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Numerical investigation of the influence of companion drops on drop-on-demand ink jetting 被引量：3

Numerical investigation of the influence of companion drops on drop-on-demand ink jetting
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摘要 In this study we characterized and investigated the specific phenomenon of "companion drops" in the drop-ondemand(DOD) ink jetting process.A series of simulations based on a piezoelectric DOD printhead system is presented,adapting the volume-of-fluid(VOF) interface-capturing method to track the boundary evolution and model the interfacial physics.The results illustrate the causality between the generation of companion drops and droplet deviation behavior,as well as their close correlations with ink jetting straightness and printing accuracy.The characteristics of companion drops are summarized and compared with those of satellite drops.Also,a theoretical mechanism for the generation of companion drops is presented,and their effects and behaviors are analyzed and discussed.Finally,the effects of critical factors on the generation of companion drops are investigated and characterized based on variations in the printable pressure range.Recommendations are given for the suppression of companion drops and for the improvement of printing accuracy. In this study we characterized and investigated the specific phenomenon of ＂companion drops＂ in the drop-ondemand （DOD） ink jetting process. A series of simulations based on a piezoelectric DOD printhead system is presented, adapting the volume-of-fluid （VOF） interface-capturing method to track the boundary evolution and model the interfacial physics. The results illustrate the causality between the generation of companion drops and droplet deviation behavior, as well as their close correlations with ink jetting straightness and printing accuracy. The characteristics of companion drops are summarized and compared with those of satellite drops. Also, a theoretical mechanism for the generation of companion drops is presented, and their effects and behaviors are analyzed and discussed. Finally, the effects of critical factors on the generation of companion drops are investigated and characterized based on variations in the printable pressure range. Recommendations are given for the suppression of companion drops and for the improvement of printing accuracy.
作者 Hai-yun ZHANG Jin WANG Guo-dong LU
机构地区 Institution of Engineering and Computer Graphics
出处 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 SCIE EI CAS CSCD 2012年第8期584-595,共12页 浙江大学学报（英文版）A辑（应用物理与工程）
基金 Project supported by the National Key Technology R&D Program(No. 2011BAD01B03) the Key Project of Science and Technology Program of Zhejiang Province (No. 2009C11099) the Zhejiang Provincial Natural Science Foundation (No. Y1110230)
关键词 落下按需(国防部) 墨水 jetting 微滴偏差 同伴落下 计算液体动力学(CFD ) Volume-of-fluid (VOF ) 方法 Drop-on-demand （DOD） ink jetting, Droplet deviation, Companion drops, Computational fluid dynamics （CFD）,Volume-of-fluid （VOF） method
分类号 O35 [理学—流体力学]
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参考文献28

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Journal of Zhejiang University-Science A(Applied Physics & Engineering)
2012年 第8期

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