Numerical solution of nonlinear differential boundary value problems using adaptive non-overlapping domain decomposition method

This work aims is to study a nonlinear second-order boundary value differential elliptic problem in one dimension where the nonlinearity concerns the solution and its first derivative. We assume that the source term can be non-smooth and the nonlinearity can grow faster than quadratic. First, we sho...

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Veröffentlicht in:Applicable analysis Jg. 101; H. 6; S. 2044 - 2065
Hauptverfasser: Naceur, Nahed, Khenissi, Moez, Roche, Jean R.
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Abingdon Taylor & Francis 13.04.2022
Taylor & Francis Ltd
Schlagworte:
Algorithms
Analysis of PDEs
Approximation
Boundary value problems
Decomposition
domain decomposition
Domain decomposition methods
finite elements
Iterative methods
Mathematics
Newton methods
Nonlinear equations
Nonlinear ODE's
nonlinear PDE's
Nonlinearity
Numerical Analysis
Numerical methods
variational method
nonlinear PDE's
Nonlinear ODE's
variational method
domain decomposition
finite elements
ISSN:0003-6811, 1563-504X
Online-Zugang:Volltext
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Zusammenfassung:This work aims is to study a nonlinear second-order boundary value differential elliptic problem in one dimension where the nonlinearity concerns the solution and its first derivative. We assume that the source term can be non-smooth and the nonlinearity can grow faster than quadratic. First, we show the existence of a non-negative weak solution if we assume the existence of a super-solution. Second, we present a numerical algorithm to compute an approximation of the non-negative weak solution. The proposed algorithm is decomposed in two steps, the first one is devoted to computing a super-solution, and in the second one, the algorithm computes a sequence of solutions of an intermediate problem obtained by using the Yosida approximation of the nonlinearity. This sequence converges to the non-negative weak solution of the nonlinear equation. The numerical method is an application of the Newton method to the discretized version of the problem, but at each iteration, the resulting system can be indefinite. To overcome this difficulty, we introduce an adaptive non-overlapping domain decomposition method.
Bibliographie:ObjectType-Article-1
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ISSN:0003-6811
1563-504X
DOI:10.1080/00036811.2020.1800649