端部に垂直壁が設置された水平上向き加熱平板まわりの自然対流の流動と伝熱(熱工学,内燃機関,動力など)

概要

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Natural convective flows around upward-facing horizontal heated plate with a vertical plate at the edge were investigated experimentally. The widths of horizontal heated plates, W, and the heights of vertical plates, H, were varied systematically as W=100〜350mm and H=0〜150mm. The flow fields and the surface temperatures of the horizontal plates were visualized with dye and liquid crystal thermometry. The result shows that the vertical plate blocks incoming flow from the edge, and that the flow entering from the open edge covers the whole horizontal surface when the height of the vertical plate exceeds H/W=0.14 for the adiabatic vertical plate and H/W=0.1 for the heated vertical plate. The local heat-transfer-coefncients of the horizontal plate were also measured. The results show that the vertical adiabatic plate depresses the heat transfer while that the heated vertical plate enhances the heat transfer from the horizontal plates.
社団法人日本機械学会の論文
2004-02-25