Proceedings of the SAREK Conference (대한설비공학회:학술대회논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Heat Transfer of Array Impinging Jet on Concave Surfaces with Rectangular Fin

사각 핀이 설치된 오목충돌면에서 배열충돌제트의 국소 열전달 특성 고찰

  • Oh, Sang-Hyun (Department of Mechanical Engineering, Yonsei University) ;
  • Lee, Won-Hee (Department of Mechanical Engineering, Yonsei University) ;
  • Lee, Dong-Hyun (Department of Mechanical Engineering, Yonsei University) ;
  • Cho, Hyung-Hee (Department of Mechanical Engineering, Yonsei University) ;
  • Kim, Mun-Young (Gas Turbine Technology Service Center, Korea Plant Service & Engineering) ;
  • Lee, Sung-Ho (Power Generation Laboratory, KEPRI)
  • 오상현 (연세대학교 기계공학과) ;
  • 이원희 (연세대학교 기계공학과) ;
  • 이동현 (연세대학교 기계공학과) ;
  • 조형희 (연세대학교 기계공학과) ;
  • 김문영 (한전KPS(주) GT정비기술센터) ;
  • 이성호 (한전 전력연구원 수화력발전연구소)
  • Published : 2008.06.25
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Abstract

The present study investigates the heat transfer characteristics on concave surface with array impinging jet and fin arrangement. The heat transfer coefficients was measured by TLC method. The Reynolds number based on jet hole diameter is 10,000 and hole diameter-to-plate distance ratio (H/d) is fixed at 2. The rectangular fins are installed in the curved channel and the width of fin varies from 1d to 3d. Without fins, the averaged heat transfer coefficients decreases as moves downstream region. While, the rectangular fins block the crossflow and higher heat transfer rates were observed compared to smooth channel.

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