Wind and Structures

Techno-Press (테크노프레스)
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Effects of turbulent boundary layer thickness on flow around a low-rise rectangular prism

  • Kim, Kyung Chun (School of Mechanical Engineering, Pusan National University) ;
  • Ji, Ho Seong (School of Mechanical Engineering, Pusan National University) ;
  • Seong, Seung Hak (School of Mechanical Engineering, Pusan National University)
  • Received : 2005.01.18
  • Accepted : 2005.08.25
  • Published : 2005.12.25
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Abstract

The effects of upstream velocity profiles on the flow around a low-rise rectangular prism submerged in a turbulent boundary layer have been investigated. Three different boundary layer profiles are generated, which are characterized by boundary layer height, displacement thickness, and momentum thickness. Flow characteristics variations caused by the different layers such as those in turbulent kinetic energy distribution and locations of re-circulating cavities and reattachment points have been precisely measured by using a PIV (Particle Image Velocimetry) technique. Observations were made in a boundary layer wind tunnel at $Re_H$=7900, based on a model height of 40 mm and a free stream velocity of 3 m/s with 15 - 20% turbulence intensity.

Keywords

References

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Cited by

  1. Flow structures around a three-dimensional rectangular body with ground effect vol.11, pp.5, 2008, https://doi.org/10.12989/was.2008.11.5.345