Abstract
For the Stokes equation over 2D and 3D domains, explicit a posteriori and a priori error estimation are novelly developed for the finite element solution. The difficulty in handling the divergence-free condition of the Stokes equation is solved by utilizing the extended hypercircle method along with the Scott-Vogelius finite element scheme. Since all terms in the error estimation have explicit values, by further applying the interval arithmetic and verified computing algorithms, the computed results provide rigorous estimation for the approximation error. As an application of the proposed error estimation, the eigenvalue problem of the Stokes operator is considered and rigorous bounds for the eigenvalues are obtained. The efficiency of proposed error estimation is demonstrated by solving the Stokes equation on both convex and non-convex 3D domains.
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The first author is supported by Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B) 16H03950, 20H01820 and Grant-in-Aid for Scientific Research (C) 18K03411. The second author is supported by Grant-in-Aid for Scientific Research (C) 18K03434. The last author is supported by JST CREST Grant Number JPMJCR14D4, Japan.
The third author is Doctor course student in this affliction when he joined this research.
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Liu, X., Nakao, M.T., You, C. et al. Explicit a posteriori and a priori error estimation for the finite element solution of Stokes equations. Japan J. Indust. Appl. Math. 38, 545–559 (2021). https://doi.org/10.1007/s13160-020-00449-5
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DOI: https://doi.org/10.1007/s13160-020-00449-5
Keywords
- Stokes equation
- A posteriori error estimation
- A priori error estimation
- Finite element method
- Hypercircle method
- Eigenvalue problem