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Pouria Assari

Pouria Assari

Academic rank: Associate Professor
ORCID:
Education: PhD.
ScopusId: 35253362500
HIndex:
Faculty: Faculty of Science
Address:
Phone: 08138213642

Research

Title
A MESHLESS LOCAL DISCRETE GALERKIN (MLDG) METHOD FOR SOLVING NONLINEAR WEAKLY SINGULAR INTEGRAL EQUATIONS
Type
JournalPaper
Keywords
Nonlinear integral equation,Weakly singular kernel, Discrete Galerkin method, Moving least squares (MLS), Error analysis
Year
2017
Journal University Politehnica of Bucharest Scientific Bulletin-Series A-Applied Mathematics and Physics
DOI
Researchers Pouria Assari ، Mehdi Dehghan

Abstract

This article describes a numerical method for solving nonlinear Fredholm integral equations of the second kind with weakly singular kernels. The scheme estimates the solution by the discrete Galerkin method based on the use of moving least squares (MLS) as a local approximation. In order to approximate the singular integrals appeared in the method, we introduced an accurate special quadrature formula. The proposed scheme is constructed on a set of scattered data and does not require any background mesh, so it is meshless. The method can be easily implemented and its algorithm is simple and effective to solve weakly singular integral equations. The error analysis of the method is provided. Finally, numerical examples are included to show the validity and efficiency of the new technique and confirm the theoretical error estimates.