Drag reduction, from bending to pruning
Drag reduction, from bending to pruning
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减少阻力，从弯曲到修剪
DOI：
10.1209/0295-5075/108/48002
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
E. D. Langre
中科院分区：
文献类型：
--
作者：
Diego Lopez;Christophe Eloy;S'ebastien Michelin;E. D. Langre
大多数植物和底栖生物已经进化出有效的重组机制来抵抗流动诱导的负载。这些机制可分为弯曲机制和修剪机制，在弯曲机制中，植物通过弹性变形来减小其风帆面积；在修剪机制中，通过结构的部分破坏来减少载荷。在这封信中，我们通过使用理想化的模型表明，这两种机制，或者事实上，这两种机制的任何组合，在陆地和水生植被所经历的阻力方面产生了类似的相对减少。
Most plants and benthic organisms have evolved efficient reconfiguration mechanisms to resist flow-induced loads. These mechanisms can be divided into bending, in which plants reduce their sail area through elastic deformation, and pruning, in which the loads are decreased through partial breakage of the structure. In this letter, we show by using idealized models that these two mechanisms or, in fact, any combination of the two, yield comparable relative reduction in the drag experienced by terrestrial and aquatic vegetation.