Turbulence and Shear Flow Phenomena -1 First International Symposium

ISBN Print: 1-56700-135-1

LARGE EDDY SIMULATION OF TURBULENT PLANE COUETTE FLOW

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Martin J. Pattison Department of Chemical Engineering, University of California, Santa Barbara, CA 93106

Hernan Tinoco Forsmarks Kraftgrupp AE, 74203 Osthammar, Sweden

Robert L. Street Environmental Fluid Mechanics Laboratory Stanford University Stanford, California 94305

Sanjoy Banerjee Department of Chemical Engineering University of California at Santa Barbara, Santa Barbara, California, 93106

Abstrakt

A series of large eddy simulations of plane Couette flow has been performed for Reynolds numbers between 750 and 3750. Three different models were used for the sub-grid scale stresses, and the results were found to be in reasonable agreement with existing data. The results were used to calculate Cμ, the coefficient in the standard k−ε turbulence model. It was found that in the near-wall region, significantly lower values of this coefficient were predicted, compared to correlations based on channel flow. One possible explanation could be that the boundary has a greater influence on the turbulence in the case of Couette flow in which there is no mean pressure gradient.

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