吉林大学学报(理学版) ›› 2019, Vol. 57 ›› Issue (06): 1407-1410.

• 数学 • 上一篇    下一篇

基于有限元方法求解带有年龄结构的种群模型

郝永乐1, 左平2, 朱青1   

  1. 1. 周口师范学院 数学与统计学院, 河南 周口 466001; 2. 空军航空大学 基础部, 长春 130022
  • 收稿日期:2019-05-29 出版日期:2019-11-26 发布日期:2019-11-21
  • 通讯作者: 左平 E-mail:363509677@qq.com

Population Model with Age Structure Solvedby Finite Element Method 

HAO Yongle1, ZUO Ping2, ZHU Qing1   

  1. 1. School of Mathematics and Statistics, Zhoukou Normal University, Zhoukou 466001, Henan Province, China;
    2. Department of Foundation,  Aviation University  of Air Force, Changchun 130022, China
  • Received:2019-05-29 Online:2019-11-26 Published:2019-11-21
  • Contact: ZUO Ping E-mail:363509677@qq.com

摘要: 考虑带有年龄结构及随机扩散项种群模型的数值解问题. 首先, 对模型进行积分, 得到简化后的偏微分方程形式, 并给出其变分处理; 然后使用等分剖分作为有限区间的有限元方法对模型进行数值求解, 给出全离散格式及误差分析; 最后在数值模拟中给出种群模型的数值解及误差分析.

关键词: 种群模型, 有限元方法, 抛物方程, Crank-Nicoison格式

Abstract: We considered  the numerical solution of  population model with age structure and random diffusion term.  Firstly, we integrated the model, obtained  the simplified form of partial differential equation, and gave its  variational trentment. Secondly, we  used finite element method with equal partition as finite interval to solve model numerically, and gave  the full discrete form and error analysis. Finally,  we gave a numerical solution and error analysis of poulation  model in numerical simulation.

Key words: population model, finite element method, parabolic equation, CrankNicoison form

中图分类号: 

  • O241.82