Solution of Some 3-D Viscous and Inviscid Supersonic Flow Problems by Finite-Volume Space-Marching Schemes,
DORNIER G M B H FRIEDRICHSHAFEN (GERMANY F R)
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For prediction of steady supersonic flow fields two numerical methods for solution of the three-dimensional Euler-and parabolized Navier-Stokes PNS- equations are considered. Both are based on a Finite-Volume discretisation FVD of the governing conservation laws and because of the special properties of steady supersonic flows cost-effective space-marching integration techniques can be applied. Both methods are described and results for inviscid and viscous flows are presented. In view of the upcoming European Space Transportation activities the simulation of hypersonic flows past complex blunted lifting vehicles requires also efficient methods for solution of the full, not-reduced Navier-Stokes equations. These are needed to provide solutions for super- and hypersonic flow fields with large subsonic regions and also to get accurate initial conditions for the space marching codes developed. A relaxation procedure for the steady form of the not-reduced Navier-Stokes and the Euler equations is described and some first results are presented.
- Fluid Mechanics