de Langre, Emmanuel and Gutierrez, Alvaro and Cossé, Julia (2012) On the scaling of drag reduction by reconfiguration in plants. Comptes Rendus Mecanique, 340 (1-2). pp. 35-40. ISSN 1631-0721 http://resolver.caltech.edu/CaltechAUTHORS:20120327-082718369
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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.
|Additional Information:||© 2011 Académie des sciences. Published by Elsevier Masson SAS. Available online 30 December 2011. The authors gratefully acknowledge the help of A. Koizumi and S. Puijalon who provided detailed data from their experiments. Julia Cossé was funded by the Caltech-Ecole polytechnique Dual Degree program in Fluid mechanics.|
|Subject Keywords:||Drag; Elasticity; Plates; Beams; Biomechanics; Plants|
|Official Citation:||Emmanuel de Langre, Alvaro Gutierrez, Julia Cossé, On the scaling of drag reduction by reconfiguration in plants, Comptes Rendus Mécanique, Volume 340, Issues 1–2, January–February 2012, Pages 35-40, ISSN 1631-0721, 10.1016/j.crme.2011.11.005. (http://www.sciencedirect.com/science/article/pii/S1631072111001914)|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Ruth Sustaita|
|Deposited On:||27 Mar 2012 15:47|
|Last Modified:||27 Mar 2012 15:47|
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