Actions for Preconditioned methods for solving the incompressible and low speed compressible equations

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Preconditioned methods for solving the incompressible and low speed compressible equations

Author
Turkel, E.
Published
Mar 1, 1986.
Physical Description
1 electronic document
Online Version

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Summary
Acceleration methods are presented for solving the steady state incompressible equations. These systems are preconditioned by introducing artificial time derivatives which allow for a faster convergence to the steady state. The compressible equations in conservation form with slow flow are also considered. Two arbitrary functions, alpha and beta, are introduced in the general preconditioning. An analysis of this system is presented and an optimal value for beta is determined given a constant, alpha. It is further shown that the resultant incompressible equations form a symmetric hyperbolic system and so are well posed. Several generalizations to the compressible equations are presented which generalize previous results.
Other Subject(s)
Collection
NASA Technical Reports Server (NTRS) Collection.
Note
Document ID: 19860016597.
Accession ID: 86N26069.
ICASE-86-14.
NAS 1.26:178086.
NASA-CR-178086.
Terms of Use and Reproduction
No Copyright.
View MARC record | catkey: 15702515