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Wave drag on floating bodies. | LitMetric

Wave drag on floating bodies.

Proc Natl Acad Sci U S A

Ladhyx, Unité Mixte de Recherche 7646, Centre National de la Recherche Scientifique-École Polytechnique, 91120 Palaiseau, France.

Published: September 2011

We measure the deceleration of liquid nitrogen drops floating at the surface of a liquid bath. On water, the friction force is found to be about 10 to 100 times larger than on a solid substrate, which is shown to arise from wave resistance. We investigate the influence of the bath viscosity and show that the dissipation decreases as the viscosity is increased, owing to wave damping. The measured resistance is well predicted by a model imposing a vertical force (i.e., the drop weight) on a finite area, as long as the wake can be considered stationary.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3174664PMC
http://dx.doi.org/10.1073/pnas.1106662108DOI Listing

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