Dynamics of two interfaces in a hybrid system with jump-type heterogeneity
Dynamics of two interfaces in a hybrid system with jump-type heterogeneity
复制标题
具有跳跃型异质性的混合系统中两个界面的动力学
DOI:
10.1007/s13160-013-0100-x
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发表时间:
2013
期刊:
影响因子:
--
通讯作者:
T.Teramoto
中科院分区:
文献类型:
--
作者:
K.Nishi;Y.Nishiura;T.Teramoto
We consider the dynamics of two interfaces that interact through a continuous medium with spatial heterogeneity. The dynamics of interface positions is governed by ordinary differential equations (ODEs), whereas that of the continuous field by a partial differential equation. The resulting mixed ODE-PDE system, which we call a hybrid system (HS), is derived as a singular limit of a certain bistable reaction-diffusion system (PDE), describing the dynamics of traveling pulses of front-back type. First, the traveling pulse dynamics in the heterogeneous medium is numerically studied both for the bistable reaction-diffusion system and for the hybrid system. Then, the hybrid system is analyzed to clarify the underlying mechanisms for the pulse behavior observed. In particular, we carry out a center manifold reduction for the hybrid system, which reveals not only the supercriticality of Hopf bifurcations but also the mechanism for sliding motion of an oscillating pulse observed in the heterogeneous medium.
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DOI:
--
发表时间:
2007
期刊:
Physical Review E 76
影响因子:
--
作者:
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通讯作者:
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影响因子:
2.8
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期刊:
SIAM J. Appl. Dyn. Syst.
影响因子:
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1995
期刊:
Physica D: Nonlinear Phenomena
影响因子:
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通讯作者:
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--
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通讯作者:
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