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Grid generation for general three-dimensional configurationsA suitable grid system for complex three dimensional configurations such as wing/body/nacelle shape for the solution of nonlinear transonic flow problems was constructed. Two approaches were explored based on Thompson's body fitted coordinate concept. The most general approach was to divide the computational domain into multiple rectangular blocks where the configuration itself was also represented by a set of blocks whose structure follows the natural lines of the configuration. The block structured grid system was adaptable to complex configurations and gives good grid quality near physical corners. However, it introduced algorithm issues for the flow solution concerning the treatment of nonanalytic grid block boundaries and nonstandard grid cells. These issues were explored in relation to the grid generation. A more limited approach treats a wing/body configuration with only a single rectangular block in computational space. The issues involving nonstandard cells were avoided, but other limitations on grid resolution appear. Both a linear and a nonlinear system of grid generation equations were developed including methods of grid control.
Document ID
19810006200
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Lee, K. D.
(Boeing Co. Seattle, WA, United States)
Huang, M.
(Boeing Co. Seattle, WA, United States)
Yu, N. J.
(Boeing Co. Seattle, WA, United States)
Rubbert, P. E.
(Boeing Co. Seattle, WA, United States)
Date Acquired
August 11, 2013
Publication Date
January 1, 1980
Publication Information
Publication: NASA. Langley Research Center Numerical Grid Generation Tech.
Subject Category
Numerical Analysis
Accession Number
81N14714
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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