DSMC Numerical Simulation Research on Aerodynamic heating at Hypersonic Transition Regime

Aerodynamic heating is one of important factors affecting hypersonic aircraft design.When the flight altitude is higher than 40 km,the transition regime flow takes on flow features of certain transitional region.The DSMC based on the molecular dynamics is one of the effective methods to calculate aerodynamic heating at hypersonic transition regime flow.In terms of one sphere-cone configuration,the present work studies the aerodynamic heating of the transition regime flow by DSMC method and analyzes the influence of flight Mach number and flight altitude on the aerodynamic heating.Then the data achieved are compared with the result of the Fay-Riddell method.The conclusion is that,DSMC method can perform very good result in calculating aerodynamic heating of hypersonic transition regime flow,and can be applied to the calculation and analysis of this issue.