对纳米流体导热性不同参数的实验和理论研究
Jun Qin1,2, Yuequn Tao1, Qiusheng Liu1,2
1Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China.
Micromachines
|May 27, 2023
概括
纳米流体的热导率由较小,延长的纳米粒子增强,并取决于基础流体的特性. 较高的体积分数可以改善热传递,但较大的粒子大小可以减少热传递.
科学领域:
- 材料科学 材料科学 材料科学
- 热力学是一种热力学.
- 热传递热量转移的方法
背景情况:
- 与基础流体相比,纳米流体提供了增强的热性能.
- 了解影响纳米流体导热性的因素对于高效的传热应用至关重要.
研究的目的:
- 实验研究影响纳米流体导热性的因素.
- 为纳米流体开发一种新的导热模型,采用纳米颗粒尺寸.
主要方法:
- 在不同的条件下测量热导率的实验测量.
- 维度分析,以开发一个预测性导热模型.
主要成果:
- 热导率的增强与纳米粒子的热导率成正比,与粒子大小相反.
- 长长的纳米粒子提供了比球形更大的增强.
- 较高的体积分数增加了导热率.
结论:
- 纳米粒子的大小,形状,体积分数和基础流体特性显著影响热导率.
- 拟议的模型提供了对优化纳米流体以增强热传输的见解.
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