NDLI: Three-dimensional high-lift analysis using a parallel unstructured multigrid solver

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Three-dimensional high-lift analysis using a parallel unstructured multigrid solver

Content Provider	NASA Technical Reports Server (NTRS)
Author	Mavriplis, Dimitri J.
Copyright Year	1998
Description	A directional implicit unstructured agglomeration multigrid solver is ported to shared and distributed memory massively parallel machines using the explicit domain-decomposition and message-passing approach. Because the algorithm operates on local implicit lines in the unstructured mesh, special care is required in partitioning the problem for parallel computing. A weighted partitioning strategy is described which avoids breaking the implicit lines across processor boundaries, while incurring minimal additional communication overhead. Good scalability is demonstrated on a 128 processor SGI Origin 2000 machine and on a 512 processor CRAY T3E machine for reasonably fine grids. The feasibility of performing large-scale unstructured grid calculations with the parallel multigrid algorithm is demonstrated by computing the flow over a partial-span flap wing high-lift geometry on a highly resolved grid of 13.5 million points in approximately 4 hours of wall clock time on the CRAY T3E.
File Size	1354771
Page Count	22
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19980210015
Archival Resource Key	ark:/13960/t4cp2215n
Language	English
Publisher Date	1998-05-01
Access Restriction	Open
Subject Keyword	Numerical Analysis Messages Computational Fluid Dynamics Unstructured Grids Mathematics Time Measurement Decomposition Agglomeration Parallel Processing Computers Algorithms Massively Parallel Processors Computational Grids Three Dimensional Models Cray Computers Flapping Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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