Journal of Power System Engineering (동력기계공학회지)

The Korean Society for Power System Engineering (한국동력기계공학회)
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Analysis of the turbulent flow on the periodically arranged semi-circular ribs in a rectangular channel

사각채널 내 주기적으로 배열된 반원 리브 영향의 유동해석

  • 이경환 (경상대학교 대학원 정밀기계공학과) ;
  • 나인 (경상대학교 대학원 정밀기계공학과) ;
  • 최순호 ((주)DHP Engineering) ;
  • 정효민 (경상대학교 에너지기계공학과) ;
  • 정한식 (경상대학교 에너지기계공학과)
  • Received : 2010.10.12
  • Accepted : 2011.04.12
  • Published : 2011.04.30
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Abstract

The flow characteristics on the periodically arranged semi-circular ribs in a rectangular channel for turbulent flow have been investigated numerically. The aspect ratio of the rectangular channel was AR=5, the rib height to hydraulic diameter ratio was 0.07 and rib height to channel height ratio was e/H=0.117. The v2-f turbulence model and SST k-${\omega}$ turbulence model were used to find the flow characteristics of near the wall which are suited for realistic phenomena. The numerical analysis results show turbulent flow characteristics and pressure drop at the near the wall as observed experimentally. The results predict that turbulent kinetic energy(k) is closely relative to the diffusion of recirculation flow, and v2-f turbulence model simulation results have a good agreement with experimental.

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References

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