Scheme effect and grid dependency in CFD computations of heat transfer

Scheme effect and grid dependency in computational fluid dynamics (CFD) heat computations are studied in this work. A variety of typical schemes, such as FDS, FVS AUSM + and central finite difference, are evaluated in numerical experiments. Comprehensive comparisons between numerical results and experimental data reveal that the AUSM + scheme has better resolutions in heat computations. In addition, the numerical stimulation of surface heat flux is highly sensitive to the grid system employed in the CFD computations. Studies of grid dependency demonstrate the influence mechanism of grid properties on heat transfer computations.