Applied Mathematics and Mechanics (English Edition) ›› 2010, Vol. 31 ›› Issue (7): 815-826.doi: https://doi.org/10.1007/s10483-010-1316-9

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General solutions to a class of time fractional partial differential equations

黄凤辉1 郭柏灵2   

  1. 1. Department of Mathematics, School of Sciences, South China University of Technology, Guangzhou 510641, P. R. China;
    2. Institute of Applied Physics and Computational Mathematics, Beijing 100088, P. R. China
  • 收稿日期:2009-12-04 修回日期:2010-05-27 出版日期:2010-07-01 发布日期:2010-07-01

General solutions to a class of time fractional partial differential equations

 HUANG Feng-Hui1, GUO Bo-Ling2   

  1. 1. Department of Mathematics, School of Sciences, South China University of Technology, Guangzhou 510641, P. R. China;
    2. Institute of Applied Physics and Computational Mathematics, Beijing 100088, P. R. China
  • Received:2009-12-04 Revised:2010-05-27 Online:2010-07-01 Published:2010-07-01

摘要: A class of time fractional partial differential equations is considered, which includes a time fractional diffusion equation, a time fractional reaction-diffusion equation, a time fractional advection-diffusion equation, and their corresponding integer-order partial differential equations. The fundamental solutions to the Cauchy problem in a whole-space domain and the signaling problem in a half-space domain are obtained by using Fourier-Laplace transforms and their inverse transforms. The appropriate structures of the Green functions are provided. On the other hand, the solutions in the form of a series to the initial and boundary value problems in a bounded-space domain are derived by the sine-Laplace or cosine-Laplace transforms. Two examples are presented to show applications of the present technique.

Abstract: A class of time fractional partial differential equations is considered, which includes a time fractional diffusion equation, a time fractional reaction-diffusion equation, a time fractional advection-diffusion equation, and their corresponding integer-order partial differential equations. The fundamental solutions to the Cauchy problem in a whole-space domain and the signaling problem in a half-space domain are obtained by using Fourier-Laplace transforms and their inverse transforms. The appropriate structures of the Green functions are provided. On the other hand, the solutions in the form of a series to the initial and boundary value problems in a bounded-space domain are derived by the sine-Laplace or cosine-Laplace transforms. Two examples are presented to show applications of the present technique.

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