基于磁补偿的液氧悬浮可视化验证实验研究  

Visual Verification Experiment of Liquid Oxygen Suspension Based on the Magnetic Compensation

作　　者：程鑫 黄永华[1] 吴静怡[1] 张国庆[2] 耑锐 张亮 卜劭华 CHENG Xin;HUANG Yonghua;WU Jingyi;ZHANG Guoqing;ZHUAN Rui;ZHANG Liang;BU Shaohua(Institute of Refrigeration and Cryogenics,Shanghai Jiao Tong University,Shanghai 200240,China;Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China;Shanghai Aerospace System Engineering Institute,Shanghai 201108,China)

机构地区：[1]上海交通大学制冷与低温工程研究所,上海200240 [2]中国科学院高能物理研究所,北京100049 [3]上海宇航系统工程研究所,上海201108

出　　处：《真空与低温》2020年第3期204-210,共7页Vacuum and Cryogenics

基　　金：国家自然科学基金(51676118);上海航天先进技术联合研究基金(USCAST2019-4)。

摘　　要：利用液氧的顺磁特性,以低温超导磁体为受控磁场发生器,设计了一套磁补偿低温液氧悬浮可视化验证性实验系统。通过改变超导线圈电流强度,实现了大小适当且持续稳定的磁场力用于补偿液氧重力,观察到氧气泡在最佳磁补偿点处的微重力悬浮现象,捕捉到微重力液氧气液界面处的气泡成型、脱离和相界面变化特征,展示出微重力下表面张力的主导作用,验证了通过磁场补偿实现地面研究液氧微重力环境下相关机制的可行性。Based on the paramagnetic characteristics of liquid oxygen,a set of visual verification experimental system for liquid oxygen suspension by magnetic compensation was designed with a superconducting magnet as the controllable magnetic field provider. By varying the current in the superconducting coil,a suitable and continuously stable magnetic force could be achieved to compensate the gravity of the fluid. The microgravity suspension phenomenon of liquid oxygen and the bubbles was observed at the optimal magnetic compensation point. The process of bubble generation and detach- ment as well as the characteristics at the gas-liquid phase interface of liquid oxygen under magnetic compensation micro- gravity had been recorded. The results qualitatively demonstrate the dominant role of surface tension under microgravity, and also verify the feasibility of studying the mechanism of liquid oxygen in microgravity environment on the ground by magnetic field compensation.

关 键 词：磁补偿 可视化 微重力 液氧 气液界面 

分 类 号：O513[理学—低温物理]