格子博尔茨曼基于有限差异的模型,用于液滴的完全非线性电水力学变形
Himadri Sekhar Basu1, Sasidhar Kondaraju1, Supreet Singh Bahga2
1School of Mechanical Sciences, Indian Institute of Technology Bhubaneswar, Khordha, Odisha-752050, India.
Physical review. E
|July 19, 2023
概括
一个新的混合数值模型解决了电场驱动流体流动的泰勒-梅尔切尔泄漏-过电模型. 它揭示了显著的表面电荷对流效应在形滴状变形中,与前置变形不同.
科学领域:
- 计算流体动力学 计算流体动力学
- 电磁 - 水力动力学
- 非线性动力学是一种非线性动力学.
背景情况:
- 泰勒-梅尔切尔泄漏-过电模型描述了复杂的电场诱导的流体流.
- 现有的模型在准确捕捉界面不连续性和非线性效应方面面临挑战.
研究的目的:
- 为完整的泰勒-梅尔切尔漏电电解电模型开发一个强大的混合数值框架.
- 为了研究非线性表面电荷对流 (SCC) 对液滴变形模式的影响.
主要方法:
- 采用混合格子博尔兹曼 (LB) 和有限差异 (FD) 方法.
- 使用特定方向的连续梯度来处理接口不连续性.
- 多重放松时间 (MRT) 方案和中心差异方案分别用于流体运输和电荷运输方程.
主要成果:
- 该模型与SCC术语被排除在外的现有文献有很好的一致性.
- 在形变形模式中观察到SCC的强烈存在.
- 对于前形变形,SCC的效果较弱.
结论:
- 开发的LB-FD框架准确模拟电场诱导的流量,包括非线性SCC效应.
- 表面电荷对流显著影响滴滴变形,在斜面和斜面状态之间存在显著差异.
- 该研究提供了对规范漏电介电流体系统的非线性动力学的见解.
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