Investigation of Flow Distribution in Microchannels Heat Sinks
Investigation of Flow Distribution in Microchannels Heat Sinks
复制标题
微通道散热器中的流量分布研究
DOI：
10.1080/01457630902921287
复制
发表时间：
2009
影响因子：
2.3
通讯作者：
Bogojevic D
中科院分区：
文献类型：
--
作者：
Bogojevic D
The thermal efficiency of microchannel-based heat sinks relies on uniform fluid flow distribution between channels. Maldistribution, whether caused by poor manifold design or blockage of individual microchannels, can lead to hotspots and consequent thermal damage. This work considers design of manifolds for even flow distribution and the effect of channel blockage on the flow. An approximate model was used to evaluate the effect of manifold geometry on the flow distribution, and the results were compared with computational fluid dynamics (CFD) simulation. Various parameters, which influence the flow distribution such as the shape of distributing and collecting manifolds and position of inlet and outlet holes, have been studied for different inlet flow rates. The effect of channel blockage on flow distribution and pressure drop has been investigated. It was found that good agreement between results of the approximate model and results of CFD simulations are shown only for low Reynolds numbers. Results obtained by approximate model and CFD simulations were used to assist design of manifolds for uniform flow distribution between microchannels.
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