摘要
为研究电流体电喷印中流体动力黏度、表面张力及电压等参数对喷印过程的影响,在前人对电流体动力学理论分析的基础上以质量分数为10%~20%的聚氧化乙烯为模拟材料,采用多物理场耦合软件COMSOL构建电流体动力学数学模型进行仿真验证。在电场力、液体内部黏性力和表面张力的作用下泰勒锥保持平衡,当电场力大于液体表面张力和黏性力时,液体破碎喷印形成锥射流。液体表面张力和动力黏度越大,喷印所需电场力就越大,相应时间锥射流的形成也就越慢。
Aiming at investigating the effects of hydrodynamic viscosity,surface tension,voltage and other parameters on the printing process in the electro-jet printing of electrofluid,polyethylene oxide with mass fraction of 10% to 20% was used as the simulation material based on the previous theoretical analysis of electro-hydro dynamics. The multi-physics coupling software COMSOL was used to construct the mathematical model of electro-hydro dynamics for simulation verification. The Taylor cone maintains its balance under the influence of the electric field force,the internal viscous force of the liquid and the surface tension. When the electric field force is greater than the liquid surface tension and the viscous force,the liquid breaks and prints to form a cone jet. The greater the surface tension and dynamic viscosity of the liquid,the greater the electric field force required for jet printing,and the slower the formation of the corresponding cone jet.
作者
吴海忠
陈洪立
乔欣
WU Haizhong;CHENG Hongli;QIAO Xin(School of Mechanical Engineering and Automation,Zhejiang Sei-Tech University,Hangzhou 310018,China;Engineering Research Center of Modern Textile Machinery ＆ Technology of Education Ministry,Hangzhou 310018,China;Department of Mechanical and Electrical Engineering,Xinjiang University Institute of Science and Technology,Akesu,Xinjiang Uygur Autonomous Region 843100,China;College of Mechanical Engineering,Zhejiang University of Technology,Hangzhou 310014,China)
出处
《轻工机械》
CAS
2018年第5期9-13,共5页
Light Industry Machinery
基金
浙江省自然科学基金(LY18E050025)
关键词
电流体动力学
电喷印
动力黏度
表面张力
多物理场耦合软件COMSOL
锥射流
EHD （ electro-hydro dynamics）
electro-jet printing
dynamic viscosity
surface tension
multi-physics coupling software COMSOL
cone jet
