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Accuracy of the Cell-Centered Grid Metric in the DLR TAU-Code

Schwöppe, Axel and Diskin, Boris (2013) Accuracy of the Cell-Centered Grid Metric in the DLR TAU-Code. In: New Results in Numerical and Experimental Fluid Mechanics VIII Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 121. Springer Verlag. pp. 429-437. ISBN 978-3-642-35679-7. ISSN 1612-2909

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Official URL: http://link.springer.com/chapter/10.1007/978-3-642-35680-3_51

Abstract

The drag prediction accuracy of the current version of the cell-centered grid metric discretization in the edge-based flow solver TAU lags behind the accuracy of the cell-vertex grid metric on highly-skewed unstructured meshes. Inaccurate convective fluxes and gradients contributing to the turbulence sources are identified as the reasons for this accuracy degradation. Alternative approaches for cell-centered discretizations are presented and shown to lead to significant accuracy and robustness improvements. Recommendations are given to improve spatial discretization schemes for the cell-centered grid metric in an edge-based finite volume code.

Item URL in elib:https://elib.dlr.de/82493/
Document Type:Contribution to a Collection
Title:Accuracy of the Cell-Centered Grid Metric in the DLR TAU-Code
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Schwöppe, Axelaxel.schwoeppe (at) dlr.deUNSPECIFIED
Diskin, Borisbdiskin (at) nianet.orgUNSPECIFIED
Date:2013
Journal or Publication Title:New Results in Numerical and Experimental Fluid Mechanics VIII
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:121
Page Range:pp. 429-437
Editors:
EditorsEmail
Dillmann, AndreasDLR
Heller, GerdAirbus Deutschland
Kreplin, Hans-PeterDLR
Nitsche, WolfgangTU Berlin
Pletzer, InkenBeechcraft Berlin aviation GmbH
Publisher:Springer Verlag
Series Name:Notes on Numerical Fluid Mechanics and Multidisciplinary Design
ISSN:1612-2909
ISBN:978-3-642-35679-7
Status:Published
Keywords:DLR TAU-Code, Finite Volume Method, Cell-Centered grid metric, spatial discretization
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation & Validation (old)
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > C²A²S²E - Center for Computer Applications in AeroSpace Science and Engineering
Deposited By: Schwöppe, Axel
Deposited On:29 May 2013 15:17
Last Modified:27 Feb 2015 12:00

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