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Accurate Flux Vector Splitting for Shocks and Shear Layers.

Radespiel, R. and Kroll, N. (1995) Accurate Flux Vector Splitting for Shocks and Shear Layers. Journal of Computational Physics 121, 66-78, 1995.

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Abstract

The Advection Upstream Splitting Method (AUSM) recently developed by Liou and Steffen is improved towards more accurate predictions of viscous flows. The special merits of AUSM compared to other upwind schemes are the low computational complexity and the low numerical diffusion. However, it is known that the original method also has several deficiencies. It locally produces pressure oscillations in the vicinity of shocks and in cases of adverse grid situations and flow alignment. In this paper a hybrid flux vector splitting scheme is proposed which switches from AUSM to van Leer at shock waves ensuring a sharp and clean resolution of strong shocks. In order to achieve sufficient damping, a modified dissipative term is introduced, which prevents the scheme from being undamped as Mach number approaches zero. Various modifications of the standard MUSCL implementations for second-order accuracy are proposed, which.

Document Type:Article
Additional Information: LIDO-Berichtsjahr=1995, pages=13,
Title:Accurate Flux Vector Splitting for Shocks and Shear Layers.
Authors:
AuthorsInstitution or Email of Authors
Radespiel, R.UNSPECIFIED
Kroll, N.UNSPECIFIED
Date:1995
Journal or Publication Title:Journal of Computational Physics 121, 66-78, 1995
Refereed publication:Yes
In ISI Web of Science:Yes
Status:Published
Keywords:Navier-Stokes solvers, improved flux vector splitting, AUSM scheme
HGF - Research field:UNSPECIFIED
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:UNSPECIFIED
DLR - Program:L TG - Querschnittstechnologien
DLR - Research theme (Project):L - Systems & Cabin
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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