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Scale-resolving simulations of wall-bounded flows with an unstructured compressible flow solver

Probst, Axel and Reuß, Silvia (2014) Scale-resolving simulations of wall-bounded flows with an unstructured compressible flow solver. 5th Symposium on Hybrid RANS-LES Methods, 19. - 21. March 2014, College Station, Texas, USA.

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Official URL: http://www.hrlm.symposium.org

Abstract

The fully-developed channel flow at Re_tau ≈ 395 is used to validate scaleresolving simulations with the unstructured compressible DLR-TAU code. In a sensitivity study based on wall-resolved LES a low-dissipative spatial scheme is derived, which allows to predict the channel flow in fair agreement with DNS. Then the scheme is used in ImprovedDelayed DES computations in order to assess TAU’s capabilities for wall-modelled LES. Spatial-resolution requirements for obtaining acceptable mean-flow results are pointed out in a grid study. Besides, the combination of IDDES with an advanced vorticity filter is verified, and the effect of the underlying RANS approach, including Reynolds-stress modelling, is analysed.

Item URL in elib:https://elib.dlr.de/89001/
Document Type:Conference or Workshop Item (Speech)
Additional Information:Following a peer review, Revised Full Papers will be published (Springer Series: "Notes on Numerical Fluid Mechanics and Multidisciplinary Design")
Title:Scale-resolving simulations of wall-bounded flows with an unstructured compressible flow solver
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Probst, Axelaxel.probst (at) dlr.deUNSPECIFIED
Reuß, Silviasilvia.reuss (at) dlr.deUNSPECIFIED
Date:2014
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:channel flow, LES, hybrid RANS/LES, TAU, IDDES
Event Title:5th Symposium on Hybrid RANS-LES Methods
Event Location:College Station, Texas, USA
Event Type:international Conference
Event Dates:19. - 21. March 2014
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:18 Jun 2014 16:58
Last Modified:17 Feb 2015 12:59

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