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Numerical study of conjugated heat transfer in metal foam filled double-pipe

机译：金属泡沫填充双管内共轭传热的数值研究

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摘要

The two equation numerical model has been applied for parallel flow double-pipe heat exchanger filled with open cell metal foams. The model fully considered solid-fluid conjugated heat transfer process coupling heat conduction and convection in open cell metal foam solid matrix, interface wall and fluid in both inner and annular space in heat exchanger. The non-Darcy effect and the wall thickness are also taken into account. The interface wall heat flux distribution along the axial direction is predicted. The numerical model is firstly verified and then the influences of solid heat conductivity, metal foam porosity, pore density, relative heat conductivity and inner tube radius of the heat exchanger on dimensionless temperature distribution and heat transfer performance of heat exchanger are numerically studied. It is revealed that the proposed numerical model can effectively display the real physical heat transfer process in the double pipe heat exchanger. It is expected to provide useful information for the design of metal foam filled heat exchanger.
机译：这两个方程数值模型已经应用于装有开孔金属泡沫的平行流双管换热器。该模型充分考虑了在开孔金属泡沫固体基质中的热传导和对流耦合，换热器内部和环形空间中的界面壁和流体的固液共轭传热过程。还应考虑非达西效应和壁厚。预测沿轴向的界面壁热通量分布。首先验证了数值模型，然后数值研究了固体导热系数，金属泡沫孔隙率，孔密度，相对导热系数和热交换器内管半径对热交换器无因次温度分布和传热性能的影响。结果表明，所提出的数值模型可以有效地显示双管换热器中真实的物理传热过程。有望为填充金属泡沫的热交换器提供有用的信息。

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  • 来源
    《International Journal of Heat and Mass Transfer》 |2010年第22期|p.4899-4907|共9页
  • 作者

    Y.P. Du; Z.G. Qu; C.Y. Zhao; W.Q. Tao;

  • 作者单位

    State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy & Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China;

    rnState Key Laboratory of Multiphase Flow in Power Engineering, School of Energy & Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China;

    State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy & Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China School of Engineering, University of Warwick, Coventry CV4 7AL, UK;

    rnState Key Laboratory of Multiphase Flow in Power Engineering, School of Energy & Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China;

  • 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

    two-equation model; double-pipe; metal foams; conjugated heat transfer;

    机译：二等式模型;双管金属泡沫;共轭传热;

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