一种在不同电压下持续产生化气泡的方法
Akurati Prabhakar1, Urbesh Sarkar2, Ritwik Ghoshal1
1Department of Ocean Engineering and Naval Architecture, Indian Institute of Technology Kharagpur, Kharagpur, India.
The Review of scientific instruments
|December 8, 2023
概括
研究人员增强了水下电放电电路,以精确控制化气泡动力学. 这种改进的系统允许调节到14mm的气泡大小,这对于理解流体动力学和材料加工应用至关重要.
科学领域:
- 流体动力学 流体动力学
- 等离子体物理学的物理学
- 声学 声学 在声学方面
背景情况:
- 化气泡的动态对于许多科学和工程应用来说至关重要.
- 水下电力放电是产生和研究这些气泡的一个常见方法.
- 现有的方法在控制泡大小和实验重复性方面存在局限性.
研究的目的:
- 改进水下低压放电电路,用于产生洞穴气泡.
- 为了实现更广泛的最大气泡半径,并提高实验的重复性.
- 研究交付能量,泡潜在能量和泡动态之间的关系.
主要方法:
- 采用继电控制电容网络的可变电压 (高达420V) 的新型电路设计.
- 集成电压传感器来测量放电电压下降.
- 使用半导体场效应晶体管来产生一致的泡.
- 使用高速成像系统测量气泡半径和核化周期.
主要成果:
- 改进的电路产生振荡的化气泡,最大半径为14mm.
- 确定了输送的能量和泡潜在能量之间的相关性.
- 分析了泡半径对电路电阻,电极电阻和材料的依赖.
- 发现电极氧化延迟会影响泡崩和内部压力.
结论:
- 这种新型电路设计可以更好地控制化气泡的产生和大小.
- 通过精确控制放电能量,实验的可重复性得到了显著提高.
- 了解电极材料特性和氧化是优化泡崩动态的关键.
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