تقرير
Cost-optimal adaptive iterative linearized FEM for semilinear elliptic PDEs
| العنوان: | Cost-optimal adaptive iterative linearized FEM for semilinear elliptic PDEs |
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| المؤلفون: | Becker, Roland, Brunner, Maximilian, Innerberger, Michael, Melenk, Jens Markus, Praetorius, Dirk |
| المصدر: | ESAIM: Mathematical Modelling and Numerical Analysis (2023) |
| سنة النشر: | 2022 |
| المجموعة: | Computer Science Mathematics |
| مصطلحات موضوعية: | Mathematics - Numerical Analysis, 65N30, 65N50, 65N15, 65Y20, 41A25 |
| الوصف: | We consider scalar semilinear elliptic PDEs where the nonlinearity is strongly monotone, but only locally Lipschitz continuous. We formulate an adaptive iterative linearized finite element method (AILFEM) which steers the local mesh refinement as well as the iterative linearization of the arising nonlinear discrete equations. To this end, we employ a damped Zarantonello iteration so that, in each step of the algorithm, only a linear Poisson-type equation has to be solved. We prove that the proposed AILFEM strategy guarantees convergence with optimal rates, where rates are understood with respect to the overall computational complexity (i.e., the computational time). Moreover, we formulate and test an adaptive algorithm where also the damping parameter of the Zarantonello iteration is adaptively adjusted. Numerical experiments underline the theoretical findings. |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1051/m2an/2023036 |
| الوصول الحر: | http://arxiv.org/abs/2211.04123Test |
| رقم الانضمام: | edsarx.2211.04123 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1051/m2an/2023036 |
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