瞬时点源分数阶超常扩散的浓度分布 |
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引用本文: | 段俊生,徐明瑜. 瞬时点源分数阶超常扩散的浓度分布[J]. 应用数学和力学, 2003, 24(11): 1151-1156 |
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作者姓名: | 段俊生 徐明瑜 |
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作者单位: | 1.天津商学院, 基础部, 天津, 300134; |
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基金项目: | 国家自然科学基金资助项目(10272067),教育部博士点基金资助项目(1999042211) |
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摘 要: | 利用质量守恒条件、解的时空相似性、Mellin变换以及Fox函数理论,给出n维空间中(n=1,2,3)瞬时点源分数阶超常扩散浓度分布的Fox函数表示及解析表达式,并讨论其渐近性质.
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关 键 词: | 瞬时点源 超常扩散 分数阶微积分 Fox函数 Mellin变换 |
文章编号: | 1000-0887(2003)11-1151-06 |
收稿时间: | 2001-07-04 |
修稿时间: | 2001-07-04 |
The Concentration Distribution of Fractional Anomalous Diffusion Caused by an Instantaneous Point Source |
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Affiliation: | 1.Department of Basic Sciences, Tianjin University of Commerce, Tianjin 300134, P. R. China;2.Institute of Mathematics and Systematical Science, Shandong University, Jinan 250100, P. R. China |
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Abstract: | The Fox function expression and the analytic expression for the concentration distribution of fractional anomalous diffusion caused by an instantaneous point source in n-dimensional space(n=1, 2 or 3) are derived by means of the condition of mass conservation, the time-space similarity of the solution, Mellin transform and the properties of the Fox function. And the asymptotic behaviors for the solutions are also given. |
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Keywords: | instantaneous point source anomalous diffusion fractional calculus Fox function Mellin transform |
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