arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1306.1750math.AP
收藏

时间分数阶扩散方程的两个等价Stefan问题

Two equivalent Stefan's problems for the Time Fractional Diffusion Equation

Sabrina Roscani, Eduardo A. Santillan Marcus

摘要:

求解了分数阶扩散方程的两个Stefan问题,其中$ \al \in (0,1) $阶分数阶导数取Caputo意义.第一个具有关于$ x = 0 $的恒定条件,第二个呈现通量条件$ T_x (0, t) = \frac {q} {t ^ {\al/2}} $。证明了这两个问题之间的等价性,并分析了当$ \al \nearrow $ 1恢复热方程的Stefan条件时收敛于经典解的情况.

英文摘要:

Two Stefan's problems for the diffusion fractional equation are solved, where the fractional derivative of order $ \al \in (0,1) $ is taken in the Caputo's sense. The first one has a constant condition on $ x = 0 $ and the second presents a flux condition $ T_x (0, t) = \frac {q} {t ^ {\al/2}} $. An equivalence between these problems is proved and the convergence to the classical solutions is analysed when $ \al \nearrow $ 1 recovering the heat equation with its respective Stefan's condition.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑