Abstract
Turbulent flows over surface-mounted thin and thick ribs are investigated using a new computational method for incompressible recirculating flows. The method employs a differencing scheme which simultaneously satisfies the requirements of low numerical diffusion and positivity of coefficients. The effects of turbulence are modeled by a variant of the k-e turbulence model incorporating curvature corrections. The governing equations are solved by an efficient pressure-implicit split-operator algorithm. The predictions are compared with experimental data and previous calculations. The present results compare satisfactorily with most of the measurements and show a definite improvement over previous results. Nomenclature A = finite difference coefficient Ci,c2,cfji,ak,ffe,K = turbulence constants: 1.44, 1.92, 0.09, 1.0, *?/[(c2-ct)tf ],0.4187
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