分数扩散方程在阻尼和波浪之间进行插值

IF 2 3区物理与天体物理 Q2 PHYSICS, MATHEMATICAL

Journal of Physics A: Mathematical and Theoretical Pub Date : 2024-08-21 DOI:10.1088/1751-8121/ad6c02

Andy Manapany, Sébastien Fumeron, Malte Henkel

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引用次数: 0

摘要

研究了基于卡普托导数的时间分数扩散方程的解的行为，并分析了其对分数指数的依赖性。此外，还求解了时间分数对流扩散方程，并介绍了该方程在 Pennes 生物热模型中的应用。一般来说，短时间内的波状传输会在后期转变为扩散行为。

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Fractional diffusion equations interpolate between damping and waves

The behaviour of the solutions of the time-fractional diffusion equation, based on the Caputo derivative, is studied and its dependence on the fractional exponent is analysed. The time-fractional convection–diffusion equation is also solved and an application to Pennes bioheat model is presented. Generically, a wave-like transport at short times passes over to a diffusion-like behaviour at later times.

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来源期刊

Journal of Physics A: Mathematical and Theoretical 物理-物理：数学物理

CiteScore

4.10

自引率

14.30%

发文量

542

审稿时长

1.9 months

期刊介绍： Publishing 50 issues a year, Journal of Physics A: Mathematical and Theoretical is a major journal of theoretical physics reporting research on the mathematical structures that describe fundamental processes of the physical world and on the analytical, computational and numerical methods for exploring these structures.