Wall modelling for implicit large eddy simulation of favourable and adverse pressure gradient flows

Zhen Li Chen*, Antoine Devesa, Michael Meyer, Eric Lauer, Stefan Hickel, Christian Stemmer, Nikolaus A. Adams

*Corresponding author for this work

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

Abstract

In order to perform Implicit Large Eddy Simulation (ILES) on complex geometries at high Reynolds numbers, a wall model based on the simplified Thin Boundary Layer Equations (TBLE) is designed in the framework of ILES with a cut-cell finite-volume immersed boundary method. This wall model is validated for turbulent channel flow at friction Reynolds number up to Reτ = 2,000 on very coarse grids. The results compared with DNS and LES without wall model show that the wall model has the potential to improve the mean velocity in the outer flow region well at high Reynolds number. The wall model is applied to a complex converging diverging channel flow at Reynolds number Re = 7,900 on very coarse meshes. Improved mean velocities and Reynolds stresses are obtained, which shows that the wall model has the ability to perform ILES on complex geometries at high Reynolds numbers.

Original languageEnglish
Title of host publicationProgress in Wall Turbulence
Subtitle of host publicationUnderstanding and Modeling - Proceedings of the WALLTURB International Workshop, 2009
EditorsMichel Stanislas, Javier Jimenez, Ivan Marusic
PublisherSpringer
Pages337-346
Number of pages10
ISBN (Print)9789048196029
DOIs
Publication statusPublished - 1 Jan 2011
Externally publishedYes
EventInternational Workshop on Understanding and Modelling of Wall Turbulence, 2009 - Lille, France
Duration: 21 Apr 200923 Apr 2009

Publication series

NameERCOFTAC Series
Volume14
ISSN (Print)1382-4309
ISSN (Electronic)2215-1826

Conference

ConferenceInternational Workshop on Understanding and Modelling of Wall Turbulence, 2009
Country/TerritoryFrance
CityLille
Period21/04/0923/04/09

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