Abstract:

A new sampling solution method of adiabatic boundary condition based on an iterative process in DSMC is introduced by analyzing the implementing process of DSMC method under thermodynamic non equilibrium conditions. Statistic error about this method is investigated by comparing blunt cone aerodynamics under different boundary conditions. The results show that this method is available for estimating adiabatic wall temperature. Statistic error of heat transfer rate decreases rapidly with the increase of sampling steps, and ultimately it is within 0.5%.

Key words: Rarefied gas, Thermodynamics non equilibrium, DSMC, Adiabatic boundary condition, Error analysis