Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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EFFECTS OF INFLOW ANGLE ON LAMINAR FLOW PAST A TRIANGULAR CYLINDER

삼각봉을 지나는 층류유동에 대한 입구유동각도 변화의 영향

  • 박태선 (경북대학교 기계공학부)
  • Received : 2011.05.31
  • Accepted : 2011.09.08
  • Published : 2011.09.30
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Abstract

Laminar Flow over an equilateral triangular cylinder is studied for several inflow angles. Under an uniform flow of $Re_d$=50,75,100,125,150, the triangular cylinder is rotated by ${\theta}$=$0^{\circ}$,$15^{\circ}$,$30^{\circ}$,$45^{\circ}$,$60^{\circ}$,$75^{\circ}$,$90^{\circ}$,$105^{\circ}$. The governing equations are solved by the PISO algorithm based on the finite volume method of the unstructured grid system. The effects of the inflow angle on the vortex-shedding flows are investigated. The Strouhal number shows a minimum at ${\theta}$=$60^{\circ}$. It is closely related to the variation of pressure and flow structure induced by the movement of separation points.

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References

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