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A Three Dimensional Dual-Time Stepping Method for the Solution of the Unsteady Navier-Stokes Equations

Heinrich, R. and Pahlke, K. and Bleecke, H. (1996) A Three Dimensional Dual-Time Stepping Method for the Solution of the Unsteady Navier-Stokes Equations. In: Proc. Conference Unsteady Aerodynamics, London, Paper No. 5, 1996.. Royal Aeronautical Society, London, U1V 0BQ, ISBN 1857680820.

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Abstract

A time-accurate flow solver for the two- and three-dimensional Reynolds-averaged Navier-Stokes equations has been developed. Up to now it is restricted to rigid body motions with three translational and rotational degrees of freedom. An implicit time discretization is used, and the resulting set of coupled non-linear equations is solved iteratively. This is accomplished using well proven convergence acceleration techniques for explicit schemes such as multigrid, residual averaging, and local time stepping, in order to achieve large computational efficiency in the calculation. The approach, known as dual-time stepping in literature, allows the physical time step to be chosen on the basis of accuracy rather than stability. The method is parallelized using the domain decomposition technique. Every processor of a computer or workstation cluster works on one or more blocks of the whole block structure. The communication.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=1996,
Title:A Three Dimensional Dual-Time Stepping Method for the Solution of the Unsteady Navier-Stokes Equations
Authors:
AuthorsInstitution or Email of Authors
Heinrich, R.UNSPECIFIED
Pahlke, K.UNSPECIFIED
Bleecke, H.UNSPECIFIED
Date:1996
Journal or Publication Title:Proc. Conference Unsteady Aerodynamics, London, Paper No. 5, 1996.
Publisher:Royal Aeronautical Society, London, U1V 0BQ, ISBN 1857680820
Status:Published
Keywords:unsteady, dual-time stepping, implicit methods, parallelization, Navier-Stokes, rigid body motion, LANN wing
HGF - Research field:UNSPECIFIED
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:UNSPECIFIED
DLR - Program:L SI - Versuchs- und Simulationstechniken
DLR - Research theme (Project):L - Concepts & Integration
Location: Köln-Porz , Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Institut für Entwurfsaerodynamik
Deposited By: elib DLR-Beauftragter
Deposited On:03 Apr 2006
Last Modified:27 Apr 2009 10:06

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