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Article
Error Analysis of a Fully Discrete Projection Method for Magnetohydrodynamic System
Numerical Methods for Partial Differential Equations
  • Qianqian Ding
  • Xiaoming He, Missouri University of Science and Technology
  • Xiaonian Long
  • Shipeng Mao
Abstract

In this paper, we develop and analyze a finite element projection method for magnetohydrodynamics equations in Lipschitz domain. A fully discrete scheme based on Euler semi-implicit method is proposed, in which continuous elements are used to approximate the Navier–Stokes equations and H(curl) conforming Nédélec edge elements are used to approximate the magnetic equation. One key point of the projection method is to be compatible with two different spaces for calculating velocity, which leads one to obtain the pressure by solving a Poisson equation. The results show that the proposed projection scheme meets a discrete energy stability. In addition, with the help of a proper regularity hypothesis for the exact solution, this paper provides a rigorous optimal error analysis of velocity, pressure and magnetic induction. Finally, several numerical examples are performed to demonstrate both accuracy and efficiency of our proposed scheme.

Department(s)
Mathematics and Statistics
Comments

National Natural Science Foundation of China, Grant 11871467

Keywords and Phrases
  • Error Analysis,
  • Finite Element Method,
  • Magnetohydrodynamics,
  • Nédélec Edge Element,
  • Projection Methods
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2023 Wiley, All rights reserved.
Publication Date
3-1-2023
Publication Date
01 Mar 2023
Citation Information
Qianqian Ding, Xiaoming He, Xiaonian Long and Shipeng Mao. "Error Analysis of a Fully Discrete Projection Method for Magnetohydrodynamic System" Numerical Methods for Partial Differential Equations Vol. 39 Iss. 2 (2023) p. 1449 - 1477 ISSN: 1098-2426; 0749-159X
Available at: http://works.bepress.com/xiaoming-he/100/