对流辐射环形翅片磁场和热生成的热应力意义:DTM和MRPSM的应用

IF 5.4 2区 工程技术 Q1 ENGINEERING, AEROSPACE Propulsion and Power Research Pub Date : 2022-12-01 DOI:10.1016/j.jppr.2022.11.001
Ganeshappa Sowmya , Fehmi Gamaoun , Amal Abdulrahman , Ravikumar Shashikala Varun Kumar , Ballajja Chandrappa Prasannakumara
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引用次数: 8

摘要

本文解释了磁场影响下对流辐射矩形环形翅片的温度属性。本文还研究了热辐射、对流和磁场对热应力分布的影响。将代表稳态热传导、对流和辐射过程的控制能量方程转化为具有相应边界条件的无量纲非线性常微分方程(ODE)。然后利用Pade近似微分变换法(DTM)和改进的残差幂级数法(MRPSM)对得到的ODE进行解析求解。此外,对温度场的重要特征、热应力和一些无量纲参数的影响进行了图解检查,并提供了物理解释以帮助理解。研究结果表明,温度分布随产热参数和导热系数的增大而增大,随对流传导参数、哈特曼数和辐射传导参数的增大而逐渐减小。在外加磁场作用下,翅片的热应力分布有较大的变化。
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Significance of thermal stress in a convective-radiative annular fin with magnetic field and heat generation: application of DTM and MRPSM

The present paper explains the temperature attribute of a convective-radiative rectangular profiled annular fin with the impact of magnetic field. The effect of thermal radiation, convection, and magnetic field on thermal stress distribution is also studied in this investigation. The governing energy equation representing the steady-state heat conduction, convection, and radiation process is transformed into its dimensionless nonlinear ordinary differential equation (ODE) with corresponding boundary conditions using non-dimensional terms. The obtained ODE is then solved analytically by employing the Pade approximant-differential transform method (DTM) and modified residual power series method (MRPSM). Moreover, the important characteristics of the temperature field, the thermal stress, and the impact of some non-dimensional parameters are inspected graphically, and a physical explanation is provided to aid in comprehension. The significant findings of the investigation reveal that temperature distribution enhances with an increase in the magnitude of the heat generation parameter and thermal conductivity parameter, but it gradually decreases with an increment of convective-conductive parameter, Hartmann number, and radiative-conductive parameter. The thermal stress distribution of the fin varies considerably in the applied magnetic field effect.

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来源期刊
CiteScore
7.50
自引率
5.70%
发文量
30
期刊介绍: Propulsion and Power Research is a peer reviewed scientific journal in English established in 2012. The Journals publishes high quality original research articles and general reviews in fundamental research aspects of aeronautics/astronautics propulsion and power engineering, including, but not limited to, system, fluid mechanics, heat transfer, combustion, vibration and acoustics, solid mechanics and dynamics, control and so on. The journal serves as a platform for academic exchange by experts, scholars and researchers in these fields.
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