Results 211 to 220 of about 49,640 (263)

Influence of a Flow Obstacle on Boiling Two-Phase Flow

ASME 2011 Power Conference, Volume 1, 2011
The spacer of Boiling Water Reactor (BWR) becomes the flow obstacle. Moreover the clearance between fuel rods of the innovative Water Reactor for Flexible fuel cycle (FLWR) becomes very narrow. Thus understanding of the thermal-fluid characteristics in the boiling channel equipped with the flow obstacle becomes more important. In this study, to clarify
Takeyuki Ami, Hisashi Umekawa, Mamoru Ozawa   +2 more
openaire   +1 more source

Two Phase Boiling and Flow Instabilities in a Microchannel

ASME 5th International Conference on Nanochannels, Microchannels, and Minichannels, 2007
Boiling in microchannels is a very efficient mode of heat transfer. High heat and mass transfer coefficients are achieved. Evaporation of the liquid meniscus is the main contributor to the high heat fluxes achieved due to phase change at thin liquid films in a microchannel. The microscale hydrodynamic motion and the mechanisms at the immediate vicinity
Jacqueline Barber, K. Sefiane, D. Brutin, L. Tadrist   +3 more
openaire   +1 more source

Flow boiling heat transfer and two-phase flow in microgravity

Proceedings of the 15th International Heat Transfer Conference, 2014
Flow boiling heat transfer can provide high heat transfer rates due to latent heat transportation. Its possible use is therefore potentially important to reduce size and weight of cooling systems in space platforms and satellites. A comprehensive knowledge is also important for the safe operation of existing single-phase systems in case of accidental ...
Celata, G.P., Saraceno, L., Zummo, G.
openaire   +3 more sources

Boiling two-phase flow under microgravity

Nuclear Engineering and Design, 1994
To study the effects of reduced gravity on the flow regime and the heat transfer characteristics of a boiling two-phase horizontal flow, parabolic flight experiments were performed by using an aircraft. The gravity level during the parabolic flight and the duration time were about −0.01ge ∼ +0.01ge and 20 s, respectively.
Masaki Saito, Nobuo Yamaoka, Keiji Miyazaki, Masahiko Kinoshita, Yoshihito Abe   +4 more
openaire   +1 more source

Flow boiling of liquid nitrogen in micro-tubes: Part I – The onset of nucleate boiling, two-phase flow instability and two-phase flow pressure drop

International Journal of Heat and Mass Transfer, 2007
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Qi, S. L., Zhang, P., Wang, R. Z., Xu, L. X.   +3 more
openaire   +2 more sources

A Review of two-phase flow dynamic instabilities in tube boiling systems

International Journal of Heat and Mass Transfer, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bon, B., Kakaç, Sadık
openaire   +2 more sources

Two-Phase Flow, Boiling and Condensation

2007
Providing a comprehensive introduction to the fundamentals and applications of flow and heat transfer in conventional and miniature systems, this fully enhanced and updated edition covers all the topics essential for graduate courses on two-phase flow, boiling, and condensation.
openaire   +1 more source

Wall function approach for boiling two-phase flows

Nuclear Engineering and Design, 2010
Abstract One of the important goals of the NURESIM project is to assess and improve the simulation capability of the three-dimensional two-fluid codes for prediction of local boiling flow processes. The boiling flow is strongly affected by local mechanisms in the turbulent boundary layer near the heated wall. Wall-to-fluid transfer models for boiling
Boštjan Končar, Mavko Borut
openaire   +1 more source

A Stabilized Boiling/Evaporation Two-Phase Flow in Microchannels

ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer, Volume 2, 2009
The high degree of instability in boiling two-phase flow in parallel microchannels is a widely recognized phenomenon. However, if the maldistribution of flow is eliminated and the generated vapor is discharged smoothly through the careful design of the inlet and outlet plenums, in addition, by using part of each channel as a virtual throttle to depress
Ji Li, G. P. Peterson, Chen Li, Guoguang Su   +3 more
openaire   +1 more source

Two-phase flow oscillations in microchannel convective boiling

2007 IEEE 20th International Conference on Micro Electro Mechanical Systems (MEMS), 2007
A thermal microsystem with integrated heaters, pressure and temperature microsensors, has been fabricated to study local temperature and pressure fluctuations occurring in forced convective boiling in microchannels. The observed two-phase flows can be classified into two patterns: oscillating liquid/vapour interface and liquid burst flow; both leading ...
null Man Lee, null Yi-Kuen Lee, null Yitshak Zohar   +2 more
openaire   +1 more source