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Journal Articles Comptes Rendus Mécanique Year : 2012

On the scaling of drag reduction by reconfiguration in plants

Abstract

Slender flexible structures such as plants are deformed by external flow. When the deformation is significant, this results in a reduction of drag. We give a theoretical value of the exponent that characterizes the drag law. This theoretical value is shown to compare well with experimental data on a very large variety of plants. It is found that reconfiguration affects more the local bending stress than the total drag. Moreover, a non-linearity in the bending law does not affect significantly the mechanism. © 2011 Académie des sciences.

Dates and versions

hal-00994485 , version 1 (26-05-2014)

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Emmanuel de Langre, Alvaro Gutierrez, Julia Cossé. On the scaling of drag reduction by reconfiguration in plants. Comptes Rendus Mécanique, 2012, 340 (1-2), pp.35-40. ⟨10.1016/j.crme.2011.11.005⟩. ⟨hal-00994485⟩
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