Numerical simulation on coupling effect of laser irradiation in supersonic flow

Interaction between structures and laser irradiation is a complex multi-physics process with heat-fluid-solid coupling effects. Laser irradiation on a plate in supersonic flow is simulated. Computational fluid dynamics (CFD) and Finite Element Method (FEM) software are adopted, while MPCCI is used to exchange the data between fluid and solid solvers. Moreover, Mach number and attack angle are derived as control parameters using theoretical analysis. Numerical results indicate that the cooling effect is dominant when the Mach number is less than 6, while aerodynamic heating effect is more important when the Mach number is greater than 6. The cooling effect becomes more remarkable as the attack angle increases. Finally, the mechanism of heating and cooling of aerodynamic flow field are analyzed comprehensively.