在垂直电场下降滴滴的数值研究
Hailong Zhang1,2, Tingting Zhang3, Yuxin Lu4
1Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen, Guangdong, China.
Electrophoresis
|March 25, 2025
概括
一个新的数值模型模拟了电场中的滴落. 电场将液滴垂直延长,增加速度,并根据电场强度改变形状,从碗状到指针状.
科学领域:
- 流体动力学 流体动力学
- 电动力学 电动力学
- 计算物理学的计算物理.
背景情况:
- 控制小规模滴滴的行为至关重要.
- 电场为落下滴滴提供了有前途的控制方法.
- 目前还缺少电动力学下降滴的综合数值模型.
研究的目的:
- 提出一个相场数值模型,用于垂直电场下降的滴.
- 研究电场对滴滴速度和界面形态学的影响.
主要方法:
- 开发了一个相场数值模型.
- 在垂直电场下模拟掉落的水滴.
- 分析了滴滴速度和形状演变.
主要成果:
- 垂直电场延长了水滴,增加了下降速度.
- 较弱的电场 (CaE <1.0) 会导致碗状的水滴形状.
- 强大的电场 (CaE ≥1.0) 会产生类似指纹的滴水形状.
结论:
- 数值模型提供了对电动力学落滴行为的见解.
- 电场强度在很大程度上决定了滴滴形态和动态.
- 这项工作提供了潜在的策略来调节掉落滴滴的行为.
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