Fully discrete finite element scheme for nonlocal parabolic problem involving the Dirichlet energy
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Abstract
In this article we present a finite element scheme for solving a nonlocal parabolic problem involving the Dirichlet energy. For time discretization, we use backward Euler method. The nonlocal term causes difficulty while using Newton’s method. Indeed, after applying Newton’s method we get a full Jacobian matrix due to the nonlocal term. In order to avoid this difficulty we use the technique given by Gudi (SIAM J Numer Anal 50(2):657–668, 2012) for elliptic nonlocal problem of Kirchhoff type. We discuss the well-posedness of the weak formulation at continuous as well as at discrete levels. We also derive a priori error estimates for both semi-discrete and fully discrete formulations. Results based on the usual finite element method are provided to confirm the theoretical estimates.
Keywords
Nonlocal Kirchhoff equation Backward Euler method Newton iteration methodMathematics Subject Classifications
65N12 65N15 65N22 35N30Notes
Acknowledgments
The authors acknowledge anonymous reviewers for many helpful suggestions and comments. Also, the authors would like to sincerely thank Dr. T. Gudi for his valuable suggestions. The second author’s work is supported by National Board for Higher Mathematics, DAE,(Grant No. 2/40(26)/2014/R&D-II/9598) India.
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