Condensation of a large-scale bubble in subcooled liquid; Experimental verification of the SIMMER-III code

Morita, Koji*; Matsumoto, Tatsuya*; Fukuda, Kenji*; Tobita, Yoshiharu; Sato, Ikken ; Yamano, Hidemasa   

In the present study, a series of experiments was performed for transient behaviors of large-scale bubble with condensation. Characteristics of the bubble behaviors observed in the experiments were estimated through the experimental analyses using the reactor safety analysis code SIMMER-III. SIMMER-III simulations suggest that the noncondensable gas has less inhibiting effect on condensation of large-scale bubbles, in which the gas and liquid phases are dispersively mixed without a buildup of the noncondensable gas. The present study indicates that SIMMER-III can simulate the condensation processes of large-scale bubbles under the effect of noncondensable gas reasonably in sufficient physical details.