Abstract

The prime findings of a numerical investigation into conduction-convection-radiation heat transfer from an electronic gadget, modeled as a discretely and non-identically heated L-corner, are elucidated. In total, four heaters of different heights are assumed to be embedded in the gadget [three in the left and one in the bottom wall]. The partial differential equations describing temperature variation in the computational domain are deduced by balancing the heat generated with that transported by three possible modes of heat transfer. Air [assumed to be radiatively non-participating] is the medium used for cooling the gadget. Finite difference method is used to enable the governing equations acquire an algebraic form. Consequent equations are solved through the Gauss-Seidel algorithm. Full relaxation is imposed to update the local temperature as it gets iterated, and the iterations are made to halt when the maximum residue goes below 10⁻⁸. The effects of all the pertinent independent properties on different prominent results are rigorously probed into. The explicit role enacted by radiation in the work taken up here has been underlined through certain precisely executed results.

中文翻译：

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传导-对流-辐射对离散非均热电子设备传热的交互影响

摘要

阐明了对电子设备的传导-对流-辐射传热进行数值研究的主要结果，该电子设备被建模为离散且不同加热的 L 角。总共，假设小工具中嵌入了四个不同高度的加热器（三个在左侧，一个在底壁）。通过平衡三种可能的传热模式产生的热量和传输的热量，推导出描述计算域中温度变化的偏微分方程。空气[假设不参与辐射]是用于冷却小工具的介质。采用有限差分法使控制方程获得代数形式。随后的方程通过高斯-赛德尔算法求解。进行完全松弛以在迭代时更新局部温度，并且当最大残差低于10 ^-8时停止迭代。严格探讨了所有相关独立属性对不同显着结果的影响。通过某些精确执行的结果，强调了辐射在此处所进行的工作中所发挥的明确作用。