Dynamics of Front Driven by Convection Field in Bistable Media

The front dynamics driven by a convection field in a model of FitzHugh-Nagumo type is studied both analytieMly and numerically. Saddle-node bifurcation induced by the convection field is found by using a singular perturbation analysis of front solutions. Convection field accelerates the B1och front...

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Veröffentlicht in:	Communications in theoretical physics 2014-05, Vol.61 (5), p.645-648
1. Verfasser:	贺亚峰宫卫华董丽芳
Format:	Artikel
Sprache:	eng
Schlagworte:	Convection Convection modes Dynamic tests Dynamics Mathematical analysis Mathematical models Propagation Singular perturbation 传播动力学双稳态媒体对流场摄动分析模型驱动鞍结分岔
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Zusammenfassung:	The front dynamics driven by a convection field in a model of FitzHugh-Nagumo type is studied both analytieMly and numerically. Saddle-node bifurcation induced by the convection field is found by using a singular perturbation analysis of front solutions. Convection field accelerates the B1och front propagating opposite the direction of convection field, but inhibits the Bloch front propagating along the direction of convection field. In addition convection field drives Ising front to travel opposite the direction of convection field.
ISSN:	0253-6102 1572-9494
DOI:	10.1088/0253-6102/61/5/18