Stabilization of electrically conducting capillary bridges using feedback control of radial electrostatic stresses and the shapes of extended bridges
作者:Mark J. Marr-Lyon、David B. Thiessen、Florian J. Blonigen、Philip L. Marston
DOI:10.1063/1.870354
日期:2000.5
Electrically conducting, cylindrical liquid bridges in a density-matched, electrically insulating bath were stabilized beyond the Rayleigh–Plateau (RP) limit using electrostatic stresses applied by concentric ring electrodes. A circular liquid cylinder of length L and radius R in real or simulated zero gravity becomes unstable when the slenderness S=L/2R exceeds π. The initial instability involves
使用由同心环电极施加的静电应力,密度匹配的电绝缘浴中的导电圆柱形液桥稳定在瑞利-高原 (RP) 极限之外。当细长 S=L/2R 超过 π 时,在真实或模拟零重力下,长度为 L 和半径为 R 的圆形液体圆柱体变得不稳定。初始不稳定性涉及桥的所谓 (2, 0) 模式的增长,其中一侧变薄而另一侧变圆。模式传感光学系统检测 (2, 0) 模式的增长,模拟反馈系统将适当的电压施加到位于桥端附近的一对同心环电极,以抵消 (2, 0) 模式的增长。 , 0) 模式并防止桥的断裂。导电桥在接地的金属盘之间形成。测试了三种反馈算法,发现每种算法都能够使桥梁稳定得远远超出 RP 限制。所有三种算法都稳定...