Study on gas entrainment in sodium cooled fast reactors, 2; Examination of appropriate numerical method

Ito, Kei; Sakai, Takaaki; Ohshima, Hiroyuki; Tanaka, Nobuatsu*

Based on numerical simulations, a gas entarainment (GE) evaluation method have been developed to estimate GE occurence in a sodium-cooled fast reactor. In this research, several numerical simulations were conducted on a basic GE experiment and the GE phenomena in the experiments were evaluated by the developing GE evaluation method using the velocity data obtained from simulation results. From the results of the GE evaluation, sensitivities of mesh partition or turbulent modeling on the simulation accuracy were examined.