Numerical Simulation of a Cylinder in Uniform Flow

In this study, a virtual boundary technique is applied to the numerical simulation of stationary and moving cylinders in uniform flow. This approach readily allows the imposition of a no-slip boundary within the flow field by a feedback forcing term added to the momentum equations. In the present work, this technique is used with a high-order finite difference method, effectively eliminating spurious oscillations caused by the feedback forcing when used with spectrally discretized flow solvers. Very good agreement is found between the present calculations and previous computational and experimental results for steady and time-dependent flow at low Reynolds numbers.

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