New Calculation Method of Supersonic/Hypersonic Flow: Application to MESUR Capsule

摘要

A new calculation method of flowfleld around supersonic/ hypersonic vehicles based on the FEM has been presented. The merit of this method was treatment of the pressure term in the Navier-Stokes equations. That is, the stress tensor including the pressure term was calculated as the nondifferential form in the weighted residual equation. By the use of this method for the analysis of compressible flows with shock waves, flowfields were calculated with more stable computation and less numerical error than that of conventional FEM analysis. The correctness of the present method was confirmed by comparing the shock shape, spatial streamlines, and the separation point. From these results, it could be concluded that the calculated results and visualized ones were in very good agreement. However, the conventional FEM results were very different from the experimental ones. The comparisons were carried out under the condition of a Mach 10 flow by using the MESUR capsule models.