Abstract
We report an experimental method for inhibiting vortex shedding generated by the Benard von Karman instability (BvK) in the wake of a cylinder. We show that monitoring the pressure at the front stagnation point of a circular cylinder can completely suppress the Benard-von Karman instability for Reynolds numbers in the range 48.5<Re<150. We then study some properties of the BvK instability in the presence of suction at the front stagnation point and mention that this method can be used to generate well-controlled localized vortical structures in the form of vortex pairs.
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