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A 3D UNSTRUCTURED MESH ADAPTATION ALGORITHM FOR TIME-DEPENDENT SHOCK-DOMINATED PROBLEMS

✍ Scribed by W. Speares; M. Berzins

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
749 KB
Volume
25
Category
Article
ISSN
0271-2091

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✦ Synopsis

In this paper we present a tetrahedron-based, h-re®nement-type algorithm for the solution of problems in 3D gas dynamics using unstructured mesh adaptation. The mesh adaptation algorithm is coupled to a cell-centred, Riemann problem-based, ®nite volume scheme of the MUSCL type, employing an approximate Riemann solver. The adaptive scheme is then used to compute the diffraction of shock waves around a box section corner for subsonic and supersonic post-shock ¯ow. In the subsonic case, preliminary measurements of vortex ®lament speed and vortical Mach number are in broad quantitative agreement with known theoretical results.

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