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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
대한설비공학회 설비저널 空氣調和 冷凍工學 제14권 제2호
발행연도
1985.6
수록면
22 - 31 (10page)

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In this study, a numerical analysis was performed for the natural convection heat transfer in a vertical channel which was consisted of two finite-thickness vertical walls with heat source. The ratio of the thermal conductivity of wall to air played an important role in the analysis. The case for which one side wall has protrusion resistances was also examined.
The governing equations for the system was discretized by control volume formulation and solved by SIMPLE method.
As the result of this study, it was found that the uniform heat flux boundary condition could be applied when the conductivity ratio was below approximately 50 and the uniform temperature boundary condition could be used when the conductivity ratio was over approximately 15,000. However, when the conductivity ratio was between 50 and 15,000, the thermal conductivity ratio value should be considered for the analysis. It was also found that the existence of protrusion resistance influenced the thermal field up to the distance of 3-4 times of the protrusion length.

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