The Speed of Traveling Waves in a FKPP-Burgers System
The Speed of Traveling Waves in a FKPP-Burgers System
复制标题
FKPP-Burgers 系统中的行波速度
DOI:
10.1007/s00205-021-01660-5
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发表时间:
2021
影响因子:
2.5
通讯作者:
Henderson, Christopher
中科院分区:
文献类型:
--
作者:
Bramburger, Jason J.;Henderson, Christopher
We consider a coupled reaction–advection–diffusion system based on the Fisher-KPP and Burgers equations. These equations serve as a one-dimensional version of a model for a reacting fluid in which the arising density differences induce a buoyancy force advecting the fluid. We study front propagation in this system through the lens of traveling waves solutions. We are able to show two quite different behaviors depending on whether the coupling constantis large or small. First, it is proved that there is a thresholdunder which the advection has no effect on the speed of traveling waves (although the advection is nonzero). Second, whenis large, wave speeds must be at least. These results together give that there is a transition from pulled to pushed waves asincreases. Because of the complex dynamics involved in this and similar models, this is one of the first precise results in the literature on the effect of the coupling on the traveling wave solution. We use a mix of ordinary and partial differential equation methods in our analytical treatment, and we supplement this with a numerical treatment featuring newly created methods to understand the behavior of the wave speeds. Finally, various conjectures and open problems are formulated.
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DOI:
--
发表时间:
1997
期刊:
影响因子:
--
作者:
M. Chertkov;V. Yakhot
通讯作者:
V. Yakhot
影响因子:
3.5
作者:
Henderson, Christopher;Souganidis, Panagiotis E.
通讯作者:
Souganidis, Panagiotis E.
DOI:
10.1016/j.matpur.2022.09.004
发表时间:
2021-02
期刊:
Journal de Mathématiques Pures et Appliquées
影响因子:
--
作者:
Christopher Henderson
通讯作者:
Christopher Henderson
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
F. Hamel;Andrej Zlatoš
通讯作者:
Andrej Zlatoš
影响因子:
1.6
作者:
J. Mayo;A. Kerstein
通讯作者:
A. Kerstein