Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Effect of Rib Pitch on Heat Transfer and Friction Factor in a Two Wall Divergent Channel

2벽면 확대 사각채널에서 리브 피치가 열전달과 마찰계수에 미치는 효과

  • Ahn, Soo Whan (Department of Mechanical and System Engineering, Institute of Marine Industry, Gyeongsang National University) ;
  • Lee, Myung Sung (Department of Mechanical and System Engineering, Graduate School, Gyeongsang National University) ;
  • Jeong, Seong Soo (Department of Mechanical and System Engineering, Graduate School, Gyeongsang National University) ;
  • Bae, Sung Taek (Korea Institute of Industrial Technology)
  • 안수환 (경상대학교 해양산업연구소 기계시스템공학과) ;
  • 이명성 (경상대학교 대학원 기계시스템공학과) ;
  • 정성수 (경상대학교 대학원 기계시스템공학과) ;
  • 배성택 (한국생산기술연구원)
  • Received : 2014.01.16
  • Accepted : 2014.03.04
  • Published : 2014.04.10
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Abstract

Experimental investigations of the heat transfer and friction factors in the ribbed divergent rectangular channel with the channel exit hydraulic diameter to inlet hydraulic diameter ratio of 1.16 were performed. The surface heaters were mounted onto the two opposite walls. The main experimental parameter is the ratio of rib pitch (p) to height (e), at which the ratios (p/e) of 6, 10, and 14 are considered in the channel with ribs on one wall only. The straight ribbed square channel is also considered as a comparison. The major findings are that the ratio of p/e = 6 shows the highest values in the heat transfer and the ratio of p/e = 10 indicates the greatest friction factor in the ribbed divergent channel. Editor's note:No major changes or corrections needed. Well written.

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References

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