Abstract:
We report an experimental method for inhibiting vortex shedding generated by the Bénard von Kármán 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 Bénard-von Kármán 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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Received 2 August 1999
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Hernández, R., Baudet, C. & Fauve, S. Controlling the Bénard-von Kármán instability in the wake of a cylinder by driving the pressure at the front stagnation point. Eur. Phys. J. B 14, 773–781 (2000). https://doi.org/10.1007/s100510051088
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DOI: https://doi.org/10.1007/s100510051088