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Volume 9, Number 1, 2019, Pages 261-270                                                                DOI:10.11948/2019.261
Galerkin-FEM for obtaining the numerical solution of the linear fractional Klein-Gordon equation
M. M. Khadr,Khadijah Mohammed Abualnaja
Keywords:Fractional Klein-Gordon equation, Galerkin finite element method, quadratic B-spline functions, stability analysis.
      In this paper, an efficient numerical method for solving the linear fractional Klein-Gordon equation (LFKGE) is introduced. The proposed method depends on the Galerkin finite element method (GFEM) using quadratic B-spline base functions and replaces the Caputo fractional derivative using $L2$ discretization formula. The introduced technique reduces LFKGE to a system of algebraic equations, which solved using conjugate gradient method. The study the stability analysis to the approximation obtained by the proposed scheme is given. To test the accuracy of the proposed method we evaluated the error norm $L_{2}$. It is shown that the presented scheme is unconditionally stable. Numerical example is given to show the validity and the accuracy of the introduced algorithm.
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