Natural Convection Heat Transfer from a Hot Body in s Square Enclosure

정사각형 밀폐공간 내에 있는 고온부로부터의 자연대류 열전달

  • 권순석 (동아대학교 공과대학 기계공학과) ;
  • 정태현 (동아대학교 대학원 기계공학과) ;
  • 권용일 (동아대학교 대학원 기계공학과)
  • Published : 1992.08.01

Abstract

Laminar natural convection heat transfer from a hot body in a square enclosure has been studied for various center positions of a hot square at Grashof number $Gr=1.5{\times}10^5$, Prandtl number Pr=0.71 and dimensionless thermal conductivity $k_g/k_f=14710$. The natural convection at the center position of a hot square; $X_c$, $Y_c=0.5$, 0.2 shows the most strong and at $X_c$, $Y_c=0.5$, 0.7 the most weak. The total mean Nusselt number at $X_c$, $Y_c=0.5$, 0.2 was 7.4% higher than that at $X_c$, $Y_c=0.2$, 0.5. The total mean Nusselt number at $X_c$, $Y_c=0.5$, 0.7 was 5.0% lower than that at $X_c$, $Y_c=0.3$, 0.5.

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