Comparisons of Two Viscous Models for Vortex Methods in Parallel Computation.

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Abstract

A parallel implementation of vortex methods dealing with unsteady viscous flows on a distributed computing environment through Parallel Virtual Machine (PVM) is reported in this paper. We test the recently developed diffusion schemes of vortex methods. We directly compare the particle strength exchange method with the vorticity distribution method in terms of their accuracy and computational efficiency. Comparisons between both viscous models described are presented for the impulsively started flows past a circular cylinder at Reynolds number 60. We also present the comparisons of both methods in their parallel computation efficiency and speed-up ratio.

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