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Wall-Modeled Large Eddy Simulation for Rotating Flows

Loppi, Niki and Bodart, Julien and Dufour, Guillaume Wall-Modeled Large Eddy Simulation for Rotating Flows. (2015) In: ERCOFTAC WORKSHOP Direct and Large-Eddy Simulation 10 (DLES 10), 27 May 2015 - 29 May 2015 (Limassol, Cyprus). (Unpublished)

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Abstract

In this study, a wall-resolved simulation is performed, using a bulk Reynolds number of 20,000 and a rotation number of 0.45. The wall-resolved computation is harnessed to a priori test the wall-modeling strategy based on the RANS/LES grid decoupling proposed by Kawai and Larsson. The standard formulation is found to be unable to adapt to the rotation effects on wall shear stresses, which motivates modifying the expression of the eddy viscosity in the wall-model. A rotation correction, adopted from previous work in the RANS framework is proposed and tested against the wall-resolved reference data. The correction is found to significantly improve the shear stress prediction in the wall-modeled LES, and largely reduce the wall-model layer thickness dependency in the results.

Item Type:Conference or Workshop Item (Paper)
Audience (conference):International conference proceedings
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Institution:Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
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Deposited By: Guillaume Dufour
Deposited On:31 Aug 2016 13:11

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