Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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Investigation of the Vortex Shedding with the Shear Building

전단건물을 이용한 와류발산현상 파악

  • Lee, Sang-Ho (Professor of Civil and Environmental Engineering, Dankook University)
  • 이상호 (단국대학교 토목환경공학과)
  • Received : 2010.04.05
  • Accepted : 2010.05.13
  • Published : 2010.05.31
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Abstract

To study the vortex induced vibrations the wind tunnel and the two story shear building were designed and built. The wind tunnel was designed to generate the wind speed up to 24 m/s, and the building was designed to have the two lowest natural frequencies within the range of the vortex frequencies generated by the wind tunnel. The resonance behaviors by the locking-on phenomena were observed during the wind tunnel tests of the shear building with the cylinder attached. From the locking-on phenomena observed it is found that the effects of the amplitudes and the frequencies of the cylinders should be considered on the forces generated by the vortex shedding.

와류발산현상을 파악하기 위한 풍동과 2층 전단건물을 제작하였다. 풍동은 풍속이 24m/s까지 구현되도록 제작하였으며, 전단건물은 고유 진동수가 풍동에서 구현 할 수 있는 와류 진동수 범위에 속하도록 설계되었다. 원통형 실린더를 부착한 전단건물의 풍동실험을 수행하여 locking-on 현상에 의한 공명현상을 관찰하였다. 또한 관찰된 결과로부터 와류발산하중은 실린더의 진폭과 진동수의 영향이 작용하는 것을 파악하였다.

Keywords

References

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