Two efficient block preconditioners for the mass-conserved Ohta-Kawasaki equation
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| Format: | Preprint |
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2019
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| _version_ | 1866918096543940608 |
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| author | Zhang, Juan Li, Shifeng Jiang, Kai |
| author_facet | Zhang, Juan Li, Shifeng Jiang, Kai |
| contents | In this paper, we propose two efficient block preconditioners to solve the mass-conserved Ohta-Kawasaki equation with finite element discretization. We also study the spectral distribution of these two preconditioners, \textit{i.e.,} Schur complement preconditioner and the modified Hermitian and skew-Hermitian splitting (MHSS in short) preconditioner. Besides, Newton method and Picard method are used to address the implicitly nonlinear term. We rigorously analyze the convergence of Newton method. Finally, we offer numerical examples to support the theoretical analysis and indicate the efficiency of the proposed preconditioners for the mass-conserved Ohta-Kawasaki equation. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_1910_09297 |
| institution | arXiv |
| publishDate | 2019 |
| record_format | arxiv |
| spellingShingle | Two efficient block preconditioners for the mass-conserved Ohta-Kawasaki equation Zhang, Juan Li, Shifeng Jiang, Kai Numerical Analysis In this paper, we propose two efficient block preconditioners to solve the mass-conserved Ohta-Kawasaki equation with finite element discretization. We also study the spectral distribution of these two preconditioners, \textit{i.e.,} Schur complement preconditioner and the modified Hermitian and skew-Hermitian splitting (MHSS in short) preconditioner. Besides, Newton method and Picard method are used to address the implicitly nonlinear term. We rigorously analyze the convergence of Newton method. Finally, we offer numerical examples to support the theoretical analysis and indicate the efficiency of the proposed preconditioners for the mass-conserved Ohta-Kawasaki equation. |
| title | Two efficient block preconditioners for the mass-conserved Ohta-Kawasaki equation |
| topic | Numerical Analysis |
| url | https://arxiv.org/abs/1910.09297 |