展向磁场作用下液态金属GaInSn多层膜流实验研究

doi:10.7523/j.issn.2095-6134.2019.03.004

中国科学院大学学报 ›› 2019, Vol. 36 ›› Issue (3): 320-325.DOI: 10.7523/j.issn.2095-6134.2019.03.004

展向磁场作用下液态金属GaInSn多层膜流实验研究

齐天煜¹, 阳倦成², 倪明玖¹

1. 中国科学院大学工程科学学院, 北京 100049;
2. 西安交通大学航天航空学院机械结构与强度国家重点实验室, 西安 710049

收稿日期:2018-02-27 修回日期:2018-04-10 发布日期:2019-05-15
通讯作者: 倪明玖
基金资助:
国家自然科学基金（51406193，51636009）和科技部项目（2013GB114000）资助

Experimental study on multilayer liquid GaInSn film flow under horizontal magnetic field

QI Tianyu¹, YANG Juancheng², NI Mingjiu¹

1. College of Engineering Science, University of Chinese Academy of Sciences, Beijing 100049, China;
2. State Key Laboratory for Strength and Vibration of Mechanical Structures, School of Aerospace Engineering, Xi'an Jiaotong University, Xi'an 710049, China

Received:2018-02-27 Revised:2018-04-10 Published:2019-05-15

摘要/Abstract

摘要： 研究在展向磁场作用下，液态金属GaInSn膜流在有机玻璃方腔多层通道中的流动特性。实验首次采用3台激光轮廓测量仪同时捕捉3个位置的液膜表面2D轮廓变化，实现液膜厚度测量。研究结果表明：在有机玻璃通道内，液膜表面波动随流动雷诺数的增大而明显增加；引入的展向磁场有效地抑制沿磁场方向的表面波动，而对沿流向的波动影响较小。在液膜平均厚度变化方面，随磁场的增强，液膜厚度在较小雷诺数时减小，在中等雷诺数时先减小后增大，在大雷诺数时单调增大。同时，磁场对流动的阻碍作用在大雷诺数下表现得较为明显。相比单层膜流实验结果，多层膜流装置有效地改善膜流铺展性，更易实现在表面的大面积铺展。

关键词: 磁场, 液态金属, 液膜流动, 多层通道

Abstract: In this work, the flow characteristics of the liquid GaInSn film in the multilayer channel in the organic glass cavity under the spanwise magnetic field are studied. Three laser level instruments are used to simultaneously capture the liquid 2D contour changes at three positions, and measure the thickness of film. The experimental results show that the surface fluctuation of the liquid film increases obviously with Reynolds number in the organic glass channel. The magnetic field effectively inhibits the surface fluctuation along the magnetic lines, but has little influence on the surface fluctuation along the streamwise direction. The thickness of the film decreases with the increase of the magnetic field at small Reynolds numbers, the thickness decreases first and then increases at the medium Reynolds numbers, and the thickness of film increases monotonically when Reynolds numbers are large. The larger Reynolds number is, the more obvious the effect of magnetic field's obstruction of the flow is. The results illustrate that the multilayer film flow device effectively improves the spreading of film flow and makes the spreading easier.

Key words: magnetic field, liquid metal, film flow, multilayer channel

中图分类号:

O361.3

齐天煜, 阳倦成, 倪明玖. 展向磁场作用下液态金属GaInSn多层膜流实验研究[J]. 中国科学院大学学报, 2019, 36(3): 320-325.

QI Tianyu, YANG Juancheng, NI Mingjiu. Experimental study on multilayer liquid GaInSn film flow under horizontal magnetic field[J]. , 2019, 36(3): 320-325.

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展向磁场作用下液态金属GaInSn多层膜流实验研究

Experimental study on multilayer liquid GaInSn film flow under horizontal magnetic field

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