Journal of Power System Engineering (동력기계공학회지)

The Korean Society for Power System Engineering (한국동력기계공학회)
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Effect of Inclined Wall Number on Heat Transfer and Friction in the Smooth Channel

매끈한 사각채널에서 경사 벽면 수가 열전달과 마찰에 미치는 효과

  • Lee, Myung-Sung (Dpt of Mechanical & System Engineering, Gyeongsang National University) ;
  • Ahn, Soo-Whan (Dpt of Mechanical & System Engineering. Institute of Marine Industry, Gyeongsang National University)
  • 이명성 (경상대학교 대학원 기계시스템공학과) ;
  • 안수환 (경상대학교 해양산업연구소 기계시스템공학과)
  • Received : 2014.03.20
  • Accepted : 2014.04.28
  • Published : 2014.06.30
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Abstract

The local heat transfer and pressure drop of developed turbulent flows in the smooth convergent/divergent channels with rectangular and square cross-sectional areas along the axial distance have been investigated experimentally. The measurement was conducted within the range of Reynolds numbers from 15,000 to 89,000. The channel hydraulic diameter ratios of 0.67 and 1.49 in the rectangular channel with 2 inclined walls and the ratios 0.75 and 1.33 in the square channel with 4 inclined walls are considered. The comparison showed that among the four channels the square divergent channel has the highest thermal performance at the identical mass flow rate, at the identical pumping power, and at the static pressure drop.

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References

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