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Zbl 1009.65085
Agrawal, Om P.
Solution for a fractional diffusion-wave equation defined in a bounded domain. (English)
[J] Nonlinear Dyn. 29, No.1-4, 145-155 (2002). ISSN 0924-090X; ISSN 1573-269X/e

Summary: A general solution is given for a fractional diffusion-wave equation defined in a bounded space domain. The fractional time derivative is described in the Caputo sense. The finite sine transform technique is used to convert a fractional differential equation from a space domain to a wavenumber domain. Laplace transform is used to reduce the resulting equation to an ordinary algebraic equation. Inverse Laplace and inverse finite sine transforms are used to obtain the desired solutions. The response expressions are written in terms of the Mittag-Leffler functions. For the first and the second derivative terms, these expressions reduce to the ordinary diffusion and wave solutions. Two examples are presented to show the application of the present technique. Results show that for fractional time derivatives of order 1/2 and 3/2, the system exhibits, respectively, slow diffusion and mixed diffusion-wave behaviors.

MSC 2000:: *65R20 Integral equations (numerical methods)
45K05 Integro-partial differential equations
44A10 Laplace transform

Keywords: fractional derivative; linear integro partial differential equation; fractional diffusion-wave equation; finite sine transform; Laplace transform

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Zentralblatt MATH Berlin [Germany]