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DOI: 10.1615/ICHMT.2009.CONV.990
11 pages

Besma Chebbi
Laboratoire de Mécanique des Fluides, Faculté des Sciences de Tunis

Mounir Bouzaiane
Department of Physics, Faculty of Sciences of Bizerte, Zarzouna, Banzart 7021, Tunisia.

Taieb Lili
University of Tunis El Manar, Faculty of Sciences of Tunis, Laboratory of Fluid Mechanics, Department of Physics, 2092 Tunis, Tunisia


In this work, effects of rotation on the evolution of kinematic and thermal fields in homogeneous sheared turbulence are investigated using second order closure modeling. The Launder-Reece-Rodi models, the Speziale-Sarkar-Gatski model and the Shih-Lumley models are retained for pressure-strain correlation and pressure-temperature correlation. Whereas classic models are retained for time evolution equations of kinematic and thermal dissipation rates. The fourth order Runge-Kutta method is used to resolve three non linear differential systems obtained after modeling. The numerical integration is carried out separately for several values of the dimensionless rotation number R equal to 0, 0.25 and 0.5. The obtained results are compared to the recent results of Direct Numerical Simulations of G.Brethouwer. The results have confirmed the asymptotic equilibrium behaviors of kinematic and thermal dimensionless parameters. Furthermore they have shown that rotation affects not only kinematic field but also thermal field. The coupling between the Speziale-Sarkar-Gatski model and the Launder-Reece-Rodi model is of a big contribution on the prediction of kinematic and thermal fields.

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