Journal of Power System Engineering (동력기계공학회지)

The Korean Society for Power System Engineering (한국동력기계공학회)
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Effect of Rib Arrangement on Heat Transfer in the Divergent Channel

확대 채널에서 리브 배열이 열전달에 미치는 효과

  • Lee, Myung-Sung (Gyeongnam Institute for Regional Program Evaluation) ;
  • Lee, Gyeong-Ju (Department of Mechanical & System Engineering, Gyeongsang National University) ;
  • Kim, Sang-Moon (Department of Mechanical & System Engineering, Gyeongsang National University) ;
  • Min, Se-Chan (Department of Mechanical & System Engineering, Gyeongsang National University) ;
  • Bae, Jae-Moon (Department of Mechanical & System Engineering, Gyeongsang National University) ;
  • Hwang, Jun-Su (Department of Mechanical & System Engineering, Gyeongsang National University) ;
  • Park, Cheol-O (Department of Mechanical & System Engineering, Gyeongsang National University) ;
  • Kim, Dong-Chan (Department of Mechanical & System Engineering, Gyeongsang National University) ;
  • Jung, Jung-Hyeon (Department of Mechanical & System Engineering, Gyeongsang National University) ;
  • Ahn, Soo-Whan (Department of Mechanical & System Engineering, Gyeongsang National University)
  • 이명성 (경남지역사업평가단) ;
  • 이경주 (경상대학교 해양산업 연구 소 기계시스템공학과) ;
  • 김상문 (경상대학교 해양산업 연구 소 기계시스템공학과) ;
  • 민세찬 (경상대학교 해양산업 연구 소 기계시스템공학과) ;
  • 배재문 (경상대학교 해양산업 연구 소 기계시스템공학과) ;
  • 황준수 (경상대학교 해양산업 연구 소 기계시스템공학과) ;
  • 박철오 (경상대학교 해양산업 연구 소 기계시스템공학과) ;
  • 김동찬 (경상대학교 해양산업 연구 소 기계시스템공학과) ;
  • 정정현 (경상대학교 해양산업 연구 소 기계시스템공학과) ;
  • 안수환 (경상대학교 해양산업 연구 소 기계시스템공학과)
  • Received : 2017.06.09
  • Accepted : 2017.08.28
  • Published : 2017.10.31
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Abstract

The effects of the different rib geometries such as V-shaped continuous (case A), parallel broken (case B), and V-shaped broken (case C) ribs on the heat transfer and pressure drops in a divergent channel with $45^{\circ}$ inclined ribs on one wall or two walls are checked out. The top and bottom walls are adiabatic; two side walls are uniformly heated in the divergent rectangular channel. The tested Reynolds numbers are ranged from 22,000 to 75,000. The channel with two opposite walls inclined only has the length of test section of 1 m and the channel divergence ratio of $D_{ho}/D_{hi}=1.49$, corresponding to $1.43^{\circ}$ inclined walls. The results show in the identical pumping power that the V-shaped continuous rib (case A) with two ribbed walls is the greatest, but the parallel broken rib (case B) with one ribbed wall is the worst in the thermal performance.

Keywords

References

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