Computation of turbulent rotating channel flow with an algebraic Reynolds stress modelAn Algebraic Reynolds Stress Model has been implemented to modify the Kolmogorov-Prandtl eddy viscosity relation to produce an anisotropic turbulence model. The eddy viscosity relation becomes a function of the local turbulent production to dissipation ratio and local turbulence/rotation parameters. The model is used to predict fully-developed rotating channel flow over a diverse range of rotation numbers. In addition, predictions are obtained for a developing channel flow with high rotation. The predictions are compared with the experimental data available. Good predictions are achieved for mean velocity and wall shear stress over most of the rotation speeds tested. There is some prediction breakdown at high rotation (rotation number greater than .10) where the effects of the rotation on turbulence become quite complex. At high rotation and low Reynolds number, the laminarization on the trailing side represents a complex effect of rotation which is difficult to predict with the described models.
Document ID
19860037944
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Warfield, M. J. (Pennsylvania State Univ. University Park, PA, United States)
Lakshminarayana, B. (Pennsylvania State University University Park, United States)