Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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HEAT TRANSFER ON TWO NEARBY CIRCULAR CYLINDERS

두 개의 원형 실린더 주위의 열전달

  • 한태헌 (인하대학교 대학원 기계공학과) ;
  • 양경수 (인하대학교 기계공학부) ;
  • 윤동혁 (인하대학교 대학원 기계공학과) ;
  • 이경준 (인하대학교 대학원 기계공학과)
  • Published : 2008.06.30
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Abstract

Heat transfer on two identical nearby circular cylinders immersed in the uniform cross flow at Re=120 and Pr=0.7 was numerically studied. We consider all possible types of arrangements of the two circular cylinders in terms of the distance between the two cylinders and the inclination angle with respect to the direction of the main flow. It turns out that significant changes in the characteristics of heat transfer are noticed depending on how the two circular cylinders are positioned, resulting in quantitative changes of heat transfer coefficients on both cylinders. Collecting all the numerical results obtained, we propose a contour diagram for averaged Nusselt number for each of the two cylinders. The perfect geometrical symmetry implied in the flow configuration allows one to use those diagrams to estimate heat transfer rates on two identical circular cylinders arbitrarily positioned in physical space with respect to the main flow direction.

Keywords

References

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