Computational Study of Heat Transfer inside Different PCMs Enhanced by Al2O3 Nanoparticles in a Copper Heat Sink at High Heat Loads
Computational Study of Heat Transfer inside Different PCMs Enhanced by Al2O3 Nanoparticles in a Copper Heat Sink at High Heat Loads
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DOI：
10.3390/nano10020284
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发表时间：
2020-02-01
期刊：
影响因子：
5.3
通讯作者：
Sheremet, Mikhail A.
中科院分区：
文献类型：
--
作者：
Bondareva, Nadezhda S.;Gibanov, Nikita S.;Sheremet, Mikhail A.
电子元器件的散热是电子技术中建筑发展的重要问题之一。基于纳米固体颗粒增强相变材料的热沉是一种很有发展前途的冷却方法。在本文中，PCM的物理性质和纳米颗粒的浓度对传热和传质的封闭散热器内的翅片，在存在的恒定体积的发热源的影响进行了分析。研究了纳米增强相变材料（NePCMs）熔化的共轭问题，考虑了熔体中自然对流对外部对流冷却的影响。在非原始变量中，如流函数和涡量，一个二维的问题制定。采用单相纳米液体模型来描述NePCM内的传输。
The cooling of electronic elements is one of the most important problems in the development of architecture in electronic technology. One promising developing cooling method is heat sinks based on the phase change materials (PCMs) enhanced by nano-sized solid particles. In this paper, the influence of the PCM's physical properties and the concentration of nanoparticles on heat and mass transfer inside a closed radiator with fins, in the presence of a source of constant volumetric heat generation, is analyzed. The conjugate problem of nano-enhanced phase change materials (NePCMs) melting is considered, taking into account natural convection in the melt under the impact of the external convective cooling. A two-dimensional problem is formulated in the non-primitive variables, such as stream function and vorticity. A single-phase nano-liquid model is employed to describe the transport within NePCMs.