Wind and Structures

  • 제34권1호
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  • Pages.29-42
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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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Experimental analysis of the aerodynamic characteristics of a rectangular 5:1 cylinder using POD

  • Cardenas-Rondon, Juan A. (Instituto Universitario "Ignacio Da Riva" (IDR/UPM), Universidad Politecnica de Madrid) ;
  • Ogueta-Gutierrez, Mikel (Instituto Universitario "Ignacio Da Riva" (IDR/UPM), Universidad Politecnica de Madrid) ;
  • Franchini, Sebastian (Instituto Universitario "Ignacio Da Riva" (IDR/UPM), Universidad Politecnica de Madrid) ;
  • Gomez-Ortega, Omar (Instituto Universitario "Ignacio Da Riva" (IDR/UPM), Universidad Politecnica de Madrid)
  • 투고 : 2021.03.26
  • 심사 : 2021.06.21
  • 발행 : 2022.01.25
⟨ 이전 논문 다음 논문 ⟩

초록

Following the BARC initiative, wind tunnel measurements have been performed on a 5:1 rectangular cylinder. Pressure distribution has been measured in several sections, checking the two-dimensionality of the flow around the model. Mean values compare well with previous data. These measurements have been processed using the standard Proper Orthogonal Decomposition (POD) and the snapshot POD to obtain phase-resolved cycles. This decomposition has been used to analyze the characteristics of the flow around the cylinder, in particular, the behavior of the recirculation bubble in the upper/lower surfaces. The effect of the angle of attack, the turbulence intensity and the Reynolds number has been studied. First and second modes extracted from POD have been found to be related to the reattachment of the flow in the upper surface. Increasing the angle of attack is related to a delay in the reattachment position, while an increase in turbulence intensity makes the reattachment point to move towards the windward face.

키워드

과제정보

The authors would like to gratefully acknowledge the support of the Ministry of Science, Innovation and Universities of Spain (Ministerio de Ciencia, Innovacion y Universidades, project reference: ENE2016-80107-R), which partially financed this work. Additionally, the authors would like to acknowledge the assistance provided by Jose Javier Garcia Aguilar carrying out the wind tunnel tests and the IDR/UPM carpentry team for the manufacture and assembly of the model.

참고문헌

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