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Hydraulic and Thermal Performance of Microchannel Heat Sink Inserted with Pin Fins

机译:微通道散热器的液压和热性能插入销翅片

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摘要

With the development of micromachining technologies, a wider use of microchannel heat sink (MCHS) is achieved in many fields, especially for cooling electronic chips. A microchannel with a width of 500 μm and a height of 500 μm is investigated through the numerical simulation method. Pin fins are arranged at an inclined angle of 0°, 30°, 45°, and 60°, when arrangement method includes in-lined pattern and staggered pattern. The effects of inclined angle and arrangement method on flow field and temperature field of MCHSs are studied when Reynolds number ranges from 10 to 300. In addition to this, quantitative analyses of hydraulic and thermal performance are also discussed in this work. With the increase of inclined angle, the variation of friction factor and Nusselt number do not follow certain rules. The best thermal performance is achieved in MCHS with in-lined fines at an inclined angle of 30° accompanied with the largest friction factor. Arrangement method of pin fins plays a less significant role compared with inclined angle from a general view, particularly in the Reynolds number range of 100~300.
机译:随着微机械技术的发展,在许多领域中更广泛地使用微通道散热器(MCH),特别是用于冷却电子芯片。通过数值模拟方法研究了宽度为500μm和高度为500μm的微通道。当布置方法包括内衬图案和交错图案时,销翅片以0°,30°,45°和60°的倾斜角度布置。当雷诺数范围为10至300时,研究了倾斜角度和布置方法对MCH的流场和温度场的影响。除此之外,还在该工作中讨论了液压和热性能的定量分析。随着倾斜角度的增加,摩擦因子和纽带号的变化不遵循某些规则。在具有30°的倾斜角度伴随着最大的摩擦系数的倾斜角度的MCH中实现了最佳的热性能。销翅片的布置方法与从一般视图的倾斜角度相比起不太重要的作用,特别是在100〜300的雷诺数范围内。

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