Numerical modeling and optimization of a V-groove warm water cold-plate
Numerical modeling and optimization of a V-groove warm water cold-plate
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DOI：
10.1109/semi-therm.2017.7896948
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
Yaser Hadad;Bharath Ramakrishnan;S. Alkharabsheh;P. Chiarot;B. Sammakia
中科院分区：
文献类型：
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作者：
Yaser Hadad;Bharath Ramakrishnan;S. Alkharabsheh;P. Chiarot;B. Sammakia
在电子冷却中，水越来越多地取代空气用于需要高热通量的应用。水是理想的替代品，因为它具有高比热容和密度。事实上，与空气相比，高的热容量值（高密度和比热容）使水能够接收、储存和携带更大量的能量。水的不可压缩性和非常低的比容也需要较少量的机械功来进行流体循环。使用温水代替冷冻水使冷却过程更经济，但需要更有效地设计冷板。本文主要研究以温水为冷却介质的V型槽微通道冷板的建模与优化。我们的研究结果表明，性能的冲击通道散热器是显着不同的平行通道设计相比。将流动分成两个分支将流体速度和流动路径减半以用于撞击设计。流体速度和流动长度的这种减小影响发展的热边界层，并且对于较短长度的热交换器（其中通道长度与热入口长度相当）是重要的考虑因素。将冷却剂均匀地分配到每个通道对于尺寸有严格限制的撞击式冷板来说是一个挑战。
In electronics cooling, water is increasingly replacing air for applications requiring high heat flux. Water is the ideal substitute due to its high specific heat capacity and density. Indeed, high values of heat capacity (high density and specific heat capacity) enable water to receive, store and carry higher amounts of energy compared to air. Water's incompressibility and very low specific volume also requires smaller amounts of mechanical work for fluid circulation. Using warm water instead of chilled water makes the cooling process more economical, but requires more efficiently designed cold-plates. Our current work focuses on modeling and optimization of a V-groove mini-channel cold-plate using warm water as the coolant. Our results show that the performance of an impinging channel heat sink is significantly different compared to parallel channel designs. Dividing the flow into two branches cuts the fluid velocity and flow path in half for the impinging design. This reduction in the fluid velocity and flow length affects the developing thermal boundary layer and is an important consideration for a shorter length heat exchanger (where the channel length is comparable to the thermal entrance length). Distributing the coolant uniformly to every channel is a challenge for impinging cold-plates where there are strict limitations on size.