Abonnement à la biblothèque: Guest
Portail numérique Bibliothèque numérique eBooks Revues Références et comptes rendus Collections
Multiphase Science and Technology
SJR: 0.124 SNIP: 0.222 CiteScore™: 0.26

ISSN Imprimer: 0276-1459
ISSN En ligne: 1943-6181

Multiphase Science and Technology

DOI: 10.1615/MultScienTechn.v19.i4.40
pages 363-372

VISUALIZATION OF DRYOUT PHENOMENON AND LIQUID FILM BEHAVIOR USING A SINGLE SUBCHANNEL OF A TIGHT LATTICE BUNDLE

Miyuki Akiba
Toshiba Corporation, Yokohama, Kanagawa, Japan
Shinichi Morooka
Toshiba Corporation, Yokohama, Kanagawa, Japan
Junji Mimatsu
Dept. of Mechanical Engineering, Gifu University, Gifu, Japan
Sinji Sakai
Gifu University, Gifu, Japan
Akira Inoue
Research Laboratory of Nuclear Reactor, Tokyo Institute of Technology, Tokyo, Japan

RÉSUMÉ

The development of fast neutron spectrum boiling water reactors requires understanding of flow behavior in a tight lattice bundle. We conducted experiments to visualize single-channel flow under atmospheric conditions and to measure the critical heat flux (CHF) location and liquid film behavior. The observed flow pattern in the tight lattice was in agreement with the Hewitt-Roberts flow pattern map. CHF occurred at the wider rod gap location. Furthermore, the liquid film flow rate at this location was less than that at the narrow rod gap location. The CHF mechanism in a tight lattice would be the film dryout occurring by decreasing the liquid film flow rate.


Articles with similar content:

EXPERIMENTAL STUDY OF HEAT TRANSFER DURING QUENCHING OF A HEATED ROD
3rd Thermal and Fluids Engineering Conference (TFEC), Vol.17, 2018, issue
Fan Bill Cheung, Turki K. Almudhhi, Shikha A. Ebrahim
Boiling Behaviors on a Vertical Surface in Saturated Pool Boiling at High Pressures
International Heat Transfer Conference 15, Vol.38, 2014, issue
Hiroto Sakashita
Critical Heat Flux of Counter-Current Two-Phase Flow in Vertical-Narrow-Annular Flow Passages
International Heat Transfer Conference 12, Vol.41, 2002, issue
Yasuo Koizumi, Takao Watanabe, Hiroyasu Ohtake
WALL EFFECTS ON SUBCOOLED BOILING-INDUCED VIBRATION PHENOMENA OF A SINGLE HEATER ROD
First Thermal and Fluids Engineering Summer Conference, Vol.15, 2015, issue
Yusuke Hashimoto, Tomoaki Kunugi, Kenji Takano, Zensaku Kawara, Takehiko Yokomine
EXPERIMENTAL STUDIES ON THE MECHANISMS OF BURNOUT IN HEAT TRANSFER TO STEAM-WATER MIXTURES
International Heat Transfer Conference 4, Vol.27, 1970, issue
Geoffrey F. Hewitt