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Grid adaptation using Chimera composite overlapping meshesThe objective of this paper is to perform grid adaptation using composite over-lapping meshes in regions of large gradient to capture the salient features accurately 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 tri-linear interpolation. Applications to the Euler equations for shock reflections and to a shock wave/boundary layer interaction problem are tested. With the present method, the salient features are well resolved.
Document ID
19930061083
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
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
(Colorado Univ. Boulder, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1993
Publication Information
Publication: In: AIAA Computational Fluid Dynamics Conference, 11th, Orlando, FL, July 6-9, 1993, Technical Papers. Pt. 2 (A93-44994 18-34)
Publisher: American Institute of Aeronautics and Astronautics
Subject Category
Numerical Analysis
Report/Patent Number
AIAA PAPER 93-3389
Accession Number
93A45080
Funding Number(s)
CONTRACT_GRANT: NCC3-233
PROJECT: RTOP 505-90-5X
CONTRACT_GRANT: NCC3-168
Distribution Limits
Public
Copyright
Other

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