Journal of the Korean Society of Visualization (한국가시화정보학회지)

The Korean Society of Visualization (한국가시화정보학회)
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Prevent Air-core During Draining with Semi Spherical Mesh

반구형 그물망을 이용한 배수시 생성되는 공기 기둥 억제 연구

  • 한은수 (경북대학교 기계공학부 대학원) ;
  • 박일석 (경북대학교 기계공학부) ;
  • 손창현 (경북대학교 기계공학부)
  • Received : 2011.09.15
  • Accepted : 2011.09.29
  • Published : 2011.09.30
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Abstract

When draining takes place through an axially located drain port in a cylindrical tank without any prevent, a vortex with an air core occurs. In this study, semi spherical concave and convex meshes with different size inner hole are used to find the air core can suppress. The study is carried out with different values of inner hole of mesh and different install direction of semi spherical mesh using PIV and measured velocity distribution. By providing a mesh, the air core can be prevented, even if the ratio of inner hole of mesh and diameter of cylinder is around 0.66. The experimental results show that a convex mesh type is more effective to suppress the air core generation than a concave mesh type.

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References

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