Presentation Information
[3E10]Numerical analysis for effects of pressure on wall condensation on a vertical flat plate
*Michio Murase1, Toshiya Takaki1, Koji Miyoshi1 (1. Institute of Nuclear Safety System, Inc.)
Keywords:
Wall condensation,Non-condensable gas,Vertical flat plate,CFD,Pressure
The subjects of this study were correlations for the condensation heat flux qc, which are used as boundary conditions on structure surfaces in computational fluid dynamics (CFD) analysis for thermal hydraulic behavior in a containment vessel (CV) during accident conditions. We carried out numerical computations for wall condensation from saturated steam and air mixture on a vertical flat plate by using the CFD code FLUENT and evaluated effects of pressure and mixture velocity on qc. It was confirmed that condensation heat transfer coefficient became large at high pressure due to large steam mass and that the mixture velocity at the transition from forced convection to natural convection condensation became large at high pressure.