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首页> 外文期刊>Journal of Heat Transfer >Design and Performance Evaluation of Constructal MicroChannel Network Heatsinks
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Design and Performance Evaluation of Constructal MicroChannel Network Heatsinks

机译：构造微通道网络散热器的设计和性能评估

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摘要

This work presents the development and analysis of constructal microchannel network architectures for heat dissipation. The network configurations are characterized by multiple flow ramifications and changes in length and hydraulic diameter scales through each ramification level. Architectures investigated experimentally in the past years have adopted constant scaling rules throughout their ramification levels. In this study, constructal theory inspires the design of network architectures with variable scaling rules and up to three ramification levels (N). As a result, it was verified that constructal networks allowed thermal resistance reduction of 15% (N = 2) and 42% (N = 3) for a micro heat sink at a characteristic operational regime. Architecture's selection criterion using performance curves is proposed and it was also demonstrated that the bifurcated network with diameter ratio according to Hess–Murray law is not appropriate for heat dissipation purposes in miniaturized devices.
机译：这项工作介绍了用于散热的微通道网络结构的开发和分析。网络配置的特点是多个分流，每个分叉级别的长度和水力直径比例都会发生变化。在过去几年中，经过实验研究的体系结构在其扩展级别上一直采用恒定的缩放规则。在这项研究中，构造理论启发了具有可变缩放规则和最多三个分支级别（N）的网络体系结构的设计。结果，证实了在特定的工作状态下，构造网络使微型散热器的热阻降低了15％（N = 2）和42％（N = 3）。提出了使用性能曲线的体系结构选择标准，并且还证明了根据Hess-Murray律具有直径比的分叉网络不适用于小型设备中的散热目的。

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