Doppler instability of antispiral waves in discrete oscillatory reaction-diffusion media

This paper investigates antispiral wave breakup phenomena in coupled two-dimensional FitzHugh-Nagumo cells with self-sustained oscillation via Hopf bifurcation. When the coupling strength of the active variable decreases to a critical value, wave breakup phenomenon first occurs in the antispiral cor...

Full description

Saved in:
Bibliographic Details
Published inChinese physics B Vol. 19; no. 5; pp. 154 - 159
Main Author 钱郁 黄晓东 廖旭红 胡岗
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.05.2010
Subjects
Breakup
Doppler
Doppler effect
Fluid dynamics
Hopf分岔
Instability
Oscillations
Stability
Turbulence
不稳定
反应扩散
多普勒
Online AccessGet full text

Cover

More Information
Summary:This paper investigates antispiral wave breakup phenomena in coupled two-dimensional FitzHugh-Nagumo cells with self-sustained oscillation via Hopf bifurcation. When the coupling strength of the active variable decreases to a critical value, wave breakup phenomenon first occurs in the antispiral core region where waves collide with each other and spontaneously break into spatiotemporal turbulence. Measurements reveal for the first time that this breakup phenomenon is due to the mechanism of antispiral Doppler instability.
Bibliography:TN959.4
antispiral waves, break up, Doppler instability
O422
11-5639/O4
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ObjectType-Article-1
ObjectType-Feature-2
ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/19/5/050513