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Article Dans Une Revue EPL - Europhysics Letters Année : 2001

Capillary-gravity wave resistance in ordinary and magnetic fluids

Résistance de vague d'ondes gravito-cappilaires dans les fluides ordianires et magnétiques

Résumé

Wave resistance is the drag force associated to the emission of waves by a moving disturbance at a free fluid surface. In the case of capillary-gravity waves it undergoes a transition from zero to a finite value as the speed of the disturbance reaches a certain critical value. For the first time an experiment is designed in order to obtain the capillary-gravity wave resistance as a function of speed. The effect of viscosity is explored, and a magnetic fluid is used to extend the available range of critical speeds. The threshold values are in good agreement with the proposed theory. Contrary to the theoretical model, however, the measured wave resistance reveals a non-monotonic speed dependence after the threshold.

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hal-03195298 , version 1 (10-04-2021)

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Julien Browaeys, Jean-Claude Bacri, Régine Perzynski, Mark Shliomis. Capillary-gravity wave resistance in ordinary and magnetic fluids. EPL - Europhysics Letters, 2001, 53 (2), pp.209-215. ⟨10.1209/epl/i2001-00138-7⟩. ⟨hal-03195298⟩
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