Abstract
A stabilized mixed finite element method is proposed for solving the time-harmonic Maxwell’s equations, with the divergence constraint imposed by the multiplier in a weak sense. By a grad-div stabilization, for some lowest-order edge elements on nonaffine quadrilateral, hexahedral and prismatic grids, we prove a type of uniform convergence for the zero-frequency Maxwell’s equations, then prove the well-posedness and the convergence for the time-harmonic Maxwell’s equations. Numerical results confirm the theoretical results.
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Notes
Nédéléc’s two papers are titled with ‘mixed finite elements’.
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Acknowledgements
The authors would like to thank the anonymous referees’ valuable suggestions which have greatly helped us improve the presentation of this paper.
Funding
The authors are supported by National Natural Science Foundation of China (12261160361, 12371371, 11971366).
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Du, Z., Duan, H. A stabilized finite element method on nonaffine grids for time-harmonic Maxwell’s equations. Bit Numer Math 63, 47 (2023). https://doi.org/10.1007/s10543-023-00988-6
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DOI: https://doi.org/10.1007/s10543-023-00988-6
Keywords
- Maxwell’s equations
- Finite element method
- Grad-div stabilization
- Uniform convergence
- Edge element on nonaffine grid