Applications of unstructured hybrid grid method to high-Reynolds number viscous flows
✍ Scribed by Kazuhiro Nakahashi; Dmitri Sharov; Shintaro Kano; Masatoshi Kodera
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 388 KB
- Volume
- 31
- Category
- Article
- ISSN
- 0271-2091
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✦ Synopsis
In this paper, an unstructured hybrid grid method is discussed for its capability to compute three-dimensional compressible viscous flows of complex geometry. A hybrid of prismatic and tetrahedral grids is used to accurately resolve the wall boundary layers for high-Reynolds number viscous flows. The Navier-Stokes equations for compressible flows are solved by a finite volume, cell -vertex scheme. The LU-SGS implicit time integration method is used to reduce the computational time for very fine grids in boundary layer regions. Two kinds of one-equation turbulence models are evaluated here for their accuracy. The method is applied to computations of transonic flows around the ONERA M5 airplane and ONERA M6 wing, and supersonic shock/boundary layer interacting flows inside a scramjet inlet to validate the accuracy and efficiency of the method.