磁场作用下液态金属膜流铺展特性的实验研究  

Experimental Study on Spreading Characteristics of Liquid Metal Film Under Influence of Magnetic Field

作　　者：阳倦成[1,2] 齐天煜 刘佰奇[2] 倪明玖[2] 

机构地区：[1]西安交通大学航天航空学院机械结构强度与振动国家重点实验室,西安710049 [2]中国科学院大学工程科学学院,北京100049

出　　处：《工程热物理学报》2017年第9期1917-1922,共6页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No.51406193);博士后基金(No.2106M592779);科技部ITER专项(No.2013GB114002)

摘　　要：本文采用自行搭建的一套液态镓铟锡回路,通过合理地设计液膜生成装置,开展了考虑液膜出口流速、水平磁场强度影响的金属液膜铺展特性实验研究。实验中采用高速摄像法并引入测量微小位移的高精度激光位移传感器获得了大量的金属液膜厚度特征数据。实验结果表明:金属液膜的波动特性随着Re数的增加而逐渐增大,波动从二维波转变成三维波,且高频率的波动逐渐占主导地位,而磁场的增强具有使液膜表面波趋于稳定的效果。In the present paper, we build a home-made liquid GaInSn loop and design a suitable liquid film generator to conduct the spreading characteristics of liquid film flows with the influence of inlet velocity and magnitude of magnetic field. The high-speed camera and high precision laser displacement sensor are used to get plenty of thickness data on liquid film. Experimental data show that with the increase of Reynolds number, the fluctuation of liquid fihn surface increases, the surface waves change from 2D model into 3D model, and the high frequency fluctuation plays the leading role, while the increase of magnitude of magnetic field reduce the surface waves, and stabilize the film flOWS.

关 键 词：金属液膜 磁流体力学 表面波动 铺展性 

分 类 号：O361.3[理学—流体力学]