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On the pressure approximation in nonstationary incompressible flow simulations on dynamically varying spatial meshes

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The subject of this paper is a defect in the approximation of the pressure on dynamically changing spatial meshes in the computation of nonstationary incompressible flows. The observed behavior is due to the fact that discrete solenoidal fields lose this property under changes of the spatial discret...

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Hauptverfasser: Besier, Michael (VerfasserIn) , Wollner, Winnifried (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 2012
In: International journal for numerical methods in fluids
Year: 2012, Jahrgang: 69, Heft: 6, Pages: 1045-1064
ISSN:1097-0363
DOI:10.1002/fld.2625
Online-Zugang:Verlag, Volltext: http://dx.doi.org/10.1002/fld.2625
Verlag, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1002/fld.2625
Volltext
Verfasserangaben:Michael Besier, Winnifried Wollner

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520 |a The subject of this paper is a defect in the approximation of the pressure on dynamically changing spatial meshes in the computation of nonstationary incompressible flows. The observed behavior is due to the fact that discrete solenoidal fields lose this property under changes of the spatial discretization. This phenomenon is analyzed for DG finite element discretizations in time, and possible ways are considered to circumvent this problem. Copyright © 2011 John Wiley & Sons, Ltd. 
650 4 |a backward Euler scheme 
650 4 |a DG method in time 
650 4 |a dynamically changing meshes 
650 4 |a incompressible Navier-Stokes equations 
650 4 |a pressure approximation 
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