Wind and Structures

Techno-Press (테크노프레스)
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Effect of a vertical guide plate on the wind loading of an inclined flat plate

  • Chung, Kung-Ming (Aerospace Science and Technology Research Center, National Cheng Kung University) ;
  • Chou, Chin-Cheng (Department of Aeronautics and Astronautics, National Cheng Kung University) ;
  • Chang, Keh-Chin (Department of Aeronautics and Astronautics, National Cheng Kung University) ;
  • Chen, Yi-Jun (Department of Aeronautics and Astronautics, National Cheng Kung University)
  • Received : 2012.09.14
  • Accepted : 2013.08.17
  • Published : 2013.11.25
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Abstract

Wind tunnel experiments were performed to study the wind loads on an inclined flat plate with and without a guide plate. Highly turbulent flow, which corresponded to free-stream turbulence intensity on the flat roof of low-rise buildings, was produced by a turbulence generation grid at the inlet of the test section. The test model could represent a typical solar collector panel of a solar water heater. There are up-stream movements of the separation bubble and side-edge vortices, more intense fluctuating pressure and a higher bending moment in the turbulent flow. A guide plate would result in higher lift coefficient, particularly with an increased projected area ratio of a guide plate to an inclined flat plate. The value of lift coefficient is considerably lower with increased free-stream turbulent intensity.

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References

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