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Thermal convection in horizontal rectangular enclosures at moderate Rayleigh numbers: Effect of sidewall conductance and aspect ratio

机译:水平矩形箱体中瑞利数下的热对流:侧壁电导和纵横比的影响

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摘要

Moderate Rayleigh number thermal convection for horizontal rectangular enclosure is experimentally studied for 1.85 x 10(6) = Ra = 1.04 x 10(11). The best fit for the investigated range of Rayleigh numbers is found to be Nu = 0.067Ra(0.330) when a sidewall material of very low thermal conductivity is employed. The effect of sidewall conductance and aspect ratio on the Nu - Ra relationship is also scrutinized. (C) 2019 Elsevier Ltd. All rights reserved.
机译:对水平矩形外壳的中瑞利数热对流进行了实验研究,得出1.85 x 10(6)<= Ra <= 1.04 x 10(11)。当采用导热系数非常低的侧壁材料时,发现瑞利数研究范围的最佳拟合为Nu = 0.067Ra(0.330)。还仔细研究了侧壁电导和纵横比对Nu-Ra关系的影响。 (C)2019 Elsevier Ltd.保留所有权利。

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