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Modeling of Effective Stagnant Thermal Conductivity of Porous Media

机译:多孔介质有效停滞导热系数的建模

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摘要

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.
机译:基于热传导的一维分析,在不假设局部热平衡的情况下,得出了空间周期性多孔介质有效停滞导热系数的一般公式。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,以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,“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。

著录项

  • 来源
    《Journal of Heat Transfer》 |2016年第1期|012601.1-012601.7|共7页
  • 作者单位

    Department of Intelligent Mechanical Engineering, Fukuoka Institute of Technology, 3-30-1 Wajiro-higashi, Higashi-ku, Fukuoka 811-0295, Japan;

    Emeritus Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan;

    Department of Mechanical Engineering, Kure National College of Technology, 2-2-11 Agaminami, Kure, Hiroshima 737-8506, Japan;

    Department of Mechanical Engineering, Kure National College of Technology, 2-2-11 Agaminami, Kure, Hiroshima 737-8506, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    heat transfer; porous media; effective stagnant thermal conductivity; heat conduction; local volume averaging;

    机译:传播热量;多孔介质有效停滞导热系数;导热本地体积平均;

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