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Spatial adaptation procedures on tetrahedral meshes for unsteady aerodynamic flow calculationsSpatial adaptation procedures for the accurate and efficient solution of steady and unsteady inviscid flow problems are described. The adaptation procedures were developed and implemented within a three-dimensional, unstructured-grid, upwind-type Euler code. These procedures involve mesh enrichment and mesh coarsening to either add points in high gradient regions of the flow or remove points where they are not needed, respectively, to produce solutions of high spatial accuracy at minimal computational cost. The paper gives a detailed description of the enrichment and coarsening procedures and presents comparisons with experimental data for an ONERA M6 wing and an exact solution for a shock-tube problem to provide an assessment of the accuracy and efficiency of the capability. Steady and unsteady results, obtained using spatial adaptation procedures, are shown to be of high spatial accuracy, primarily in that discontinuities such as shock waves are captured very sharply.
Document ID
19930037119
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Rausch, Russ D.
(Purdue Univ. West Lafayette, IN, United States)
Batina, John T.
(NASA Langley Research Center Hampton, VA, United States)
Yang, Henry T. Y.
(Purdue Univ. West Lafayette, IN, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1993
Subject Category
Aerodynamics
Report/Patent Number
AIAA PAPER 93-0670
Meeting Information
Meeting: AIAA, Aerospace Sciences Meeting and Exhibit
Location: Reno, NV
Country: United States
Start Date: January 11, 1993
End Date: January 14, 1993
Sponsors: AIAA
Accession Number
93A21116
Funding Number(s)
CONTRACT_GRANT: NGT-50406
Distribution Limits
Public
Copyright
Other

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