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Steady Thermal Analysis of Two-Dimensional Cylindrical Pin Fin with a Nonconstant Base Temperature

机译:基础温度非恒定的二维圆柱销的稳态热分析

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摘要

Steady heat transfer through a pin fin is studied. Thermal conductivity, heat transfer coefficient, and the source or sink term are assumed to be temperature dependent. In the model considered, the source or sink term is given as an arbitrary function. We employ symmetry techniques to determine forms of the source or sink term for which the extra Lie point symmetries are admitted. Method of separation of variables is used to construct exact solutions when the governing equation is linear. Symmetry reductions result in reduced ordinary differential equations when the problem is nonlinear and some invariant solution for the linear case. Furthermore, we analyze the heat flux, fin efficiency, and the entropy generation.
机译:研究了通过翅片的稳定传热。假定导热系数,传热系数以及源或汇项与温度有关。在考虑的模型中,源项或汇项作为任意函数给出。我们采用对称技术来确定允许额外的Lie点对称的源项或宿项的形式。当控制方程为线性时,使用变量分离方法构造精确解。当问题是非线性的并且线性情况有一些不变解时,对称性的减少导致常微分方程的简化。此外,我们分析了热通量,散热片效率和熵的产生。

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  • 来源
    《Mathematical Problems in Engineering》 |2011年第3期|p.1-17|共17页
  • 作者单位

    Center for Differential Equations, Continuum Mechanics and Applications, School of Computational and Applied Mathematics, University of the Witwatersrand, Private Bag 3, WITS 2050, Johannesburg, South Africa;

    Center for Differential Equations, Continuum Mechanics and Applications, School of Computational and Applied Mathematics, University of the Witwatersrand, Private Bag 3, WITS 2050, Johannesburg, South Africa;

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