对插入式双S轮机矩形迷你通道的流量和热传递特性进行数值研究
1School of Mechanical and Power Engineering, Henan Polytechnic University, Jiaozuo, China.
PloS one
|February 15, 2024
概括
双S轮机在矩形迷你通道中显著增强了热传递. 这些被动装置改善流体流动,降低热阻,提高微散热设备的效率.
科学领域:
- 热传递热量转移的方法
- 流体动力学 流体动力学
- 机械工程 机械工程
背景情况:
- 微频道对于微散热设备至关重要.
- 被动传热增强对于提高效率至关重要.
- 现有的轮机在小道上存在局限性.
研究的目的:
- 调查新型双S轮机在矩形迷你通道中被动热传递增强的有效性.
- 分析双S轮机不同轴半径对热液压性能的影响.
- 为了补充对微频道传热中恒定墙壁温度边界条件的研究.
主要方法:
- 使用了计算流体动力学 (CFD) 模拟.
- 该研究的重点在于在恒定墙壁温度条件下的矩形迷你通道.
- 分析了轴半径为1mm,1.5mm和2mm的双S轮机,其雷诺德数范围为254.512545.09.
主要成果:
- 与平滑通道相比,平均Nusselt数增加了67.16%101.74%.与平滑通道相比,平均Nusselt数增加了67.16%.
- 总热阻降低了 40.28% 50.72%.
- 现场协同效应数增加了69.64%-111.65%,表明传热效率有所提高.
结论:
- 互波式双S轮机在光滑通道上提供优越的传热性能.
- 该研究为制造微散热设备提供了一种新方法.
- 平均努塞尔特数和压力下降的预测公式是使用非线性回归来开发的.
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