Abstract
The main objective of the present study is to evaluate the applicability of the standard k-ε turbulence model in engineering practice in the subcritical flow regimes. Also, examine the influence of Reynolds number variation on the flow characteristics are considered. The numerically simulation of the flow characteristics over a smooth uniform cross section circular cylinder with a diameter of 50 mm and 400mm span, placed horizontally perpendicular to the main flow direction at four different Reynolds numbers (Re) based on the cylinder diameter (D) and the undisturbed free-stream velocity in the range Re=(0.5,0.7,0.85 and 1.0) ×105 were performed. The simulated results of the flow properties such as flow stream velocity components, pressure distribution contours, pressure coefficient (Cp) and drag coefficient(CD) around the circular cylinder were consider. The numerical analysis obtain by CFD using ANSYS FLUNET (19.1) with K-ε turbulence model, for solving the 2D (ANSE) governing equation for tested model were consider. The present simulation results validation is obtained by comparing the converged results with published numerical and experimental data.
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