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Uesawa, Shinichiro; Koizumi, Yasuo; Shibata, Mitsuhiko; Nagatake, Taku; Yoshida, Hiroyuki
Konsoryu, 31(2), p.162 - 170, 2017/06
no abstracts in English
Mishima, Kaichiro*; Hibiki, Takashi*; *; Tobita, Yoshiharu
PNC TY9604 96-003, 10 Pages, 1996/05
no abstracts in English
; Seki, Masahiro; ; Sanokawa, Konomo
Journal of Nuclear Science and Technology, 12(5), p.280 - 286, 1975/05
Times Cited Count：11no abstracts in English
; Sanokawa, Konomo; ; Ouchi, Mitsuo
Nihon Kikai Gakkai Rombunshu, B, 40(336), p.2311 - 2320, 1974/00
no abstracts in English
Uesawa, Shinichiro; Nagatake, Taku; Jiao, L.; Liu, W.; Takase, Kazuyuki; Koizumi, Yasuo; Yoshida, Hiroyuki
no journal, ,
no abstracts in English
Uesawa, Shinichiro; Koizumi, Yasuo; Shibata, Mitsuhiko; Yoshida, Hiroyuki
no journal, ,
no abstracts in English
Ono, Ayako; Uesawa, Shinichiro; Shibata, Mitsuhiko; Yoshida, Hiroyuki; Koizumi, Yasuo
no journal, ,
The boiling behavior was observed up to under 2MPa condition by high-speed camera, where was on the vertical surface in pool boiling, in order to grasp the mechanism of boiling including the bubble coalescence behavior and establish the model to predict the critical heat flux (CHF) under the high pressure condition. From these observations, the differences on the boiling behavior between under the atmospheric condition and higher pressure conditions were pointed out, and the phenomena and parameters to consider under the high pressure condition were considered in order to establish the CHF which was applicable to various pressure conditions.
Uesawa, Shinichiro
no journal, ,
Estimation of critical heat flux (CHF) is important for safety evaluation of nuclear reactor thermohydraulic design. However, the CHF mechanism has not been entirely revealed. On the other hand, experimental research of CHF has made great progress due to the dramatic improvement of measurement technology. Distributions of temperature, heat flux and dry patches on a heat transfer surface at CHF have been visualized by using high-speed cameras and infrared cameras. The result showed the irreversible expanded dry patch triggered the CHF phenomenon. However, there are few measurements of those distribution under high pressure and high subcooling conditions. In this report, previous studies of experiments and measurement techniques for elucidating CHF mechanism in pool boiling are reviewed, and the issues are discussed.
