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首页> 外文期刊>Numerical Heat Transfer, Part A. Application: An International Journal of Computation and Methodology >An investigation of the effects of a linear porosity distribution on non-equilibrium heat transfer in high-conductivity graphitic foam
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An investigation of the effects of a linear porosity distribution on non-equilibrium heat transfer in high-conductivity graphitic foam

机译:线性孔隙率分布对高电导率石墨泡沫非平衡传热影响的研究

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摘要

The fluid flow and heat transfer in a block of high-conductivity, graphitized carbon foam placed in a sealed channel in the presence of a variety of porosity gradients transverse to the primary direction of flow are presented. Such considerations are vital for this material, as the current process used to manufacture the foam does not generally yield blocks of uniform porosity. A volume-averaged model, which allows for local thermal nonequilibrium is presented along with its calibration. The results are presented and discussed in light of their relevance to the design of enhanced heat transfer devices based upon graphitized carbon foam.
机译:呈现了在高密度,石墨化碳泡沫块中的流体流动和热传递,该泡沫块放置在密封通道中,且存在与流动主方向垂直的各种孔隙率梯度。这些考虑对于这种材料至关重要,因为用于制造泡沫的当前工艺通常不会产生均匀孔隙率的块。提出了允许局部热不平衡的体积平均模型及其校准。根据与基于石墨化碳泡沫的增强传热装置设计的相关性,对结果进行了介绍和讨论。

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