Comptes Rendus
no. 1-2
On the scaling of drag reduction by reconfiguration in plants
Emmanuel de Langre1  ; Alvaro Gutierrez1, 2 ; Julia Cossé1, 3
1 Department of Mechanics, LadHyX, École polytechnique-CNRS, 91128 Palaiseau, France
2 Universidad Politécnica de Madrid, Plaza Cardenal Cisneros, 38040 Madrid, Spain
3 California Institute of Technology, Pasadena, CA 91125, USA
Comptes Rendus. Mécanique, Volume 340 (2012) no. 1-2, pp. 35-40.

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.

Publié le :
DOI : 10.1016/j.crme.2011.11.005
Mots clés : Drag, Elasticity, Plates, Beams, Biomechanics, Plants
Emmanuel de Langre 1 ; Alvaro Gutierrez 1, 2 ; Julia Cossé 1, 3

1 Department of Mechanics, LadHyX, École polytechnique-CNRS, 91128 Palaiseau, France
2 Universidad Politécnica de Madrid, Plaza Cardenal Cisneros, 38040 Madrid, Spain
3 California Institute of Technology, Pasadena, CA 91125, USA 
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Emmanuel de Langre; Alvaro Gutierrez; Julia Cossé. On the scaling of drag reduction by reconfiguration in plants. Comptes Rendus. Mécanique, Volume 340 (2012) no. 1-2, pp. 35-40. doi : 10.1016/j.crme.2011.11.005. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2011.11.005/

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