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Numerical methods for the solution of partial differential equations of fractional order. (English) Zbl 1047.76075
Summary: Anomalous diffusion is a possible mechanism underlying plasma transport in magnetically confined plasmas. To model this transport mechanism, fractional order space derivative operators can be used. Here, the numerical properties of partial differential equations of fractional order α, 1α2, are studied. Two numerical schemes, an explicit and a semi-implicit one, are used in solving these equations. Two different discretization methods of the fractional derivative operator have also been used. The accuracy and stability of these methods are investigated for several standard types of problems involving partial differential equations of fractional order.
MSC:
76M20Finite difference methods (fluid mechanics)
76X05Ionized gas flow in electromagnetic fields; plasmic flow
65R20Integral equations (numerical methods)