水平磁场中液态金属射流的三维数值研究

doi:10.7523/j.issn.2095-6134.2019.04.006

中国科学院大学学报 ›› 2019, Vol. 36 ›› Issue (4): 481-486.DOI: 10.7523/j.issn.2095-6134.2019.04.006

水平磁场中液态金属射流的三维数值研究

于星星¹, 张杰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:2018-03-05 修回日期:2018-04-17 发布日期:2019-07-15
通讯作者: 倪明玖
基金资助:
国家自然科学基金（51636009，11502193）和磁约束聚变能专项（2013GB114000）资助

3D numercial simulations of liquid metal jet under a horizontal magnetic field

YU Xingxing¹, ZHANG Jie², 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:2018-03-05 Revised:2018-04-17 Published:2019-07-15

摘要/Abstract

摘要： 磁场中液态金属射流的流动行为研究对聚变装置强磁场环境下液态金属第一壁的实现极为重要。对处于横向水平磁场中的液态金属竖直射流进行三维的直接数值模拟，主要对小We数情形射流在不同磁场强度下的破碎行为进行研究。模拟发现，在磁流体动力学效应下，液态金属射流的稳定性得到明显的增强，其破碎长度随着磁场强度的增大而增长。同时，液态金属射流在磁场中破碎后形成的液滴随着磁场强度的增大而逐渐减小。磁场强度越大，洛伦兹力使射流界面扰动波的波长变得越长。对于较大We数情形，磁场对射流的界面扰动影响更为明显。射流界面处的膨胀波及正弦波扰动由三维变为明显的二维状态，射流的稳定性也因此明显增强。

关键词: 磁场, 液态金属, 射流, 破碎

Abstract: The liquid metal jet under a horizontal magnetic field plays a significant role in the fusion reactor. 3D numerical simulations of the liquid jet under a horizontal magnetic field are performed in this study, and we mainly study the breakup of the liquid jet at the low Weber numbers under different magnetic fields. The stability of the liquid metal jet changes in the magnetic field. The breakup length of the liquid metal jet grows with the increase of magnetic field. Meanwhile, the droplets form when the liquid metal jet breaks up. The volume of the droplet decreases with the increase of magnetic field. As the magnetic field increases, the wavelength of the interfacial disturbance wave increases due to the Lorentz force. In the case of a large Weber number, the magnetic field exerts a great influence on the interfacial disturbance. At the surface of the liquid metal jet, the 3D dilatational wave and sinuous wave become the 2D ones under the vertical magnetic field. Therefore, the stability of the liquid metal jet is significantly enhanced.

Key words: magnetic field, liquid metal, liquid jet, break up

中图分类号:

O361.3

于星星, 张杰, 倪明玖. 水平磁场中液态金属射流的三维数值研究[J]. 中国科学院大学学报, 2019, 36(4): 481-486.

YU Xingxing, ZHANG Jie, NI Mingjiu. 3D numercial simulations of liquid metal jet under a horizontal magnetic field[J]. , 2019, 36(4): 481-486.

参考文献

[1] Wells W M. A system for handling diverter ion and energy flux based on a lithium droplet cloud[J]. Nuclear Technology-Fusion, 1981, 1(1):120-127.
[2] Kang W, Pan C, Xu Z. Application study of liquid metal free surface in fusion[J]. Science Technology and Engineering, 2006, 6(6):731-738.
[3] Maxwell J C. Statique expérimentale et théorique des Liquides soumis aux seules Forces moléculaires[J]. Nature, 1874, 10(242):119.
[4] Rayleigh L. On the capillary phenomena of jets[J]. Proceedings of the Royal Society of London, 1879, 29(196/199):71-97.
[5] Goedde E F, Yuen M C. Experiments on liquid jet instability[J]. Journal of Fluid Mechanics, 1970, 40(3):495-511.
[6] Alterman Z. Capillary instability of a liquid jet[J]. The Physics of Fluids, 1961, 4(8):955-962.
[7] Rutland D F, Jameson G J. A non-linear effect in the capillary instability of liquid jets[J]. Journal of Fluid Mechanics, 1971, 46(2):267-271.
[8] Tomotika S. On the instability of a cylindrical thread of a viscous liquid surrounded by another viscous fluid[J]. Proceedings of the Royal Society A, 1935, 150(870):322-337.
[9] Leib S J, Goldstein M E. The generation of capillary instabilities on a liquid jet[J]. Journal of fluid mechanics, 1986, 168:479-500.
[10] Eroglu H, Chigier N, Farago Z. Coaxial atomizer liquid intact lengths[J]. Physics of Fluids A:Fluid Dynamics, 1991, 3(2):303-308.
[11] Wu P K, Tseng L K, Faeth G M. Primary breakup in gas/liquid mixing layers for turbulent liquids[J]. Atomization and Sprays, 1992, 2(3):295-317.
[12] Lin S P, Reitz R D. Drop and spray formation from a liquid jet[J]. Annual Review of Fluid Mechanics, 1998, 30(1):85-105.
[13] Sterling A M, Sleicher C A. The instability of capillary jets[J]. Journal of Fluid Mechanics, 1975, 68(3):477-495.
[14] Miesse C C. Correlation of experimental data on the disintegration of liquid jets[J]. Industrial & Engineering Chemistry, 1955, 47(9):1690-1701.
[15] Oshima S, Yamane R, Mochimaru Y, et al. The shape of a liquid metal jet under a non-uniform magnetic field:fluids engineering[J]. JSME international journal, 1987, 30(261):437-448.
[16] Ruo A C, Chang M H, Chen F. Electrohydrodynamic instability of a charged liquid jet in the presence of an axial magnetic field[J]. Physics of Fluids, 2010, 22(4):1917.
[17] Davidson P A. Magnetic damping of jets and vortices[J]. Journal of Fluid Mechanics, 1995, 299:153-186.
[18] Popinet S. Gerris:a tree-based adaptive solver for the incompressible Euler equations in complex geometries[J]. Journal of Computational Physics, 2003, 190(2):572-600.
[19] Zhang J, Ni MJ. A consistent and conservative scheme for MHD flows with complex boundaries on an unstructured Cartesian adaptive system[J]. Journal of Computational Physics, 2014, 256(C):520-542.
[20] Wang J J, Zhang J, Ni M J, et al. Numerical study of single droplet impact onto liquid metal film under a uniform magnetic field[J]. Physics of Fluids, 2014, 26(12):122-129.
[21] Shibata K, Koshizuka S, Oka Y. Numerical analysis of jet breakup behavior using particle method[J]. Journal of Nuclear Science and Technology, 2004, 41(7):715-722.

水平磁场中液态金属射流的三维数值研究

3D numercial simulations of liquid metal jet under a horizontal magnetic field

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