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Experimental study of liquid aluminum droplet breakup characteristics based on a Drop-on-demand (DOD) magnetohydrodynamic actuation

文献类型：期刊论文

作者Tian, Sheng-Wei2,3; Sun, Su-Rong3; Lin, Xiao-Chen2,3; Geng, Jin-Yue1; Huang, He-Ji1; Wang, Hai-Xing2,3; Cao, Jin-Wen1; Meng, Xian1; Yan, Cong1; Meng X(孟显)
刊名ADDITIVE MANUFACTURING
出版日期2024-03-25
卷号84页码:13
关键词Droplet break up Magnetohydrodynamic (MHD) Drop-on-demand (DOD) Liquid metal 3D printing Additive manufacturing
ISSN号2214-8604
DOI10.1016/j.addma.2024.104131
通讯作者Sun, Su-Rong(ssr18@buaa.edu.cn) ; Wang, Hai-Xing(whx@buaa.edu.cn)
英文摘要In magnetohydrodynamic (MHD) drop-on-demand (DOD) actuation, Lorentz force generated in different excitation stages are exerted on the liquid metal jet to form a "push-pull" mechanism, which is crucial for generating accurate and repeatable metal droplets. In this study, the important parameters of the excitation current waveform in the magnetohydrodynamic (MHD) process, including the influence of the excitation voltage pulse width ratio and current amplitude on the velocity, energy, volume, and breakup length of aluminum droplets are studied. The conversion process of surface energy and kinetic energy during the formation and fall stage of liquid droplets is analyzed. The results show that the negative and positive excitation voltage pulse width ratio of the MHD pump has a significant effect on the droplet velocity, breakup time, size, and sphericity. The amplitude of the excitation current and Hartmann number has a significant impact on the generation of stable droplets. The results show that the single droplet ejection state can be achieved within the Ha number between 319.5 and 391.1. As the Ha number increases, the volume, length, kinetic energy and surface energy of the droplets at breakup time also increase. The size of droplets can be adjusted by changing the amplitude of excitation waveform.
WOS关键词MOLTEN-METAL DROPLETS ; NOZZLE DIAMETER ; TECHNOLOGY ; DEPOSITION ; SMALLER ; DRIVEN
资助项目National Natural Science Foundation of China[12175011] ; National Natural Science Foundation of China[12005010] ; National Natural Science Foundation of China[11735004] ; Fundamental Research Funds for the Central Universities[YWF-23-L-1221] ; State Key Laboratory of High -temperature Gas Dynamics, Chinese Academy of Sciences[2021KF08]
WOS研究方向Engineering ; Materials Science
语种英语
WOS记录号WOS:001229867800001
资助机构National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; State Key Laboratory of High -temperature Gas Dynamics, Chinese Academy of Sciences
源URL[http://dspace.imech.ac.cn/handle/311007/95438]  
专题力学研究所_高温气体动力学国家重点实验室
宽域飞行工程科学与应用中心
通讯作者Sun, Su-Rong; Wang, Hai-Xing
作者单位1.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China
2.Beihang Univ, Ningbo Inst Technol, Ningbo 315800, Peoples R China
3.Beihang Univ, Sch Astronaut, Beijing 100191, Peoples R China
推荐引用方式
GB/T 7714		 Tian, Sheng-Wei,Sun, Su-Rong,Lin, Xiao-Chen,et al. Experimental study of liquid aluminum droplet breakup characteristics based on a Drop-on-demand (DOD) magnetohydrodynamic actuation[J]. ADDITIVE MANUFACTURING,2024,84:13.
APA Tian, Sheng-Wei.,Sun, Su-Rong.,Lin, Xiao-Chen.,Geng, Jin-Yue.,Huang, He-Ji.,...&闫聪.(2024).Experimental study of liquid aluminum droplet breakup characteristics based on a Drop-on-demand (DOD) magnetohydrodynamic actuation.ADDITIVE MANUFACTURING,84,13.
MLA Tian, Sheng-Wei,et al."Experimental study of liquid aluminum droplet breakup characteristics based on a Drop-on-demand (DOD) magnetohydrodynamic actuation".ADDITIVE MANUFACTURING 84(2024):13.

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来源：力学研究所

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