Abstract
A generalized eddy viscosity model is formulated by using the rotation modified energy spectrum. Rotation and mean shear effects are directly included in the eddy viscosity without the use of the local equilibrium assumption. Since the model is of a general form, additional modifications to the eddy viscosity for non-equilibrium effects are not needed. The formulation also includes modeling vortex stretching and viscous destruction terms of the dissipation rate equation based on the limit of rotating isotropic turbulence at high Reynolds numbers. Since the rotation modified energy spectrum includes the contribution of rotation effects on the dissipation and structure of turbulence, the model coefficients in the dissipation rate equation are also modified. The model is shown to reproduce the rotation effects in isotropic turbulence. The implications of the model and its general applicability for turbulent flows are also addressed.
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© 1999 Springer Science+Business Media Dordrecht
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Thangam, S., Wang, X., Zhou, Y. (1999). Development of A Turbulence Model for Flows with Rotation and Curvature. In: Salas, M.D., Hefner, J.N., Sakell, L. (eds) Modeling Complex Turbulent Flows. ICASE/LaRC Interdisciplinary Series in Science and Engineering, vol 7. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-4724-8_19
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DOI: https://doi.org/10.1007/978-94-011-4724-8_19
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