Numerical simulation and experimental research of electrospun polyacrylonitrile Taylor cone based on multiphysics coupling

In the electrospinning process, the Taylor cone, as the jet source, directly affects the jet movement and the quality of the fiber membrane. Therefore, to understand the formation mechanism of the Taylor cone intuitively, a multiphysics coupling model that comprehensively considers the gravitational...

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Bibliographic Details
Published in:e-Polymers 2023-02, Vol.23 (1), p.19166-78
Main Authors: Chen, Peng, Zhou, Qihong, Chen, Ge, Wang, Yuntao, Lv, Jinghu
Format: Article
Language:English
Subjects:
Carbon fibers
Coupling
Deformation
Droplets
Electric fields
Electrospinning
Fluid flow
Gravitational fields
Incompressible flow
level set
Mathematical models
Mechanical engineering
Membranes
Morphology
multiphysics
numerical simulation
Polyacrylonitrile
Process parameters
Research methodology
Simulation
Surface tension
Taylor cone
Viscosity
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Summary:In the electrospinning process, the Taylor cone, as the jet source, directly affects the jet movement and the quality of the fiber membrane. Therefore, to understand the formation mechanism of the Taylor cone intuitively, a multiphysics coupling model that comprehensively considers the gravitational field, electrostatic field, and fluid field is established, and numerical simulations are conducted in this study. First, we construct a level-set function and analyze the force of the droplet. The gravity, surface tension, and electric field force are coupled to the incompressible Navier–Stokes equation as volume forces, and the nonconservation of the droplet area is solved by approximating the Dirac function with a smooth function. Subsequently, the deformation of the electrospun polyacrylonitrile (PAN) Taylor cone under different process parameters is simulated. Finally, data obtained from the numerical simulation and the average diameter of the electrospun PAN fiber membrane are analyzed via gray relational analysis. The results show that the volume force is the key factor affecting the average diameter of the fiber membrane (the correlation is 0.934). This article provides an effective reference and basis for the analysis and control of the electrospinning process.
ISSN:1618-7229
2197-4586
1618-7229
DOI:10.1515/epoly-2022-8106