Cinlar Subgrid Scale Model for Large Eddy Simulation

We construct a new subgrid scale (SGS) stress model for representing the small scale effects in large eddy simulation (LES) of incompressible flows. We use the covariance tensor for representing the Reynolds stress and include Clark's model for the cross stress. The Reynolds stress is obtained...

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Bibliographic Details
Main Authors Kara, Rukiye, Caglar, Mine
Format Journal Article
LanguageEnglish
Published 31.12.2015
Subjects
Mathematics - Probability
Physics - Fluid Dynamics
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Summary:We construct a new subgrid scale (SGS) stress model for representing the small scale effects in large eddy simulation (LES) of incompressible flows. We use the covariance tensor for representing the Reynolds stress and include Clark's model for the cross stress. The Reynolds stress is obtained analytically from Cinlar random velocity field, which is based on vortex structures observed in the ocean at the subgrid scale. The validity of the model is tested with turbulent channel flow computed in OpenFOAM. It is compared with the most frequently used Smagorinsky and one-equation eddy SGS models through DNS data.
DOI:10.48550/arxiv.1601.03075