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Three-dimensional surface grid generation for calculation of thermal radiation shape factorsA technique is described to generate three dimensional surface grids suitable for calculating shape factors for thermal radiative heat transfer. The surface under consideration is approximated by finite triangular elements generated in a special manner. The grid is generated by dividing the surface into a two dimensional array of nodes. Each node is defined by its coordinates. Each set of four adjacent nodes is used to construct two triangular elements. Each triangular element is characterized by the vector representation of its vertices. Vector algebra is used to calculate all desired geometric properties of grid elements. The properties are used to determine the shape factor between the element and an area element in space. The grid generation can be graphically displayed using any software with three dimensional features. DISSPLA was used to view the grids.
Document ID
19920015165
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Aly, Hany M. (TRW, Inc. San Bernardino, CA, United States)
Date Acquired
September 6, 2013
Publication Date
April 1, 1992
Publication Information
Publication: NASA. Langley Research Center, Software Surface Modeling and Grid Generation Steering Committee
Subject Category
Computer Programming And Software
Accession Number
92N24408
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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