Dynamics of liquid metal droplets and jets influenced by a strong axial magnetic field

Final LIMTECH Colloquium and International Symposium on Liquid Metal Technologies

材料科学;金属学

Hernández, D.^1 ; Karcher, Ch^1

Institute for Thermodynamics and Fluid Mechanics, Technische Universitat Ilmenau, Ilmenau

98684, Germany^1

关键词: Axial magnetic field;    Electromagnetic control;    Eutectic composition;    Fusion applications;    Liquid metal droplets;    Liquid metal flows;    Metallurgical process;    Strong magnetic fields;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/228/1/012010/pdf
DOI  :  10.1088/1757-899X/228/1/012010

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Non-contact electromagnetic control and shaping of liquid metal free surfaces is crucial in a number of higherature metallurgical processes like levitation melting and electromagnetic sealing, among others. Other examples are the electromagnetic bending or stabilization of liquid metal jets that frequently occur in casting or fusion applications. Within this context, we experimentally study the influence of strong axial magnetic fields on the dynamics of falling metal droplets and liquid metal jets. GaInSn in eutectic composition is used as test melt being liquid at room temperature. In the experiments, we use a cryogen-free superconducting magnet (CFM) providing steady homogeneous fields of up to 5 T and allowing a tilt angle between the falling melt and the magnet axis. We vary the magnetic flux density, the tilt angle, the liquid metal flow rate, and the diameter and material of the nozzle (electrically conducting/insulating). Hence, the experiments cover a parameter range of Hartmann numbers Ha, Reynolds numbers Re, and Weber numbers We within 0