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首页> 外文期刊>International Journal of Heat and Mass Transfer >Heat transfer and permeability of the tree-like branching networks
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Heat transfer and permeability of the tree-like branching networks

机译：树状分支网络的传热和渗透率

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摘要

To design an ideal tree-like branching networks with good performance on both heat transfer and flow of working fluid, the thermal conductivity and permeability of the tree-like branching networks are calculated. In addition, the thermal conductivity created by heat convection is analyzed and compared with that created by heat conduction. It's found that when the temperature difference between wall and fluid in each branching level is treated as different, heat convection accounts for larger proportion than heat conduction in heat transfer. Furthermore, the difference of each branching level's temperature difference between wall and fluid plays a key role in heat transfer. There exists large error in calculation of heat transfer, if the difference of each branching level's temperature difference between wall is not considered. (C) 2018 Elsevier Ltd. All rights reserved.
机译：为了设计理想的树状分支网络，使其在工作流体的传热和流动方面均具有良好的性能，计算了树状分支网络的导热率和渗透率。另外，分析了由热对流产生的热导率，并将其与由热传导产生的热导率进行比较。我们发现，当将每个分支水平的壁与流体之间的温差视为不同时，在换热中，热对流比热传导所占的比例更大。此外，壁和流体之间每个分支水平的温差之差在传热中起关键作用。如果不考虑壁之间各分支水平的温差之差，则传热计算存在较大误差。 （C）2018 Elsevier Ltd.保留所有权利。

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