Numerical Simulation of Motion and Distribution Characteristics for Electrospray Droplets

Electrospray is a typical technology to prepare large amounts of droplets at micro/nano scale. Establishing the relationship between the processing parameters and the motion and distribution characteristics for electrospray droplets is an effective approach to guide the uniform deposition of the ele...

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Bibliographic Details
Published in:Micromachines (Basel) 2023-02, Vol.14 (2), p.396
Main Authors: Jiang, Jiaxin, Qian, Zunxu, Wang, Xiang, Chen, Huatan, Kang, Guoyi, Liu, Yifang, Zheng, Gaofeng, Li, Wenwang
Format: Article
Language:English
Subjects:
Analysis
charged droplets
Direct numerical simulation
Droplets
Dynamic models
Electric fields
electrospray
Electrospraying
Gravity
Ions
Numerical analysis
numerical simulation
Physical properties
Process parameters
Simulation
Simulation methods
Simulation models
Spatial distribution
Velocity
Viscosity
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Summary:Electrospray is a typical technology to prepare large amounts of droplets at micro/nano scale. Establishing the relationship between the processing parameters and the motion and distribution characteristics for electrospray droplets is an effective approach to guide the uniform deposition of the electrospray membrane. In this paper, a dynamic model of electrospray droplets based on the fully resolved direct numerical simulation (FR-DNS) method was constructed, and the spatial motion behaviors of charged droplets were simulated. The coupling effect of electric field force, the charge repulsive force, and the gravity on the motion and distribution of electrospray droplets was studied, and the relationship between processing parameters including the applied voltage and distance from the nozzle to the collecting plate and the spatial distribution of charged droplets was clarified in a direct way. The simulation model provided a good approach for the quantitative description of the motion and distribution behaviors for electrospray droplets, which would help to guide the control of the electrospray jet ejection process.
ISSN:2072-666X
2072-666X
DOI:10.3390/mi14020396