数学物理学报(英文版) ›› 2021, Vol. 41 ›› Issue (2): 381-396.doi: 10.1007/s10473-021-0204-3

• 论文 • 上一篇    下一篇

THE TWO-LEVEL STABILIZED FINITE ELEMENT METHOD BASED ON MULTISCALE ENRICHMENT FOR THE STOKES EIGENVALUE PROBLEM

文娟1,2, 黄鹏展3, 何雅玲1,2   

  1. 1. Key Laboratory of Thermo-Fluid Science and Engineering of Ministry of Education, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China;
    2. School of Sciences, Xi'an University of Technology, Xi'an 710048, China;
    3. College of Mathematics and System Sciences, Xinjiang University, Urumqi 830046, China
  • 收稿日期:2019-04-12 修回日期:2020-04-23 出版日期:2021-04-25 发布日期:2021-04-29
  • 通讯作者: Juan WEN E-mail:zhongnanjicuan@163.com
  • 作者简介:Pengzhan HUANG,E-mail:hpzh007@yahoo.com;Ya-Ling HE,E-mail:yalinghe@mail.xjtu.edu.cn
  • 基金资助:
    This work was supported by the National Key R&D Program of China (2018YFB1501001), the NSF of China (11771348), China Postdoctoral Science Foundation (2019M653579)

THE TWO-LEVEL STABILIZED FINITE ELEMENT METHOD BASED ON MULTISCALE ENRICHMENT FOR THE STOKES EIGENVALUE PROBLEM

Juan WEN1,2, Pengzhan HUANG3, Ya-Ling HE1,2   

  1. 1. Key Laboratory of Thermo-Fluid Science and Engineering of Ministry of Education, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China;
    2. School of Sciences, Xi'an University of Technology, Xi'an 710048, China;
    3. College of Mathematics and System Sciences, Xinjiang University, Urumqi 830046, China
  • Received:2019-04-12 Revised:2020-04-23 Online:2021-04-25 Published:2021-04-29
  • Contact: Juan WEN E-mail:zhongnanjicuan@163.com
  • About author:Pengzhan HUANG,E-mail:hpzh007@yahoo.com;Ya-Ling HE,E-mail:yalinghe@mail.xjtu.edu.cn
  • Supported by:
    This work was supported by the National Key R&D Program of China (2018YFB1501001), the NSF of China (11771348), China Postdoctoral Science Foundation (2019M653579)

摘要: In this paper, we first propose a new stabilized finite element method for the Stokes eigenvalue problem. This new method is based on multiscale enrichment, and is derived from the Stokes eigenvalue problem itself. The convergence of this new stabilized method is proved and the optimal priori error estimates for the eigenfunctions and eigenvalues are also obtained. Moreover, we combine this new stabilized finite element method with the two-level method to give a new two-level stabilized finite element method for the Stokes eigenvalue problem. Furthermore, we have proved a priori error estimates for this new two-level stabilized method. Finally, numerical examples confirm our theoretical analysis and validate the high effectiveness of the new methods.

关键词: Two-level, multiscale finite element method, $P_{1}/P_{1}$ elements, the Stokes eigenvalue problem

Abstract: In this paper, we first propose a new stabilized finite element method for the Stokes eigenvalue problem. This new method is based on multiscale enrichment, and is derived from the Stokes eigenvalue problem itself. The convergence of this new stabilized method is proved and the optimal priori error estimates for the eigenfunctions and eigenvalues are also obtained. Moreover, we combine this new stabilized finite element method with the two-level method to give a new two-level stabilized finite element method for the Stokes eigenvalue problem. Furthermore, we have proved a priori error estimates for this new two-level stabilized method. Finally, numerical examples confirm our theoretical analysis and validate the high effectiveness of the new methods.

Key words: Two-level, multiscale finite element method, $P_{1}/P_{1}$ elements, the Stokes eigenvalue problem

中图分类号: 

  • 35Q30