Two-phase flow simulation of gas entrainment phenomena in large-scale experimental model of sodium-cooled fast reactor

Ito, Kei; Kunugi, Tomoaki*; Ohshima, Hiroyuki; Kawamura, Takumi*

The authors have been developed a high-precision and high-performance numerical simulation algorithm for gas-liquid two-phase flows to simulate the gas entrainment (GE) phenomena in fast reactors. In this paper, the developed simulation algorithm is applied to the GE phenomena in a large-scale water experiment. As a result of the unsteady simulation, a typical interfacial dynamic behavior, i.e. the development of a gas core (interfacial dent), is well simulated. Therefore, it is confirmed that the developed simulation algorithm is suitable to evaluate numerically the GE phenomena in the fast reactors.