傾斜密閉容器内の自然対流熱伝達 : 内部物体の熱伝導率の違いによる熱伝達の促進と抑制効果

概要

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The effects of the thermal conductivity of an inner body on the heat transfer phenomena in an inclined rectangular enclosure have been studied both numerically and experimentally. In the numerical analysis, the ratio of thermal conductivities of inner body and working fluid was varied parametrically. The numerical analysis was carried out for Pr=10, Ra_w=5×10^4〜5×10^6 and inclination angle γ=-30°〜60°. The experiments were carried out with water. A bakelite plate and brass plate were used for the inner body. The flow and temperature fields were shown in detail and the heat transfer coefficient was discussed from the results. It is clarified here that the inner body with large thermal conductivity enhances the heat transfer rate of the enclosure for the large inclination angle of the enclosure, but suppresses the heat transfer rate for the small inclination angle of the enclosure.
1992-03-25