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- Title
A second-order backward differentiation formula for the numerical solution of Cahn–Hilliard–Hele–Shaw system.
- Authors
Wang, Xianxia; Nie, Yuanjing; Wang, Danxia
- Abstract
In this paper, a second-order, unconditionally stable numerical scheme for the Cahn–Hilliard–Hele–Shaw system is constructed, which combines the backward differentiation formula in time and the mixed finite element method in space. Based on the Lagrange multiplier approach, we develop the linear discretization for the nonlinear term, which is extremely efficient. By rigorous proofs and calculations, we prove the unique solvability of the numerical solution, the unconditional stability and the error estimates of the proposed scheme. Furthermore, some numerical tests are given on the temporal and spatial convergence rates, spinodal decomposition and energy decay, which are consistent with the results of the theoretical analysis.
- Subjects
NUMERICAL differentiation; FINITE element method; LAGRANGE multiplier
- Publication
Computational & Applied Mathematics, 2023, Vol 42, Issue 3, p1
- ISSN
0101-8205
- Publication type
Article
- DOI
10.1007/s40314-023-02280-3