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Some recent results from the simulation and modeling of High-Speed Compressible Flows

[ mercredi 28-09-2005 16:00 | anglais ]Some recent results from the simulation and modeling of High-Speed Compressible Flows Thomas Gatski NASA Langley Research Center
Résumé :
Methodologies to predict practical high-speed compressible flows are best developed from a fundamental understanding of the dynamics of benchmark flows, as well as a mathematical framework consistent with the fundamental governing equations. In this talk, some representative direct numerical simulation results are presented for a supersonic boundary layer flow with and without an impinging shock. This includes a brief discussion of the numerical and computational domain related issues. Supplementing the numerical simulations, an analysis is presented showing the unique behavior of the pressure-strain rate correlation obtained from considering a convective wave equation for the disturbance pressure field rather than a pressure Poisson equation as in the incompressible case. Implications for model development are discussed throughout.