Thermofluid dynamic analysis for THAI tests with passive hydrogen recombiner

静的触媒式水素再結合装置を用いたTHAI実験の熱流体解析

佐藤 允俊; 松本 俊慶 ; 杉山 智之 ; 丸山 結 

Sato, Masatoshi; Matsumoto, Toshinori; Sugiyama, Tomoyuki; Maruyama, Yu

In this study, thermofluid dynamic analyses were carried out for 3 tests, HR3, HR5 and HR12 in the OECD/NEA THAI project, with the Passive autocatalytic recombiner (PAR) manufactured by AREVA. The major parameters in these 3 tests were the initial pressure and steam concentration in the test vessel. The analyses were performed with an open source computational fluid dynamics code, OpenFOAM. The solver was modified by embedding the correlation equations of hydrogen recombination rate for the PAR. The results from the present analyses indicated that the modified solver well reproduced the measured characteristics for PAR behaviour such as hydrogen recombination rate, flow velocity and temperature distribution, hydrogen and oxygen concentration, and so on.