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Efficient Modelling of Near-Wall Turbulence in Hybrid RANS-LES Simulations

Herr, Marius and Probst, Axel (2021) Efficient Modelling of Near-Wall Turbulence in Hybrid RANS-LES Simulations. In: 22nd STAB/DGLR Symposium on New Results in Numerical and Experimental Fluid Mechanics XIII, 151, pp. 615-624. Springer Nature. 22. STAB/DGLR Symposium 2020, 15.07.2020, Göttingen, Deutschland. doi: 10.1007/978-3-030-79561-0_58. ISBN 978-3-030-79560-3. ISSN 1612-2909.

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Official URL: https://link.springer.com/book/10.1007/978-3-030-79561-0#editorsandaffiliations


This study investigates the applicability and efficiency potential of analytical wall functions in conjunction with hybrid RANS-LES methods in two unstructured flow solvers, i.e. the compressible DLR-TAU code and the incompressible DLR-THETA code. Wall-modelled LES simulations of a periodic channel flow using IDDES confirm the validity of the wall-function approach over a broad range of grids with 12.5≤y+(1)≤210. For the more complex separated flows over a backward facing step and a wall-mounted hump, DDES simulations show that y+(1) has to be limited to 25 regardless of the flow solver, in order to achieve agreement with results using full near-wall resolution. Despite that restriction, the computing time can be reduced by up to 2/3 compared to the fully-resolved case.

Item URL in elib:https://elib.dlr.de/136146/
Document Type:Conference or Workshop Item (Other)
Additional Information:Hardcover ISBN 978-3-030-79560-3 Softcover ISBN 978-3-030-79563-4 eBook ISBN 978-3-030-79561-0 Series ISSN 1612-2909 Series E-ISSN 1860-0824
Title:Efficient Modelling of Near-Wall Turbulence in Hybrid RANS-LES Simulations
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Herr, MariusMarius.Herr (at) dlr.deUNSPECIFIED
Probst, AxelAxel.Probst (at) dlr.deUNSPECIFIED
Date:14 July 2021
Journal or Publication Title:22nd STAB/DGLR Symposium on New Results in Numerical and Experimental Fluid Mechanics XIII
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
DOI :10.1007/978-3-030-79561-0_58
Page Range:pp. 615-624
EditorsEmailEditor's ORCID iD
Dillmann, AndreasAndreas.Dillmann@dlr.deUNSPECIFIED
Heller, GerdAirbus BremenUNSPECIFIED
Krämer, EwaldInstitut für Aerodynamik und Gasdynamik, Universität StuttgartUNSPECIFIED
Wagner, ClausClaus.Wagner@dlr.deUNSPECIFIED
Publisher:Springer Nature
Series Name:Notes on Numerical Fluid Mechanics and Multidisciplinary Design
Keywords:wall functions, DDES, IDDES, HRLM, WF, HRLM-WF
Event Title:22. STAB/DGLR Symposium 2020
Event Location:Göttingen, Deutschland
Event Type:international Conference
Event Dates:15.07.2020
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 - VicToria (old), L - Simulation and Validation (old)
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > CASE, GO
Deposited By: Herr, Marius
Deposited On:10 Dec 2020 12:05
Last Modified:22 Feb 2022 18:20

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