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AIMS Mathematics

2020, Volume 5, Issue 6: 6211-6220. doi: 10.3934/math.2020399
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Research article

The modified quadrature method for Laplace equation with nonlinear boundary conditions

  • School of Mathematics, Chengdu Normal University, Chengdu, Sichuan, 611130, China
  • Received: 06 May 2020 Accepted: 29 July 2020 Published: 31 July 2020

  • MSC : 65N38, 65R20

  • Here, the numerical solutions for Laplace equation with nonlinear boundary conditions is studied. Based on the potential theory, the problem can be converted into a nonlinear boundary integral equation. The modified quadrature method is presented for solving the nonlinear equation, which possesses high accuracy order $O(h^3)$ and low computing complexities. A nonlinear system is obtained by discretizing the nonlinear equation and the convergence of numerical solutions is proved by the theory of compact operators. Moreover, in order to solve the nonlinear system, the Newton iteration is provided by using the Ostrowski fixed point theorem. Finally, numerical examples support the theoretical results.

    Citation: Hu Li. The modified quadrature method for Laplace equation with nonlinear boundary conditions[J]. AIMS Mathematics, 2020, 5(6): 6211-6220. doi: 10.3934/math.2020399

    Related Papers:

  • Here, the numerical solutions for Laplace equation with nonlinear boundary conditions is studied. Based on the potential theory, the problem can be converted into a nonlinear boundary integral equation. The modified quadrature method is presented for solving the nonlinear equation, which possesses high accuracy order $O(h^3)$ and low computing complexities. A nonlinear system is obtained by discretizing the nonlinear equation and the convergence of numerical solutions is proved by the theory of compact operators. Moreover, in order to solve the nonlinear system, the Newton iteration is provided by using the Ostrowski fixed point theorem. Finally, numerical examples support the theoretical results.


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  • © 2020 the Author(s), licensee AIMS Press. This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0)
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