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Hirakawa, Moe*; Kikuchi, Yuichiro*; Sakai, Takaaki*; Tanaka, Masaaki; Ohshima, Hiroyuki
Proceedings of 26th International Conference on Nuclear Engineering (ICONE-26) (Internet), 8 Pages, 2018/07
Gas entrainment (GE) from cover gas is one of key issue for Sodium-cooled fast reactors to prevent unexpected effects to core reactivity. By using a computational fluid dynamics (CFD) code, analyses have been conducted to estimate the drifting vortexes on water experiments which were generated as wake vortexes behind a plate obstacle in the circulating water channel. In this paper, the results of comparison between experiments and analyses were discussed and the gas core lengths from the surface vortexes were evaluated by using the evaluation tool named StreamViewer developed by Japan Atomic Energy Agency.
Uchida, Mao*; Hirakawa, Moe*; Inoue, Keisuke*; Sano, Aaru*; Sakai, Takaaki*; Ezure, Toshiki; Tanaka, Masaaki
no journal, ,
Visualization measurements using a high-speed camera and numerical analyses were carried out for gas entrainment phenomenon due to free surface drifting vortices in an open rectangular channel. The applicability of gas core length based on numerical analyses was confirmed for drifting vortices in the open channel through the comparison with experimental results.