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Software for Refining or Coarsening Computational GridsA computer program performs calculations for refinement or coarsening of computational grids of the type called 'structured' (signifying that they are geometrically regular and/or are specified by relatively simple algebraic expressions). This program is designed to facilitate analysis of the numerical effects of changing structured grids utilized in computational fluid dynamics (CFD) software. Unlike prior grid-refinement and -coarsening programs, this program is not limited to doubling or halving: the user can specify any refinement or coarsening ratio, which can have a noninteger value. In addition to this ratio, the program accepts, as input, a grid file and the associated restart file, which is basically a file containing the most recent iteration of flow-field variables computed on the grid. The program then refines or coarsens the grid as specified, while maintaining the geometry and the stretching characteristics of the original grid. The program can interpolate from the input restart file to create a restart file for the refined or coarsened grid. The program provides a graphical user interface that facilitates the entry of input data for the grid-generation and restart-interpolation routines.
Document ID
20040004285
Acquisition Source
Stennis Space Center
Document Type
Other - NASA Tech Brief
Authors
Daines, Russell
(Lockheed Martin Corp. Bay Saint Louis, MS, United States)
Woods, Jody
(Lockheed Martin Corp. Bay Saint Louis, MS, United States)
Date Acquired
August 21, 2013
Publication Date
August 27, 2002
Subject Category
Computer Programming And Software
Report/Patent Number
NASA/NP-2002-10-00035-SSC
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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