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Numerical simulation of a buoyant heated air jet in large containment vessel CIGMA with outer surface cooling

CIGMA装置内での外面冷却時における高温浮力噴流に関する数値解析

Hamdani, A.  ; 安部 諭 ; 石垣 将宏 ; 柴本 泰照 ; 与能本 泰介 

Hamdani, A.; Abe, Satoshi; Ishigaki, Masahiro; Shibamoto, Yasuteru; Yonomoto, Taisuke

Gas density stratification build-up and its propagation/erosion, which is regarded as a benchmark of hydrogen behavior in a severe accident, were experimentally and numerically studied by using buoyant jet in the containment vessel. The experiments were conducted with external surface cooling and high-temperature air-jet inlet up to 435 degrees Celcius. The CFD simulation was also performed, and the data on temperature and velocity profile were used for the validation.

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