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Pseudo-compressibility methods for the incompressible flow equationsPreconditioning methods to accelerate convergence to a steady state for the incompressible fluid dynamics equations are considered. The analysis relies on the inviscid equations. The preconditioning consists of a matrix multiplying the time derivatives. Thus the steady state of the preconditioned system is the same as the steady state of the original system. The method is compared to other types of pseudo-compressibility. For finite difference methods preconditioning can change and improve the steady state solutions. An application to viscous flow around a cascade with a non-periodic mesh is presented.
Document ID
19940014842
Acquisition Source
Legacy CDMS
Document Type
Preprint (Draft being sent to journal)
Authors
Turkel, Eli (NASA Langley Research Center Hampton, VA., United States)
Arnone, A. (Florence Univ. Italy)
Date Acquired
September 6, 2013
Publication Date
September 1, 1993
Subject Category
Numerical Analysis
Report/Patent Number
NAS 1.26:191533
ICASE-93-66
NASA-CR-191533
AD-A273657
Accession Number
94N19315
Funding Number(s)
PROJECT: RTOP 505-90-52-01
CONTRACT_GRANT: NAS1-18605
CONTRACT_GRANT: NAS1-19480
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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