通过液体-蒸汽接口的非线性质量和热传递
Pouria Feyzi Oskouei1, Henning Struchtrup1
1University of Victoria, Department of Mechanical Engineering, PO Box 1700 STN CSC, Victoria, British Columbia, Canada V8W 2Y2.
Physical review. E
|September 16, 2025
概括
这项研究引入了赫茨-克努森-施拉格 (HKS) 模型的非线性扩展,改善了液体-蒸汽接口中质量和热传递的预测. 改进的模型准确地反映了接口热力学和运动理论,揭示了明显的非线性.
科学领域:
- 热力学是一种热力学.
- 运动理论 运动理论
- 流体动力学 流体动力学
背景情况:
- 通过液体-蒸汽接口的质量和热量转移是许多物理过程的基础.
- 现有的模型经常简化接口现象,忽视非线性效应.
- 不可逆转的热力学和动力学理论为理解这些转移提供了框架.
研究的目的:
- 开发Hertz-Knudsen-Schrage (HKS) 模型的非线性延伸,用于在液体-蒸汽接口上进行质量和热传输.
- 将这种扩展模型与非平衡热力学的力流关系联系起来.
- 调查接口电阻对温度,质量流和热流的依赖.
主要方法:
- 扩展赫茨-克努森-施拉格 (HKS) 模型以纳入非线性.
- 制定相应的传热关系.
- 在不平衡热力学框架内确定非线性接口电阻.
- 使用温度和和压力的电阻的非维度化.
主要成果:
- 扩展的HKS模型与零热流条件的已建立的动力学理论有很好的一致性.
- 发现接口电阻取决于接口温度,质量流和热流.
- 无维电阻被证明是独立于局部温度的.
- 重新评估分子动力学数据证实了界面电阻的明显非线性.
结论:
- HKS模型的非线性扩展提供了更准确的界面质量和热传递的描述.
- 接口电阻表现出显著的非线性行为,取决于流量条件.
- 这些发现有助于更深入地了解液体-蒸汽界面的不平衡现象.
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