Falling cards and flapping flags: understanding fluid–solid interactions using an unsteady point vortex model |
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| Authors: | Sébastien Michelin Stefan G Llewellyn Smith |
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| Institution: | 1.Department of Mechanical and Aerospace Engineering,Jacobs School of Engineering, UCSD,La Jolla,USA;2.Ecole Nationale Supérieure des Mines de Paris,Paris Cedex 06,France |
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| Abstract: | A reduced-order model for the two-dimensional interaction of a sharp-edged solid body and a high-Reynolds number flow is presented, based on the inviscid representation of the solid’s wake as point vortices with unsteady intensity. This model is applied to the fall of a rigid card in a fluid and to the flapping instability of a flexible membrane forced by a parallel flow. |
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