科尔摩戈罗夫在泡诱导的流中扩大规模
Tian Ma1, Shiyong Tan2, Rui Ni2
1Helmholtz-Zentrum Dresden-Rossendorf, Institute of Fluid Dynamics, 01328 Dresden, Germany.
Physical review letters
|July 31, 2025
概括
这项研究研究了气泡诱导流 (BIT) 中气泡大小以下的流. 研究人员发现了近似的科尔摩戈罗夫缩放,并得出了新的动能消耗率缩放,表明在BIT中不可能有大的惯性范围.
科学领域:
- 流体动力学 流体动力学
- 流的研究研究流.
- 泡动力学 泡动力学 泡动力学
背景情况:
- 气泡诱导的流 (BIT) 是一个复杂的现象.
- 了解小规模的流对于各种应用至关重要.
- 科尔摩戈罗夫缩放是流理论的一个基本概念.
研究的目的:
- 在泡诱导的流中研究科尔摩戈罗夫缩放到泡大小以下.
- 导出并验证BIT中的动能消耗率的新缩放.
- 预测泡大小以下的尺度分离及其对参数的依赖.
主要方法:
- 使用3D拉格朗追踪进行实验分析.
- 分析二级和三级结构函数.
- 推导出一种新的动能消散速率的缩放.
主要成果:
- 对于均的泡群,观察到大约的科尔摩戈罗夫缩放.
- 新得出的动能消耗率缩放显示出与实验数据的良好一致.
- 在BIT中,由于泡破裂,一个大的惯性范围是不可行的.
结论:
- 该研究证实了在特定条件下在BIT中近似的科尔摩戈罗夫缩放.
- 动能消耗率的新缩放为BIT分析提供了有价值的工具.
- 泡大小限制限制了双边协议中大惯性范围的发展.
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