대한기계학회논문집B (Transactions of the Korean Society of Mechanical Engineers B)

  • 제26권2호
  • /
  • Pages.278-287
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  • 2002
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  • 1226-4881(pISSN)
  • /
  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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이단 원추형 오리피스를 지나는 압력장과 유동장에 관한 수치적 연구

Numerical Analysis for the Pressure and Flow Fields past a Two-Staged Conical Orifice

  • Kim, Yeon-Su (Graduate School of Chonnam National Universityisy) ;
  • Kim, Yu-Gon (Dept.of Mechanical Engineering, Chonnam National Universityisy)
  • 발행 : 2002.02.01
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초록

The objective of the paper was to calculate the pressure drop and to investigate the recirculation region of the conical orifices used in Kwang-yang Iron & Steel Company. The flow field with water used as a working fluid was the turbulent flow for Reynolds number of 2$\times$10$^4$. The effective parameters fur the pressure drop and the recirculation region were the conical orifice\`s inclined angle ($\theta$) against the wall, the interval(S) between orifices, the relative angle of rotation($\alpha$) of the orifices, the shape of the orifice's hole(circle, rectangle, triangle) having the same area, the number(N) of the orifice's holes having the same mass flow rate, and the thickness(t) of the orifices. It was fecund that the shape of the orifice's hole, the number of the orifice's holes and the thickness of the orifice affected the total pressure drop a lot and that the conical orifice's inclined angle against the wall, the relative angle of rotation of the orifices, the number of the orifice's holes and the thickness of the orifices affected the center location of the recirculation region. The PISO algorithm with FLUENT code was employed to analyze the flow field.

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참고문헌

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