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Scale-Resolving Simulations with a Low-Dissipation Low-Dispersion Second-Order Scheme for Unstructured Finite-Volume Flow Solvers

Probst, Axel and Löwe, Johannes and Reuß, Silvia and Knopp, Tobias and Kessler, Roland (2015) Scale-Resolving Simulations with a Low-Dissipation Low-Dispersion Second-Order Scheme for Unstructured Finite-Volume Flow Solvers. AIAA Science and Technology Forum and Exposition (AIAA SciTech 2015), 05. - 09. Jan. 2015, Kissimmee, FL, USA. DOI: 10.2514/6.2015-0816

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Official URL: http://arc.aiaa.org/doi/abs/10.2514/6.2015-0816

Abstract

A new low-dissipation low-dispersion 2nd-order scheme is applied to scale-resolving flow simulations using compressible and incompressible unstructured finite-volume solvers. In wall-resolved and wall-modeled LES computations of the channel flow the new scheme yields substantial improvements compared to the more dissipative/dispersive basic central scheme over a considerable range of Reynolds numbers. For general hy- brid RANS/LES simulations a numerical blending approach is applied which uses a local sensor function to switch between the new scheme in LES regions and the basic central scheme in the outer flow field. After an a-priori determination of a consistent sensor function, the hybrid numerical scheme is used to simulate a backward-facing step flow, where satisfactory results and reduced grid sensitivity are obtained. To demon- strate its potential in relevant aeronautical flows, the new scheme is successfully applied to hybrid RANS/LES computations of a 3-element airfoil near stall and a rudimentary landing gear with massive flow separation. Note that this paper is jointly published with a companion paper by Löwe et al., in which the low-dissipation low-dispersion 2nd-order scheme is derived and theoretically analyzed, followed by a basic assessment for fundamental numerical test cases.

Item URL in elib:https://elib.dlr.de/94011/
Document Type:Conference or Workshop Item (Speech)
Title:Scale-Resolving Simulations with a Low-Dissipation Low-Dispersion Second-Order Scheme for Unstructured Finite-Volume Flow Solvers
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Probst, Axelaxel.probst (at) dlr.deUNSPECIFIED
Löwe, Johannesjohannes.loewe (at) dlr.deUNSPECIFIED
Reuß, Silviasilvia.reuss (at) dlr.deUNSPECIFIED
Knopp, Tobiastobias.knopp (at) dlr.deUNSPECIFIED
Kessler, Rolandroland.kessler (at) dlr.deUNSPECIFIED
Date:2015
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI :10.2514/6.2015-0816
Page Range:pp. 1-18
Series Name:Conference Proceedings online
Status:Published
Keywords:low-dissipation, low-dispersion, TAU, THETA, hybrid RANS/LES
Event Title:AIAA Science and Technology Forum and Exposition (AIAA SciTech 2015)
Event Location:Kissimmee, FL, USA
Event Type:international Conference
Event Dates:05. - 09. Jan. 2015
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation and Validation
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > C²A²S²E - Center for Computer Applications in AeroSpace Science and Engineering
Deposited By: Micknaus, Ilka
Deposited On:05 May 2015 15:15
Last Modified:05 May 2015 15:15

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