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| 双层H形分形流道冷却结构性能分析与多目标优化 |
| Heat transfer performance analysis and multi-objective optimization of cooling structure with double-layer H-shaped fractal flow channels |
| 投稿时间：2025-06-06 修订日期：2025-08-05 |
| DOI： |
| 中文关键词: 冷却结构 传热 分形流道 多目标优化 |
| 英文关键词:cooling structure heat transfer fractal channel multi-objective optimization |
| 基金项目:国家自然科学基金项目（面上项目，重点项目，重大项目） |
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| 中文摘要: |
| 随着电子元器件集成度不断提高,高热流密度所带来的散热挑战日益显著。提升散热性能和散热均匀性能够有效延长电子元器件的使用寿命并增强其性能稳定性。为满足高功率芯片密集排布的散热需求,本文对基于分形理论设计的双层H形分形微流道液冷板进行了改良,以优化其流道排布以增强散热均匀性。首先,提出了一种优化局部流道分布位置的方法,并定义了多个可能影响其散热性能及散热均匀性的参数。然后利用单因素分析方法筛选出 3 个可优化参数,以此为设计变量建立于目标函数之间的Kriging响应模型。最后,对其采用螳螂搜索算法(MOMSA)进行多目标优化,得到优化后的几何参数。结果表明,优化后的流道对应的Tmax和ΔT分别降低了11.74%和26.15%,优化效果显著。该研究为分形流道的散热性能优化提供了有效方法,同时增强了其在高热流密度散热工况下的适用性。 |
| 英文摘要: |
| With the increasing integration of electronic components, the challenges associated with heat dissipation due to high heat flux density are becoming increasingly significant. Enhancing both the performance and uniformity of heat dissipation can effectively extend the service life of electronic components and improve their performance stability. To address the heat dissipation requirements of densely arranged high-power chips, this paper enhances the double-layer H-shaped fractal microfluidic liquid cold plate, originally designed based on fractal theory, by optimizing its flow channel arrangement to improve heat dissipation uniformity. First, a method to optimize the distribution of local runners is proposed, and several parameters that may influence heat dissipation performance and uniformity are defined. Subsequently, a univariate analysis method is employed to identify three parameters suitable for optimization, which are then utilized as design variables to establish a Kriging response model correlating the objective functions. Finally, the Mantis Search Algorithm (MOMSA) is applied for multi-objective optimization, resulting in the identification of optimized geometric parameters. The results indicate that the maximum temperature (Tmax) and temperature difference (ΔT) corresponding to the optimized flow channel are reduced by 11.74% and 26.15%, respectively, demonstrating significant optimization effects. This study presents an effective approach for enhancing the heat dissipation performance of fractal flow channels, thereby increasing their applicability under conditions of high heat flux density. |
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