Abstract
A Finite-Volume method to solve the Navier-Stokes equations in an accelerated reference system was applied in order to calculate flow fields around dimensionally stable, moving structures. The two-dimensional velocity field and the force history induced by the harmonic oscillation of a circular cylinder in water at rest at Reynolds number Re=100 and Keulegan-Carpenter number KC=5 was computed accurately in time. Computations have been performed applying different grid levels and time steps. Stable, symmetric and periodic flow patterns occurred showing good agreement with time averaged LDA measurements providing phase resolution of 1 degree.
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