Generation of sound due to laminar flow past a circular cylinder performing rotary
oscillations has been studied using a direct numerical simulation approach. Two-
dimensional, unsteady, compressible Navier-Stokes equations are directly solved using
high resolution, physical dispersion relation preserving schemes. In this work, modifications
in the flow induced acoustic noise due to imposed rotary oscillations have been discussed in
detail. Simulations have been performed for a Reynolds number Re= 150 and a Mach …