NUMERICAL-SIMULATION OF A CYLINDER IN UNIFORM-FLOW - APPLICATION OF AVIRTUAL BOUNDARY METHOD

In this study, a virtual boundary technique is applied to the numerica l simulation of stationary and moving cylinders in uniform flow. This approach readily allows the imposition of a no-slip boundary within th e flow field by a feedback forcing term added to the momentum equation s. in the present work, this technique is used with a high-order finit e difference method, effectively eliminating spurious oscillations cau sed by the feedback forcing when used with spectrally discretized flow solvers. Very good agreement is found between the present calculation s and previous computational and experimental results for steady and t ime-dependent flow at low Reynolds numbers. (C) 1996 Academic Press, I nc.