Wind and Structures

  • 제11권5호
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  • Pages.345-359
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  • 2008
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  • 1226-6116(pISSN)
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  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
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Flow structures around a three-dimensional rectangular body with ground effect

  • Gurlek, Cahit (Cukurova University, Faculty of Engineering and Architecture, Department of Mechanical Engineering) ;
  • Sahin, Besir (Cukurova University, Faculty of Engineering and Architecture, Department of Mechanical Engineering) ;
  • Ozalp, Coskun (Cukurova University, Faculty of Engineering and Architecture, Department of Mechanical Engineering) ;
  • Akilli, Huseyin (Cukurova University, Faculty of Engineering and Architecture, Department of Mechanical Engineering)
  • 투고 : 2007.10.16
  • 심사 : 2008.07.21
  • 발행 : 2008.10.25
⟨ 이전 논문 다음 논문 ⟩

초록

An experimental investigation of the flow over the rectangular body located in close proximity to a ground board was reported using the particle image velocimetry (PIV) technique. The present experiments were conducted in a closed-loop open surface water channel with the Reynolds number, $Re_H=1.2{\times}10^4$ based on the model height. In addition to the PIV measurements, flow visualization studies were also carried out. The PIV technique provided instantaneous and time-averaged velocity vectors map, vorticity contours, streamline topology and turbulent quantities at various locations in the near wake. In the vertical symmetry plane, the upperbody flow is separated from the sharp top leading edge of the model and formed a large reverse flow region on the upper surface of the model. The flow structure downstream of the model has asymmetric double vortices. In the horizontal symmetry plane, identical separated flow regions occur on both vertical side walls and a pair of primary recirculatory bubbles dominates the wake region.

키워드

참고문헌

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피인용 문헌

  1. PIV studies around a bus model vol.38, 2012, https://doi.org/10.1016/j.expthermflusci.2011.11.014
  2. Effect of crosswinds on aerodynamic characteristics around a generic train model 2018, https://doi.org/10.1080/23248378.2018.1424573
  3. Particle image velocimetry studies around a rectangular body close to a plane wall vol.21, pp.3, 2010, https://doi.org/10.1016/j.flowmeasinst.2010.04.003
  4. Experimental and numerical studies of the flow around the Ahmed body vol.17, pp.5, 2013, https://doi.org/10.12989/was.2013.17.5.515
  5. Mesh size refining for a simulation of flow around a generic train model vol.24, pp.3, 2008, https://doi.org/10.12989/was.2017.24.3.223