使用多重伪潜相互作用网格博尔兹曼方法,研究落膜在双相接口上的水力动力学不稳定性
Barzan Shahmoradi1, Mostafa Varmazyar1, Arash Mohammadi1
1Shahid Rajaee Teacher Training University, Department of Mechanical Engineering, Tehran, Iran.
Physical review. E
|September 16, 2025
概括
这项研究使用格子博尔兹曼法来模拟垂直下降的膜,揭示了雷诺兹和卡皮兹数如何影响波动力学和流动行为. 调查结果显示,临界数影响波浪高度和流量,与再循环现象相吻合.
科学领域:
- 流体动力学 流体动力学
- 计算物理 计算物理
背景情况:
- 垂直降落膜在各种工业应用中至关重要.
- 了解它们复杂的波动力学对于流程优化至关重要.
研究的目的:
- 通过一种新的计算方法来研究垂直下降膜现象.
- 分析无维参数 (雷诺兹和卡皮兹数) 对电影行为的影响.
主要方法:
- 结合格子博尔兹曼法和多重伪潜相互作用粒子间力模型.
- 对雷诺兹数 (Re) 5.1-35和卡皮兹数 (Ka) 14-85.5进行的模拟.
- 通过侧侧进口激发和分析波特征产生波浪.
主要成果:
- 波厚和波速的数值结果与实验数据有很好的一致性.
- 确定了影响速度特征偏差的因素,包括波动模式和毛细血管.
- 观测到,负剪压力和波峰附近的流量逆转,与实验一致.
结论:
- 数字模型准确地捕捉了复杂的落膜动态,包括循环.
- 确定了临界雷诺德数 (Re=25),导致最大波高度和流速.
- 该研究提供了有关热量和质量转移应用的流动行为的见解.
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