Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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HEAT-TRANSFER ANALYSIS OF A COOLING CHANNEL WITH INCLINED ELLIPTICAL DIMPLES

기울어진 타원형 딤플이 부착된 냉각 유로에 대한 열전달 성능해석

  • Kim, H.M. (Dept. of Mechanical Engineering, Inha Univ.) ;
  • Moon, M.A. (Dept. of Mechanical Engineering, Inha Univ.) ;
  • Kim, K.Y. (Dept. of Mechanical Engineering, Inha Univ.)
  • Received : 2011.01.25
  • Accepted : 2012.02.02
  • Published : 2012.03.31
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Abstract

This paper deals with a parametric study on inclined elliptical dimples to enhance heat transfer in a channel. Three-dimensional Reynolds-averaged Naiver-Stokes equations are solved to estimate flow and heat transfer in dimpled channel. As turbulence closure, the low-Re shear stress transport model is employed. Two non-dimensional geometric variables, dimple ellipse diameter ratio and angle of main diameter to flow direction are selected for the parametric study. The inclined elliptical dimples show higher heat-transfer performance but with higher pressure drop compared to the circular dimples. And there is an optimum inclination angle that gives the maximum heat transfer.

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References

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