Towards hybrid LES-RANS-coupling for complex flows with separation
Publication date
2007-03-02
Document type
Conference paper
Author
Organisational unit
Institute of Fluid Mechanics, University of Erlangen–Nürnberg
Conference
Computational Aeroacoustics and Computational Fluid Dynamics in Turbulent Flows (CEMRACS 2005) ; Marseille, France ; July 18 – August 26, 2005
Publisher
EDP Sciences
Series or journal
ESAIM: Proceedings and Surveys
ISSN
Periodical volume
16
Book title
ESAIM Proceedings : CEMRACS 2005 - Computational Aeroacoustics and Computational Fluid Dynamics in Turbulent Flows
First page
89
Last page
113
Peer-reviewed
✅
Part of the university bibliography
Nein
Language
English
Abstract
The paper is concerned with a new hybrid LES–RANS approach, which splits up the simulation into a near–wall RANS part and an outer LES part, both modes relying on a one–equation model for the turbulent kinetic energy. This model has been tested on the standard plane channel flow test case as well as on the flow over a periodic arrangement of hills. Encouraging results were achieved. In an additional study based on the detached–eddy simulation (DES) concept attempts have been made to improve the accuracy of the simulation by using adaptive local grid refinement. For this purpose, a criterion based on the residual of the budget of the mean momentum equations has been studied.
Version
Published version
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