An efficient numerical scheme for solving a general class of fractional differential equations via fractional-order hybrid Jacobi functions. (English) Zbl 1532.65115
Summary: We introduce a numerical algorithm based on the hybrid of block-pulse functions and fractional-order Jacobi polynomials in order to solve fractional differential equations. The fractional derivative is described in the Caputo sense. The Riemann-Liouville fractional integral operator for these basis functions is constructed. This result together with the shifted Gauss-Chebyshev collocation points are utilized to reduce the original problem to a system of nonlinear algebraic equations. By means of solving the given system, the numerical solution of the main problem is derived. Then, the method is applied for solving the Bagley-Torvik initial and boundary value problems. After that, an error estimation is presented for the expansion of a given function based on the fractional-order basis functions. Finally, for demonstrating the precision and good performance of the new method, several numerical examples are considered and the results are compared with the exact or approximate solutions obtained by other existing techniques.
MSC:
| 65N35 | Spectral, collocation and related methods for boundary value problems involving PDEs |
| 65N15 | Error bounds for boundary value problems involving PDEs |
| 41A50 | Best approximation, Chebyshev systems |
| 33C45 | Orthogonal polynomials and functions of hypergeometric type (Jacobi, Laguerre, Hermite, Askey scheme, etc.) |
| 65F05 | Direct numerical methods for linear systems and matrix inversion |
| 74F10 | Fluid-solid interactions (including aero- and hydro-elasticity, porosity, etc.) |
| 74K20 | Plates |
| 35Q74 | PDEs in connection with mechanics of deformable solids |
| 35R11 | Fractional partial differential equations |
Keywords:
fractional differential equations; fractional-order hybrid functions; Bagley-Torvik equation; error boundReferences:
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