吉林大学学报(理学版) ›› 2024, Vol. 62 ›› Issue (2): 293-0301.

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 一种三维Poisson-Nernst-Planck方程的虚单元计算

丁聪1, 刘杨2,  阳莺1, 沈瑞刚1   

  1. 1. 桂林电子科技大学 数学与计算科学学院, 广西应用数学中心(GUET), 广西高校数据分析与计算重点实验室, 广西 桂林 541004; 2. 湘潭大学 数学与计算科学学院, 湖南 湘潭 411105
  • 收稿日期:2023-06-27 出版日期:2024-03-26 发布日期:2024-03-26
  • 通讯作者: 阳莺 E-mail:yangying@lsec.cc.ac.cn

Virtual Element Computation for a Three-Dimensional Poisson-Nernst-Planck Equations

DING Cong1, LIU Yang2, YANG Ying1, SHEN Ruigang1   

  1. 1. Guangxi Colleges and Universities Key Laboratory of Data Analysis and Computation, Guangxi Applied Mathematics Center (GUET), School of Mathematics and Computing Science, Guilin University of Electronic Technology, Guilin 541004, Guangxi Zhuang Autonomous Region, China; 2. School of Mathematics and Computational Science, Xiangtan University, Xiangtan 411105, Hunan Province, China
  • Received:2023-06-27 Online:2024-03-26 Published:2024-03-26

摘要: 利用虚单元方法在多面体网格上求解一种三维稳态Poisson-Nernst-Planck(PNP)方程, 并给出PNP方程的虚单元离散形式, 推导电势方程及离子浓度方程的刚度矩阵与荷载向量的矩阵表达式. 数值实验结果表明, 在3种不同的多面体网格下实现了PNP方程的虚单元计算, 数值解在L2和H1范数下均达到最优阶.

关键词: Poisson-Nernst-Planck方程, 虚单元方法, 多面体网格, 三维

Abstract: The virtual element method was used to solve a three-dimensional steady-state Poisson-Nernst-Planck (PNP) equations on polyhedral meshes. The virtual element discrete forms of the PNP equations were given, and the matrix expressions of the stiffness matrix and the load vector of the electric potential equation and ion concentration equation were derived. The numerical experimental results show that the virtual element computation of PNP equations is realized in three different polyhedral meshes, and the numerical solutions reach the optimal order in both L2 and H2 norms.

Key words: Poisson-Nernst-Planck equation, virtual element method, polyhedral mesh, three-dimension

中图分类号: 

  • O241.82