Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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An Experiment and Numerical Analysis of Mixed Convection in a Rectangular Space with Variable Partition

가변 격판을 갖는 사각공간 내의 혼합대류에 대한 실험과 수치해석

  • 이광성 (경상대학교 대학원) ;
  • 신재호 (경상대학교 대학원) ;
  • 이중섭 (경상대학교 대학원) ;
  • 정한식 (경상대학교 수송기계공학부·해양산업연구소) ;
  • 정효민 (경상대학교 수송기계공학부·해양산업연구소)
  • Published : 2001.12.01
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Abstract

The laminar convection heat transfer in a ventilated space with various horizontal partitions was studied numerically and experimentally. The experimental results by holographic interferometer showed good agreements with the numerical results. For the numerical study, the governing equations were solved by using a finite volume method for $46.6\leqRe\leq1332,\;1460\leqGr\leql1585$, Pr=0.71 and the variations of partition lengths. The isotherms and velocity vectors have been represented for various parameters. As the length of partition increases, the convection heat transfer decreases. Based on the numerical data, a correlation was obtained for the dimensionless mean Nusselt number in terms of $Gr/Re^2$. In the region of $Gr/Re^2$<1, the mean Nusselt number was very small, but in the region of $Gr/Re^2\geq1$, the mean Nusselt number was constant.

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References

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