited Count:22 Percentile:79.41(Thermodynamics)

Journal Articles

Experimental study on local interfacial parameters in upward air-water bubbly flow in a vertical 6$$times$$6 rod bundle

Han, X.*; Shen, X.*; Yamamoto, Toshihiro*; Nakajima, Ken*; Sun, Haomin; Hibiki, Takashi*

International Journal of Heat and Mass Transfer, 144, p.118696_1 - 118696_19, 2019/12

 Times Cited Count:21 Percentile:70.96(Thermodynamics)

Journal Articles

Pressure drop and Void fraction of steam-water two-phase flow at high pressure

Liu, W.; Tamai, Hidesada*; Takase, Kazuyuki

Journal of Heat Transfer, 135(8), p.081502_1 - 081502_13, 2013/08

 Times Cited Count:7 Percentile:32.66(Thermodynamics)

For a steam generator in a commercialized sodium-cooled Fast Breeder Reactor (FBR), flow instability in the water side is one of the most important items need research. As the first step of the research, thermal-hydraulic experiments using water as the test fluid were performed under high pressure conditions at the Japan Atomic Energy Agency (JAEA) by using a circular tube. Void fraction, pressure drop and heat transfer coefficient data were obtained under 15, 17, and 18 MPa. This paper discusses the steam-water pressure drop and void fraction. Using the obtained data, we evaluated existing correlations for void fraction and two-phase flow multipliers. As a result, the drift flux model implemented in the TRAC-BF1 code was confirmed to suitably predict the void fraction well, under the present high pressure conditions. For the two-phase flow multiplier, the Chisholm correlation and the homogeneous model were confirmed to be the best under the present high-pressure conditions.

Journal Articles

Experimental investigation on transfer characteristics of temperature fluctuation from liquid sodium to wall in parallel triple-jet

Kimura, Nobuyuki; Miyakoshi, Hiroyuki; Kamide, Hideki

International Journal of Heat and Mass Transfer, 50(9-10), p.2024 - 2036, 2007/05

 Times Cited Count:56 Percentile:84.66(Thermodynamics)

A quantitative evaluation on thermal striping, in which temperature fluctuation due to convective mixing causes thermal fatigue in structural components, is of importance for integrity of nuclear reactors and also general plants. Sodium cooled reactor had also several incidents of coolant leakage due to the high cycle thermal fatigue. A sodium experiment of parallel triple-jet configuration was performed to evaluate transfer characteristics of temperature fluctuation from fluid to structure. The non-stationary heat transfer characteristics could be represented by a heat transfer coefficient, which was constant in time and independent of the frequency of the temperature fluctuation.

Journal Articles

Ultrahigh CHF prediction for subcooled flow boiling based on homogenous nucleation mechanism

Liu, W.; Nariai, Hideki*

Journal of Heat Transfer, 127(2), p.149 - 158, 2005/02

 Times Cited Count:17 Percentile:53.93(Thermodynamics)

Homogeneous nucleation, although being discounted as a mechanism for vapor formation for water in most conditions, is found being possible to occur under some extreme conditions in subcooled flow boiling. In this paper, firstly, the existence of the homogeneous nucleation governed condition is indicated. Followed, a criterion is developed to judge a given working condition is the conventional one or the homogeneous nucleation governed one. With the criterion, subcooled flow boiling data are categorized and typical homogeneous nucleation governed datasets are listed. CHF triggering mechanism for the homogeneous nucleation governed condition is proposed and verified. Parametric trends of the CHF, in terms of mass flux, pressure, inlet subcooling, channel diameter and the ratio of heated length to diameter are also studied.

Journal Articles

Study on the efficiency of effective thermal conductivities on melting characteristics of latent heat storage capsules

Shiina, Yasuaki; Inagaki, Terumi*

International Journal of Heat and Mass Transfer, 48(2), p.373 - 383, 2005/01

 Times Cited Count:37 Percentile:74.50(Thermodynamics)

Improvement of thermal conductivity of phase change medium would be one of the effective techniques to reduce phase change time in latent heat storage technology. Thermal conductivity would be improved by saturating phase change materials (PCM) in porous metals. Efficiency of effective thermal conductivity on melting time is studied by analyzing melting characteristics of a heat storage circular capsule where porous metal saturated by PCM is inserted. Results show that considerable reduction in melting time was obtained, especially for low conductivity PCMs and for high heat transfer coefficient. Trial estimation of optimum porosity was presented under the conditions of keeping high latent heat capacity and high reduction rate of melting time. Optimum porosity decreases with increase in heat transfer coefficient.

Journal Articles

Study on point of net vapor generation by neutron radiography in subcooled boiling flow along narrow rectangular channels with short heated length

Kureta, Masatoshi; Hibiki, Takashi*; Mishima, Kaichiro*; Akimoto, Hajime

International Journal of Heat and Mass Transfer, 46(7), p.1171 - 1181, 2003/03

 Times Cited Count:15 Percentile:51.79(Thermodynamics)

no abstracts in English

Journal Articles

Critical heat flux correlation for subcooled boiling flow in narrow channels

Kureta, Masatoshi; Akimoto, Hajime

International Journal of Heat and Mass Transfer, 45(20), p.4107 - 4115, 2002/09

 Times Cited Count:52 Percentile:83.90(Thermodynamics)

no abstracts in English

Journal Articles

Numerical Investigation of Mass and Heat Transfer in Sodium pool Combustion

Yamaguchi, Akira

International Journal of Numerical Heat Transfer, 41(6-7), 697 Pages, 2002/00

None

Journal Articles

Numerical analysis model for thermal conductivities of packed beds with high solid-to-gas conductivity ratio

Kikuchi, Shigeto*

International Journal of Heat and Mass Transfer, 44(6), p.1213 - 1221, 2001/03

 Times Cited Count:14 Percentile:53.01(Thermodynamics)

no abstracts in English

18 (Records 1-18 displayed on this page)
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