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首页> 外文期刊>Thermal engineering >An Efficient Unified Approach for Performance Analysis of Functionally Graded Annular Fin with Multiple Variable Parameters1
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An Efficient Unified Approach for Performance Analysis of Functionally Graded Annular Fin with Multiple Variable Parameters1

机译：一种有效的统一方法，用于功能梯度多变量环形鳍的性能分析1

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摘要

The present work investigates the performance of an annular fin of constant thickness, made up of a functionally graded material (FGM). The fin surfaces are exposed in an environment where the heat loss occurs through convection and radiation. The various parameters, describing the fin performances, are considered to be varying with the local temperature and fin radius. An efficient and unified approach, homotopy perturbation method (HPM), is applied for obtaining the closed form solution from the non-linear heat transfer equation of equilibrium. The effects of key thermal parameters, i.e. thermo-geometric, conduction— radiation, thermal conductivity variation, heat generation, exponent of heat transfer co-efficient and the parameter of surface emissivity are explored on the temperature field leading to an overall investigation of thermal performance. And, the effects of such parameters on heat transfer rate, efficiency, effectiveness and temperature distributions are found to be significant. The accuracy of the present closed form solution is measured when its results are verified with the results of FEM and FDM solutions. The present results agree very well with those of FDM results and FEM results which is obtained using COMSOL software.
机译：本工作研究了由功能梯度材料（FGM）制成的恒定厚度的环形翅片的性能。散热片表面暴露在通过对流和辐射而产生热量损失的环境中。描述翅片性能的各种参数被认为随局部温度和翅片半径而变化。一种有效和统一的方法，同伦摄动法（HPM），用于从平衡的非线性传热方程中获得封闭形式的解。在温度场上探索了关键热参数的影响，即热几何学，传导辐射，热导率变化，热产生，传热系数指数和表面发射率参数，从而对热性能进行了全面研究。并且，发现这些参数对传热速率，效率，有效性和温度分布的影响是显着的。当用FEM和FDM解决方案的结果验证其结果时，将测量本封闭形式解决方案的准确性。本结果与使用COMSOL软件获得的FDM结果和FEM结果非常吻合。

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