Abstract
Unsteady viscous flows past blunt bodies are simulated at the Reynolds numbers of 100, 200, 300, and 400. This research focuses on understanding the effects of the Reynolds numbers and blunt body shapes on the unsteady lift and drag forces. The incompressible Navier-Stokes flow solver, which employs the SIMPLER method in the two-dimensional body-intrinsic orthogonal curvilinear coordinate system, is verified by comparing the present numerical results with currently available experimental and numerical data. In conclusion, it is observed that the body shapes and the Reynolds numbers affect significantly the frequencies of the force oscillations as well as the mean values and the amplitudes of the drag and lift force oscillations.
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