Abstract
We simulated multicomponent gas flow in a mock containment vessel using open source CFD code "OpenFOAM". Steam condensation model is implemented in multicomponent gas flow solver developed with OpenFOAM. In this condensation model, the amount of condensated water on wall is calculated by mass flux of the steam coexisting with noncondensation gas. We calculated two test cases; helium and nitrogen gas flows in vessel, and steam and nitrogen gas flows in duct with condensation.
