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首页> 外文期刊>Journal of Heat Transfer >Thermal Analysis of Multijet Impingement Through Porous Media to Design a Confined Heat Management System
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Thermal Analysis of Multijet Impingement Through Porous Media to Design a Confined Heat Management System

机译:多孔介质通过多孔介质进行热分析设计密闭热管理系统

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Thermal management has a key role in the development of advanced electronic devices to keep the device temperature below a maximum operating temperature. Jet impingement and high conductive porous inserts can provide a high efficiency cooling and temperature control for a variety of applications including electronics cooling. In this work, advanced heat management devices are designed and numerically studied employing single and multijet impingement through porous-filled channels with inclined walls. The base of these porous-filled nonuniform heat exchanging channels will be in contact with the devices to be cooled; as such the base is subject to a high heat flux leaving the devices. The coolant enters the heat exchanging device through single or multijet impingement normal to the base, moves through the porous field and leaves through horizontal exit channels. For numerical modeling, local thermal nonequilibrium model in porous media is employed in which volume averaging over each of the solid and fluid phase results in two energy equations, one for solid phase and one for fluid phase. The cooling performance of more than 30 single and multijet impingement designs are analyzed and compared to achieve advantageous designs with low or uniform base temperature profiles and high thermal effectiveness. The effects of porosity value and employment of 5% titanium dioxide (TiO2) in water in multijet impingement cases are also investigated.
机译:热管理在先进的电子设备开发中具有关键作用,以使设备温度降低到最大工作温度以下。喷射冲击和高导电多孔插件可以为各种应用提供高效的冷却和温度控制,包括电子冷却。在这项工作中,通过多孔填充通道,设计了先进的热管理装置和数控采用单一和多jet冲击,通过倾斜壁。这些多孔填充的非均匀式热交换通道的底座将与待冷却的器件接触;因此,碱基受到远离器件的高热通量。冷却剂通过垂直于底座的单个或多jet冲击进入热交换装置,通过多孔领域并通过水平出口通道叶。对于数值建模,采用多孔介质中的局部热非预测模型,其中在每个固体和流体相位上的体积平均导致两个能量方程,一个用于固相,一个用于流体相。分析了多于30个单一和多jet冲击设计的冷却性能,并比较了实现低或均匀的基础温度型材和高热效率的有利设计。还研究了孔隙率值和5%二氧化钛(TiO2)在水中的孔隙率值和在多jet冲击病例中的影响。

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