Interface preconditionings for domain-decomposed convection-diffusion operatorsThe performance of five different interface preconditionings for domain-decomposed convection-diffusion problems, including a novel one known as the spectral probe is tested in a three-dimensional parameter space consisting of mesh parameters, Reynolds number, and domain aspect ratio. The preconditioners are representative of the range of practically computable possibilities that have appeared in the literature for the treatment of nonoverlapping subdomains. Numerical examples show that no single preconditioner can be considered uniformly superior or uniformly inferior to the rest, but that knowledge of the particulars of the shape and strength of the convection is important in selecting among them in a given problem.
Document ID
19910030133
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Chan, Tony F. (California, University Los Angeles, United States)
Keyes, David E. (Yale University New Haven, CT, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1990
Subject Category
Fluid Mechanics And Heat Transfer
Meeting Information
Meeting: International Symposium on Domain Decomposition Methods for Partial Differential Equations