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

IF 3.2 3区化学 Q2 POLYMER SCIENCE

e-Polymers Pub Date : 2023-01-01 DOI:10.1515/epoly-2022-8106

Peng Chen, Qihong Zhou, Ge Chen, Yuntao Wang, Jing Lv

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引用次数: 0

Abstract

Abstract 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.

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基于多物理耦合的电纺聚丙烯腈Taylor锥的数值模拟与实验研究

静电纺丝过程中，泰勒锥作为喷射源，直接影响喷射运动和纤维膜质量。因此，为了直观地理解泰勒锥的形成机理，本文建立了综合考虑引力场、静电场和流体场的多物理场耦合模型，并进行了数值模拟。首先，我们构造了一个水平集函数并分析了液滴的作用力。将重力、表面张力和电场力作为体积力耦合到不可压缩的Navier-Stokes方程中，用光滑函数近似Dirac函数求解液滴面积的非守恒问题。随后，对静电纺聚丙烯腈(PAN)泰勒锥在不同工艺参数下的变形进行了模拟。最后，通过灰色关联分析对数值模拟得到的数据和静电纺PAN纤维膜的平均直径进行了分析。结果表明，体积力是影响纤维膜平均直径的关键因素(相关系数为0.934)。本文为静电纺丝过程的分析和控制提供了有效的参考和依据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

e-Polymers 化学-高分子科学

CiteScore

5.90

自引率

10.80%

发文量

审稿时长

6.4 months

期刊介绍： e-Polymers is a strictly peer-reviewed scientific journal. The aim of e-Polymers is to publish pure and applied polymer-science-related original research articles, reviews, and feature articles. It includes synthetic methodologies, characterization, and processing techniques for polymer materials. Reports on interdisciplinary polymer science and on applications of polymers in all areas are welcome. The present Editors-in-Chief would like to thank the authors, the reviewers, the editorial staff, the advisory board, and the supporting organization that made e-Polymers a successful and sustainable scientific journal of the polymer community. The Editors of e-Polymers feel very much engaged to provide best publishing services at the highest possible level.