Comparing Numerical Methods for Solving Nonlinear Fractional Order Differential Equations 求解非线性分数阶微分方程的数值方法比较.pdf
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Comparing Numerical Methods
for Solving Nonlinear Fractional Order
Differential Equations
Farhad Farokhi, Mohammad Haeri, and Mohammad Saleh Tavazoei
Abstract This paper is a result of comparison of some available numerical methods
for solving nonlinear fractional order ordinary differential equations. These meth-
ods are compared according to their computational complexity, convergence rate,
and approximation error. The present study shows that when these methods are
applied to nonlinear differential equations of fractional order, they have different
convergence rate and approximation error.
1 Introduction
Differentialequations of fractional order have been the focus of many studies due
to their frequent appearance in various applications in physics, fluid mechanics,
biology, and engineering. Consequently, considerable attention has been given to
the solutions of fractional order ordinary differential equations, integral equations
and fractional order partial differential equations of physical interest. Number of
literatures concerning the application of fractional order differential equations in
nonlinear dynamics has been grown rapidly in the recent years [2, 3, 5, 12– 14, 20].
Most fractional differential equations do not have exact analytic solutions and
therefore, approximating or numerical techniques are generally applied. There are
many different numerical methods such as Predictor Corrector Method (PCM) [8],
Quadrature Methods (QM) [22], Kumar-Agrawal Method (KAM) [15], and Lubich
Method [ 17] which have been developed to solve the fractional differential equa-
tions. Many new ideas which try to solve these kinds of problems faster and in more
convenient way are Nested Memory Principle (NMP) and Fixed Length Integral
Principle (FLIP) [7, 10]. These methods are relatively new and provide an approxi-
mated solution both for linear and nonlinear equations. There are several papers in
F. Farok
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