Spurious velocities in the steady flow of an incompressible fluid subjected to external forces

J. F. Gerbeau; C. Le Bris; M. Bercovier

doi:10.1002/(SICI)1097-0363(19970930)25:6<679::AID-FLD582>3.0.CO;2-Q

Spurious velocities in the steady flow of an incompressible fluid subjected to external forces

J. F. Gerbeau, C. Le Bris, M. Bercovier^*

^*Corresponding author for this work

The Rachel and Selim Benin School of Engineering and Computer Science

Research output: Contribution to journal › Article › peer-review

31 Scopus citations

Abstract

We show that a non-physical velocity may appear in the numerical computation of the flow of an incompressible fluid subjected to external forces. A distorted mesh and the use of a numerical method which does not rigorously ensure the incompressibility condition turn out to be responsible for this phenomenon. We illustrate it with numerical examples and we propose a projection method which improves the results.

Original language	English
Pages (from-to)	679-695
Number of pages	17
Journal	International Journal for Numerical Methods in Fluids
Volume	25
Issue number	6
DOIs	https://doi.org/10.1002/(SICI)1097-0363(19970930)25:6<679::AID-FLD582>3.0.CO;2-Q
State	Published - 30 Sep 1997

Keywords

Body force
Incompressible flow
Projection method

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10.1002/(SICI)1097-0363(19970930)25:6<679::AID-FLD582>3.0.CO;2-Q

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AB - We show that a non-physical velocity may appear in the numerical computation of the flow of an incompressible fluid subjected to external forces. A distorted mesh and the use of a numerical method which does not rigorously ensure the incompressibility condition turn out to be responsible for this phenomenon. We illustrate it with numerical examples and we propose a projection method which improves the results.

KW - Body force

KW - Incompressible flow

KW - Projection method

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Spurious velocities in the steady flow of an incompressible fluid subjected to external forces

Abstract

Keywords

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