Wind and Structures

  • 제9권3호
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  • Pages.245-254
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  • 2006
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  • 1226-6116(pISSN)
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  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Drag reduction of a disk with an upstream rod

  • Zhang, Panfeng (Institute of Fluid Mechanics, Beijing University of Aeronautics & Astronautics) ;
  • Gao, Lei (Institute of Fluid Mechanics, Beijing University of Aeronautics & Astronautics) ;
  • Wang, Jinjun (Institute of Fluid Mechanics, Beijing University of Aeronautics & Astronautics)
  • 투고 : 2005.11.03
  • 심사 : 2006.04.21
  • 발행 : 2006.06.25
⟨ 이전 논문 다음 논문 ⟩

초록

The pressure and drag measurements were carried out in the wind tunnel to investigate the drag reduction of the disk by using an interference rod placed upstream. The results indicate that there is a pair of standing vortices in the front stagnation region of the disk induced by the rod. The standing vortices can decrease the pressure on the disk upwind side; hence it can reduce the drag of the disk. With an increasing rod diameter, the standing vortices are strengthened and more drag reduction can be achieved for the disk. With rod diameter d/D = 0.05 (d, D are the diameters of rod and disk, respectively), the total drag of the disk can be reduced by about 9% compared with that of the bare disk.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China

참고문헌

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피인용 문헌

  1. Numerical simulation of flow around cylinder with an upstream rod in tandem at low Reynolds numbers vol.28, pp.3, 2006, https://doi.org/10.1016/j.apor.2006.08.003
  2. Evaluation of base shield plates effectiveness in reducing the drag of a rough circular cylinder in a cross flow vol.11, pp.5, 2008, https://doi.org/10.12989/was.2008.11.5.377