Modeling of Effective Stagnant Thermal Conductivity of Porous Media

Modeling of Effective Stagnant Thermal Conductivity of Porous Media
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多孔介质有效停滞热导率的建模

DOI:
10.1115/1.4031146
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发表时间:
2016
期刊:
Journal of Heat Transfer
影响因子:
--
通讯作者:
Takahiro Nomura and Yuji Yamada
Takahiro Nomura and Yuji Yamada
中科院分区:
--
文献类型:
--
作者:
Yasuyuki Takatsu;Takashi Masuoka;Takahiro Nomura and Yuji Yamada

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相似文献

基于热传导的一维分析,在不假设局部热平衡的情况下,推导了空间周期性多孔介质有效停滞热导率的通用公式。此外,我们详细讨论了颗粒之间的接触面积对有效停滞导热系数的贡献,并提出了对公式的修改来预测多孔介质的实际有效停滞导热系数。目前的结果与Nozad等人的实验结果非常吻合。 (1985 年,“多相系统中的热传导 I:两相系统的理论和实验”,化学工程科学,40(5),第 843-855 页)用于填充球床。
Based on one-dimensional analysis of heat conduction, a general formula for the effective stagnant thermal conductivity of spatially periodic porous media is derived without assuming local thermal equilibrium. Furthermore, we discuss the contribution of the contact area between particles to the effective stagnant thermal conductivity in detail, and the modification of the formula is proposed to predict the actual effective stagnant thermal conductivity for the porous media. The present results are in good agreement with experimental results of Nozad et al. (1985, “Heat Conduction in Multi-Phase Systems I: Theory and Experiments for Two-Phase Systems,” Chem. Eng. Sci.,40(5), pp. 843–855) for a packed-sphere bed.
DOI: 10.1016/0017-9310(89)90138-5
发表时间: 1989
影响因子: 5.2
作者:
D. Shonnard;S. Whitaker
通讯作者: S. Whitaker