Derivation and numerical validation of the fundamental solutions for constant and variable-order structural derivative advection–dispersion models
Various non-local structural derivative diffusion models have been proposed based on different kernel functions to describe the anomalous time dependence of the mean-squared displacements. In the present study, the fundamental solutions for constant and variable-order structural derivative advection...
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| Veröffentlicht in: | Zeitschrift für angewandte Mathematik und Physik 2020-08, Vol.71 (4), Article 135 |
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| creator | Wang, Fajie Cai, Wei Zheng, Bin Wang, Chao |
| description | Various non-local structural derivative diffusion models have been proposed based on different kernel functions to describe the anomalous time dependence of the mean-squared displacements. In the present study, the fundamental solutions for constant and variable-order structural derivative advection–dispersion models are achieved via scaling transformation and the generalized non-Euclidean Hausdorff fractal distance. Comparative numerical investigations of the structural derivative models have been conducted to reveal the influences of various kernels via the meshless method of fundamental solutions. Numerical results verify the validity of the derived fundamental solutions and the rationality of the employed numerical method for structural derivative advection–dispersion models. |
| doi_str_mv | 10.1007/s00033-020-01360-2 |
| format | Article |
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| subjects | Advection Dispersion Engineering Finite element method Kernel functions Mathematical Methods in Physics Mathematical models Meshless methods Numerical methods Theoretical and Applied Mechanics Time dependence |
| title | Derivation and numerical validation of the fundamental solutions for constant and variable-order structural derivative advection–dispersion models |
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