Wind and Structures

  • 제34권1호
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  • Pages.101-113
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  • 2022
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  • 1226-6116(pISSN)
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  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

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Experimental characterization of the lateral and near-wake flow for the BARC configuration

  • 투고 : 2021.04.27
  • 심사 : 2021.07.11
  • 발행 : 2022.01.25
⟨ 이전 논문 다음 논문 ⟩

초록

We experimentally investigate the high-Reynolds flow around a rectangular cylinder of aspect ratio 5:1. This configuration is the object of the international BARC benchmark. Wind tunnel tests have been carried out for the flow at zero angle of attack and a Reynolds number, based on the crossflow cylinder length and on the freestream velocity, equal, to 40 000. Velocity measurements are obtained by using hot-wire anemometry along 50 different cross-flow traverses on the cylinder side and in the near wake. Differential pressure measurements are acquired on multiple streamwise sections of the model. The obtained measurements are in a good agreement with the state-of-the-art experiments. For the first time among the several contributions to the BARC benchmark, detailed flow measurements are acquired in the region near the cylinder side and in the near-wake flow. The edges and the thickness of the shear layers detaching from the upstream edges are derived from velocity measurements. Furthermore, we compute the flow frequencies characterizing the roll-up of the shear layers, the evolution of vortical structures near the cylinder side and the vortex shedding in the wake.

키워드

과제정보

The authors wish to thank Guido Buresti for his precious suggestions in the definition of the experimental set-up. Thanks are also due to the technical staff of the Department of Civil and Industrial Engineering (Aerospace Division) for the manufacturing of the wind tunnel model and to Paolo Neri for the measurement of the radius of curvature of the upstream edges.

참고문헌

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