Abstract
In this paper, a computational method was proposed for thermal interactions between compressible fluids and moving solids with different physical properties based on the mixture model. In the present method, physical properties of solids are considered in computational stages for heat conduction and velocities of multiphase fields. The present method was applied to natural convection in the cavity containing a square solid and obtained averaged Nusselt numbers on the heated wall were in good agreement with reference results. In addition, applicability of the present method was confirmed for compressible high buoyancy flows and heat transfer around a rotating triangular solid.