Numerical simulation and experiments of a control method to suppress the Bénard von Kármán instability

Abstract

We report both two-dimensional numerical simulations and experimental results that confirm the robustness of a new method for inhibiting vortex shedding associated to the Benard-von Karman (BvK) instability in the wake of a cylinder. Using the SIMPLER algorithm on a 2D channel, we solve the Navier-Stokes equations and we show that pressure suction at the front stagnation point of a circular cylinder, modelled here through a point sink located at the front stagnation point, can completely suppress the Benard-von Karman instability for super-critical Reynolds numbers. Comparison with recent experimental results are in close agreement.