Abstract
In this paper, the turbulent fluid flow over a single forward facing step with inclined angle θ is studied numerically. The continuity and Navier-Stokes equations are solved numerically using CFD techniques. The standard k−ε turbulence model is used to calculate the turbulence fluctuations. Because of the flow geometry, the governing equations are transformed in the computational domain and the discretized forms of these equations are obtained by finite volume approach. Conformal mapping is used to generate an orthogonal grid by the Schwarz-Christoffel transformation. In this study, the effects of geometrical parameters including step length and inclined angle θ on the fluid flow are examined. The present results reveal that the hydrodynamic behavior of the flow is strongly dependent on step length and inclined angle θ and especially the extension of recirculation zones varies with these parameters.
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