Nonlinear Tempering of Subdiffusion with Chemotaxis, Volume Filling, and Adhesion

Nonlinear Tempering of Subdiffusion with Chemotaxis, Volume Filling, and Adhesion
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具有趋化性、体积填充和粘附的次扩散的非线性回火

DOI:
10.1051/mmnp/201510305
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发表时间:
2015
影响因子:
2.2
通讯作者:
Falconer S
Falconer S
中科院分区:
数学4区
文献类型:
--
作者:
Falconer S

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本文的目的是实现非线性粒子相互作用的亚扩散运输,涉及趋化性和非线性效应,如体积填充和粘附。本文系统地推导了具有依赖于化学吸引子强迫的非线性次扩散分数阶方程。我们考虑了主方程的扩散极限,并分析了非线性回火在稳态情况下的作用。我们研究了反常聚集的吸引力和趋化性之间的相互作用,以及由非线性反应引起的排斥力。我们发现,这种非线性相互作用可以防止异常聚集的现象时,当地的粒子浓度增长过高。我们还表明,非线性回火的效果是抑制中间subdiffusive行为,导致在一个非线性对流扩散方程在长时间限制。
The purpose of this paper is to implement nonlinear particle interactions into subdiffusive transport, involving chemotaxis and nonlinear effects such as volume filling and adhesion. We systematically derive nonlinear subdiffusive fractional equations with chemoattractant dependent forcing. We consider the diffusion limit of the master equation and analyse the role of nonlinear tempering in the stationary case. We study the interaction between attractive forces of anomalous aggregation and chemotaxis, with repulsive forces induced by nonlinear reactions. We show that this nonlinear interaction can prevent the phenomenon of anomalous aggregation when the local particle concentration grows too high. We also show that the effect of nonlinear tempering is to suppress the intermediate subdiffusive behaviour which results in a nonlinear advection diffusion equation in the long time limit.
DOI: 10.1103/physreve.85.051922
发表时间: 2012-05-29
期刊: PHYSICAL REVIEW E
影响因子: 2.4
作者:
Johnston, Stuart T.;Simpson, Matthew J.;Baker, Ruth E.
通讯作者: Baker, Ruth E.
DOI: 10.1088/0305-4470/18/12/006
发表时间: 1985
期刊: Journal of Physics A
影响因子: --
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S. Havlin;D. Movshovitz;B. Trus;G. Weiss
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发表时间: 2014
影响因子: 2
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次扩散、趋化性和异常聚集。
DOI: 10.1103/physreve.83.021110
发表时间: 2011
期刊: Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子: --
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DOI: 10.1103/physreve.87.052139
发表时间: 2012
期刊: Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子: --
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