چکیده مقاله
The commonly used linear k ε turbulence model is shown to be incapable of accurate prediction of turbulent flows where non isotropy is dominant One example of non isotropic flows which is due to stratification and consequently variation of density through vertical layers is saline water flow In this paper a nonlinear k ε turbulence model firstly presented by Speziale 1986 is implemented in the existing hydrodynamic model The hydrodynamic model solves the fully nonlinear Navier Stokes equations based on an ALE Arbitrary Lagrangian Eulerian description The model is an extension to WISE Width Integrated Stratified Environments 2DV numerical model, originally developed by Hejazi 2004 The simulation results have been compared with the experimental data and have shown acceptable agreements The predictions are also compared with the results of the original model employing a standard buoyant k ε turbulence model, which show the advantage of the new model in prediction of non isotropic flows
کلیدواژهها
نویسندگان
Hadi Shams Nia
Msc Student, K N Toosi University of Technology, Tehran, IRAN
Kourosh Hejazi
Assistant Prof , K N Toosi University of Technology, Tehran, IRAN
شیوه ارجاع
Shams Nia, Hadi and Hejazi, Kourosh,1391,2DV Numerical Modeling of Stratified Saline Water Using a Nonlinear k-ε Model,9th International Congress on Civil Engineering,Isfahan
ارائهشده در
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