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A study on fluid flow and heat transfer around the circular cylinder located on a flat plate in crossflow

횡단류 내 평판 위에 놓인 원형 실린더 주위의 유동장 및 열전달에 관한 연구

  • 이기백 (부산대학교 기계공학과 및 기계기술연구소) ;
  • 손정호 (현대중공업 선박해양연구소) ;
  • 양장식 (부산대학교 기계기술연구소)
  • Published : 1996.04.01

Abstract

The present study is concerned with the heat transfer enhancement associated with a symmetrical or asymmetrical horseshoe vortex in front of and around the circular cylinder centered between the side walls of a wind tunnel. The static pressure measurements and the flow visualization in front of and around cylinders have been performed to determine the existence of horseshoe vortex. The hue-capturing method using the thermochromatic liquid crystals with great spatial resolution was used to obtain the local information of the endwall heat transfer coefficients. In case of one cylinder, the convective heat transfer coefficients of the region where the horseshoe vortex exists are larger than those of any other region. In case of two cylinders with tandem arrangement, the heat transfer rate of gap spacing (d/D= 1.5) is higher than that of gap spacings (d/D=2.0 or 2.5).

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