MISTRAL: CONUS Debut Flow Field and Heat Transfer Calculations

MISTRAL, a CFD (computational fluid dynamics) code developed by Martin Spel and Walter Dieudonne at R.Tech, is compared against theory and literature for geometries and flow conditions of interest in the design of the JSF F136 diffuserliner secondary flow path and in the design of supersonic/hypersonic weapons systems. The MISTRAL flow solver has primarily been validated in high speed flow regimes. The current validation study is the first use of the MISTRAL CFD code in the United States and focuses on fluid side heat transfer. The first step involves validation with van Driest theory (Stanton number) for heat transfer rate on a flat plate in subsonic and supersonic flows. Classical cylindrical and spherical geometries in supersonic flows are then studied to verify pressure drag, skin friction drag, heat transfer, and shock structure.