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Grid adaptation using chimera composite overlapping meshesThe objective of this paper is to perform grid adaptation using composite overlapping meshes in regions of large gradient to accurately capture the salient features during computation. The chimera grid scheme, a multiple overset mesh technique, is used in combination with a Navier-Stokes solver. The numerical solution is first converged to a steady state based on an initial coarse mesh. Solution-adaptive enhancement is then performed by using a secondary fine grid system which oversets on top of the base grid in the high-gradient region, but without requiring the mesh boundaries to join in any special way. Communications through boundary interfaces between those separated grids are carried out using trilinear interpolation. Application to the Euler equations for shock reflections and to shock wave/boundary layer interaction problem are tested. With the present method, the salient features are well-resolved.
Document ID
19950053434
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Kao, Kai-Hsiung
(NASA Lewis Research Center Cleveland, OH, United States)
Liou, Meng-Sing
(NASA Lewis Research Center Cleveland, OH, United States)
Chow, Chuen-Yen
(Univ. of Colorado, Boulder, CO United States)
Date Acquired
August 16, 2013
Publication Date
May 1, 1994
Publication Information
Publication: AIAA Journal
Volume: 32
Issue: 5
ISSN: 0001-1452
Subject Category
Fluid Mechanics And Heat Transfer
Accession Number
95A85033
Funding Number(s)
CONTRACT_GRANT: NCC3-168
Distribution Limits
Public
Copyright
Other

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