Abstract This work aims to determine the optimum heat generation ratio among discrete heat sources generating different amounts of heat in order to mitigate the hot spot. Six different heat generation ratios are considered by following the constructal design method. For comparison, the average and total heat sources’ heat generation rates are kept equal for every examined cases. Meanwhile, Reynolds number ranges from 792 to 3962. All the three heat transfer mechanisms are taken into account with an integrated approach to calculate precisely the dimensionless global conductance of the IC pack. Three dimensional simulations are done with ANSYS Fluent while measuring surface temperatures in experiments. The output parameters of the study are the surface and hot spot temperatures, Nusselt number and dimensionless global conductance change with Reynolds number and heat generation ratio. It is disclosed that relative decreasing heat generation rates are convenient for hot spot mitigation.

中文翻译：

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不同产热率热源缓解热点的结构设计

摘要 本工作旨在确定产生不同热量的离散热源之间的最佳发热比，以减轻热点。按照结构设计方法考虑了六种不同的发热率。为了比较，每个检查案例的平均和总热源的热生成率保持相等。同时，雷诺数的范围从 792 到 3962。所有三种传热机制都被考虑在内，并采用集成方法精确计算 IC 包的无量纲全局电导。使用 ANSYS Fluent 进行三维模拟，同时在实验中测量表面温度。研究的输出参数是表面和热点温度，Nusselt 数和无量纲全局电导随雷诺数和发热比的变化。公开了相对降低的发热率有利于热点缓解。