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Journal Articles Physical Review Letters Year : 2020

Generation of Atmospheric Turbulence with Unprecedentedly Large Reynolds Number in a Wind Tunnel

Lars Neuhaus
  • Function : Author
Michael Hölling
  • Function : Author
Joachim Peinke

Abstract

Generating laboratory flows resembling atmospheric turbulence is of prime importance to study the effect of wind fluctuations on objects such as buildings, vehicles, or wind turbines. A novel driving of an active grid following a stochastic process is used to generate velocity fluctuations with correlation lengths, and, thus, integral scales, much larger than the transverse dimension of the wind tunnel. The combined action of the active grid and a modulation of the fan speed allows one to generate a flow characterized by a four-decade inertial range and an integral scale Reynolds number of 2 × 10 7 .
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Dates and versions

hal-02964394 , version 1 (12-10-2020)

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Lars Neuhaus, Michael Hölling, Wouter J. T. Bos, Joachim Peinke. Generation of Atmospheric Turbulence with Unprecedentedly Large Reynolds Number in a Wind Tunnel. Physical Review Letters, 2020, 125 (15), pp.154503. ⟨10.1103/PhysRevLett.125.154503⟩. ⟨hal-02964394⟩
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