阿姆斯特朗电解液液桥的实验现象及断裂机理研究  

Study on the Experimental Phenomenon and Breakup Mechanism of an Armstrong Electrolyte Liquid Bridge

作　　者：潘雪芹 胡曼 PAN Xueqin;HU Man(Department of Aeronautics and Astronautics,Fudan University,Shanghai 200433,China)

机构地区：[1]复旦大学航空航天系,上海200433

出　　处：《力学季刊》2021年第4期633-640,共8页Chinese Quarterly of Mechanics

摘　　要：阿姆斯特朗液桥是电流体力学领域中的一种有趣现象,它悬在空中抵抗重力流动的神奇状态引起了人们的广泛关注.近十几年来,去离子水液桥已经通过理论和实验得到深入研究,但是对于电解液液桥的研究依然十分有限.本文以Na_(2)SO_(4)电解液作为形成液桥的实验液体,利用高速摄相机和红外热像仪研究了电解液液桥的形成过程、焦耳效应、流动中的热气泡产生及其破碎导致的液桥断裂等现象,提出了不同于去离子水液桥的断裂机理,有助于进一步加深人们对液桥这一复杂现象的理解.Armstrong liquid bridge is an interesting phenomenon in the field of electrohydrodynamics. The mysterious phenomenon that it hangs in the air against gravity has been explored theoretically and experimentally in recent decades. However,these studies were mainly focused on the deionized water bridge, and the research on the electrolyte liquid bridge was very limited.In this paper, Na_(2)SO_(4) electrolyte is used to study the formation process, the Joule effect, the generation of hot bubbles in the flow and the breakup of the bridge caused by the breakup of bubbles via using a high-speed camera and an infrared thermal camera. A new breakup mechanism different from that of the deionized water bridge is proposed to further deepen the understanding of the complex phenomenon of liquid bridge.

关 键 词：液桥 电解液 电流体力学 断裂机理 气泡 

分 类 号：O361[理学—流体力学]