Abstract: High-speed flow fields are highly complex and difficult to characterize in detail.Optimizing grid layout can enhance the depiction of such flows,thereby improving the accuracy of aerodynamic/aeroheating numerical simulations.This paper employs a blunt-body model as the research subject,constructing surface meshes for high-speed flows using different mesh generation methods.By comparing the numerical simulation accuracy of aerodynamic/aeroheating across these grids,the influence of surface grid construction methods on numerical predictions is analyzed.Through multiple case validations,an optimized surface grid generation method is proposed for high-precision computation of high-speed flow fields.The recommended method provides a reliable foundation for high-fidelity numerical simulations of aerodynamic/aeroheating in high-speed flows.

Key words: surface grid, structured grid, construction method, aerodynamic/aeroheating