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

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Experimental Study of Reynolds Number Effects on Heat/Mass Transfer and Pressure Drop Characteristics in a Rotating Smooth Duct

매끈한 벽면을 가진 회전덕트 내 레이놀즈 수에 따른 열/물질전달 및 압력강하 특성 연구

  • Kim, Kyung-Min (Graduate School of Mechanical Engineering, Yonsei University) ;
  • Park, Suk-Hwan (Graduate School of Mechanical Engineering, Yonsei University) ;
  • Lee, Dong-Hyun (Graduate School of Mechanical Engineering, Yonsei University) ;
  • Cho, Hyung-Hee (School of Mechanical Engineering, Yonsei University)
  • 김경민 (연세대학교 대학원 기계공학부) ;
  • 박석환 (연세대학교 대학원 기계공학부) ;
  • 이동현 (연세대학교 대학원 기계공학부) ;
  • 조형희 (연세대학교 기계공학부)
  • Published : 2006.11.10
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Abstract

The present study has been conducted to investigate the effects of Reynolds number on heat/mass transfer and pressure drop characteristics in a rotating smooth two-pass duct. For stationary cases, the heat/mass transfer and pressure drop Is decreased on turning region of both leading and trailing surfaces as Reynolds number increases. For rotating cases, increment of Reynolds number affects differently the heat/mass transfer and pressure drop on the leading and trailing surfaces. In the first pass, for example, the heat/mass transfer on the leading surface is greatly increased, though the heat/mass transfer on the trailing surface is almost the same. The reason is that effect of the main flow is more dominant than effect of secondary flow. In particular, it gave decrement of the heat/mass transfer and the pressure drop at turning region and upstream region of second pass for both non-rotating and rotating cases.

Keywords

References

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