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Investigation of Resolution Requirements for Wall-Modelled LES of Attached and Massively Separated Flows at High Reynolds Numbers

Zhang, Xiaoqin and Knopp, Tobias and Valentino, Mariafrancesca and Kessler, Roland and Lube, Gerd (2010) Investigation of Resolution Requirements for Wall-Modelled LES of Attached and Massively Separated Flows at High Reynolds Numbers. In: New Results in Numerical and Experimental Fluid Mechanics VII Notes on numerical fluid mechanics and multidisciplinary design, 112. Springer Verlag, Berlin Heidelberg. pp. 167-174. ISBN 978-3-642-14242-0. ISSN 1612-2909

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Official URL: http://link.springer.com/chapter/10.1007/978-3-642-14243-7_21

Abstract

This work is dedicated to the resolution requirements of Large-Eddy Simulation (LES) with near-wall modelling for attached and massively separated flows at high Reynolds numbers using the DLR THETA code. Two sensors are proposed to measure the resolution quality of LES for statistically steady flows. The first sensor is based on the resolved turbulent kinetic energy and the second one considers the resolved turbulent shear stress. These sensors are applied to turbulent channel flow at Re_tau=4800 and to the flow over a backward-facing step at Re_h=37500 on successively refined meshes, and results are compared with a convergence study of the mean velocity profiles.

Item URL in elib:https://elib.dlr.de/66668/
Document Type:Contribution to a Collection
Title:Investigation of Resolution Requirements for Wall-Modelled LES of Attached and Massively Separated Flows at High Reynolds Numbers
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Zhang, XiaoqinSchool of Mechanical and Aerospace Engineering, Nanyang Technological University, 50, Nanyang Avenue, 639798, SingaporeUNSPECIFIED
Knopp, TobiasTobias.Knopp (at) dlr.deUNSPECIFIED
Valentino, MariafrancescaDLRUNSPECIFIED
Kessler, Rolandroland.kessler (at) dlr.deUNSPECIFIED
Lube, GerdUni GöttingenUNSPECIFIED
Date:2010
Journal or Publication Title:New Results in Numerical and Experimental Fluid Mechanics VII
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:112
DOI :10.1007/978-3-642-14243-7_21
Page Range:pp. 167-174
Editors:
EditorsEmail
Dillmann, AndreasDLR
Heller, GerdAirbus Deutschland
Klaas, MichaelTU Berlin
Kreplin, Hans-PeterDLR
Nitsche, WolfgangTU Berlin
Schroeder, WolfgangRWTH Aachen
Publisher:Springer Verlag, Berlin Heidelberg
Series Name:Notes on numerical fluid mechanics and multidisciplinary design
ISSN:1612-2909
ISBN:978-3-642-14242-0
Status:Published
Keywords:large-eddy simulation; wall-functions; turbulent-channel flow; backward-facing step; resolved turbulent kinetic energy; convergence study
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 - Concepts & Integration (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > C²A²S²E - Center for Computer Applications in AeroSpace Science and Engineering
Deposited By: Knopp, Dr.rer.nat. Tobias
Deposited On:10 Feb 2011 08:24
Last Modified:02 Mar 2015 11:01

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