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      A tree swaying in a turbulent wind: a scaling analysis.

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      Journal of biological physics

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          Abstract

          A tentative scaling theory is presented of a tree swaying in a turbulent wind. It is argued that the turbulence of the air within the crown is in the inertial regime. An eddy causes a dynamic bending response of the branches according to a time criterion. The resulting expression for the penetration depth of the wind yields an exponent which appears to be consistent with that pertaining to the morphology of the tree branches. An energy criterion shows that the dynamics of the branches is basically passive. The possibility of hydrodynamic screening by the leaves is discussed.

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          Author and article information

          Journal
          J Biol Phys
          Journal of biological physics
          1573-0689
          0092-0606
          Jan 2015
          : 41
          : 1
          Affiliations
          [1 ] Lorentz Institute for Theoretical Physics, University of Leiden, Niels Bohrweg 2 2333, CA, Leiden, The Netherlands, odijktcf@online.nl.
          Article
          10.1007/s10867-014-9361-0
          4298005
          25169247
          e4580631-2694-4fc8-b419-c180d987b22d
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