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Asynchronous, macrotasked relaxation strategies for the solution of viscous, hypersonic flowsA point-implicit, asynchronous macrotasked relaxation of the steady, thin-layer, Navier-Stokes equations is presented. The method employs multidirectional, single-level storage Gauss-Seidel relaxation sweeps, which effectively communicate perturbations across the entire domain in 2n sweeps, where n is the dimension of the domain. In order to enhance convergence the application of relaxation factors to specific components of the Jacobian is examined using a stability analysis of the advection and diffusion equations. Attention is also given to the complications associated with asynchronous multitasking. Solutions are generated for hypersonic flows over blunt bodies in two and three dimensions with chemical reactions, utilizing single-tasked and multitasked relaxation strategies.
Document ID
19910056130
Document Type
Conference Paper
Authors
Gnoffo, Peter A.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1991
Subject Category
Aerodynamics
Report/Patent Number
AIAA PAPER 91-1579
Meeting Information
Meeting: AIAA Computational Fluid Dynamics Conference
Location: Honolulu, HI
Country: United States
Start Date: June 24, 1991
End Date: June 27, 1991
Accession Number
91A40753
Distribution Limits
Public
Copyright
Other

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