基于分子动力学方法的油冷铜表面的导热机制
Yazhen Wang1, Shiting Jiang1, Jianjun Hou1
1College of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200444, China.
Langmuir : the ACS journal of surfaces and colloids
|September 2, 2025
概括
在CT管中优化散热包括管理界面热阻和油热导率. 增加油流速和使用功能化碳纳米管显著提高了冷却效率.
科学领域:
- 材料科学
- 热工程
- 计算物理
背景情况:
- 对CT (计算机断层扫描) 管的油冷系统面临由于铜和油之间的界面热阻以及油的固有导热性所带来的局限性.
- 有效的散热对于CT管系统的性能和寿命至关重要.
研究的目的:
- 研究油流量对油冷CT管界面热传输的影响.
- 评估碳纳米管 (CNT) 对冷却油的热导率的影响.
- 为改善液体冷却设备和高导热性流体复合材料提供理论指导.
主要方法:
- 用分子动力学模拟来分析界面热传输.
- 研究了不同油流速度对界面热阻的影响.
- 研究了功能化碳纳米管对油的热导和分布的影响.
主要成果:
- 随着油流速度的增加,表面热阻力下降,观察到高达4米/秒的显著下降.
- 在铜运动速度为1m/s时,观察到表面热阻的显著增加.
- 功能化碳纳米管显著提高了油的热导率,提高了高达101.98%的热导率,并改善了油内的CNT分布.
结论:
- 优化油流速对于降低CT管冷却的界面热阻至关重要.
- 功能化碳纳米管有效提高冷却油的导热性.
- 这些发现为开发先进的液体冷却解决方案和高性能热流体提供了宝贵的见解.
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