限区间上的时间分数阶电报方程的解析解

ANALYTIC SOLUTION FOR THE TIME-FRACTIONAL TELEGRAPH EQUATION DEFINED IN A BOUNDED DOMAIN

  • 摘要: 考虑一类时间分数阶电报方程,它是由传统的电报方程推广而来,即时间一阶、二阶导数分别用 \alpha\in(\frac12,1, 2\alpha\in(1,2阶Caputo导数代替. 利用空间有限的sine或cosine变换及时间Laplace变换,给出了该方程有限区间上带Dirichlet和Neumann边界条件的两类初边值问题的解析解. 该解由Mittag-Leffler函数的级数形式给出.

     

    Abstract: In this paper, we discuss the so-called time-fractional telegraph equation. It is a generalization of the classical telegraph equation in case the first- and two-order time derivatives are replaced with Caputo derivatives of order \alpha\in(\frac12,1, 2\alpha\in(1,2. By using the spatial finite sine and cosine transform, and the temporal Laplace transform, the existence of the analytic solutions of its initial-boundary problems in a boundedspace domain with Dirichlet and Neumann boundary conditions is derived. The analytic solutions are given in the form of series of the Mittag-Leffler functions.

     

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