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首页> 外文期刊>International Journal of Refrigeration >Thermally developing flow of Al2O3-water nanofluid through regular N-sided polygonal ducts: A semi-analytic weighted residuals approach
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Thermally developing flow of Al2O3-water nanofluid through regular N-sided polygonal ducts: A semi-analytic weighted residuals approach

机译：通过常规n面多边形管道热显影Al2O3-水纳米流体：半分析加权残留方法

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摘要

A semi-analytical approach is proposed to solve the hydrodynamically fully developed and thermally developing flow and heat transfer of Al2O3-water nanofluid through N-sided polygonal ducts. Using the Galerkin weighted residuals method, closed-form solutions for the flow and temperature fields in various polygonal ducts for the constant wall temperature and uniform wall heat flux boundary conditions are obtained. Variations of the Nusselt number along the axial direction for different duct geometries and different volume fraction of the nanoparticles are presented. Comparisons of the results for special cases with the existing results from the literature indicate that the employed method is quite accurate. The results show that the heat transfer enhances with increasing the nanoparticles volume fraction. (C) 2017 Elsevier Ltd and IIR. All rights reserved.
机译：提出了一种半分析方法，以解决通过N面多边形管道的Al 2 O 3水纳米流体的流体动力学完全发育和热显影流动和热传递。 使用Galerkin加权残留方法，获得了用于恒定壁温和均匀壁热通量边界条件的各种多边形管道中的流动和温度场的闭合溶液。 提出了沿着不同管道几何形状的轴向和纳米颗粒的不同体积分数的沿轴向的孤立数的变化。 与文献中现有结果的特殊情况结果的比较表明，采用的方法是非常准确的。 结果表明，随着纳米粒子体积分数的增加，传热增强。 （c）2017年Elsevier Ltd和IIR。 版权所有。

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