Issue
Europhys. Lett.
Volume 76, Number 6, December 2006
Page(s) 1109 - 1115
Section Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics
DOI http://dx.doi.org/10.1209/epl/i2006-10391-2
Published online 23 November 2006
Europhys. Lett., 76 (6), pp. 1109-1115 (2006)
DOI: 10.1209/epl/i2006-10391-2

The effect of mechanical deformation on spiral turbulence

H. Zhang1, B.-W. Li1, Z.-M. Sheng1, Z. Cao2 and G. Hu3, 2

1  Zhejiang Institute of Modern Physics and Department of Physics Zhejiang University - Hangzhou 310027, PRC
2  Department of Physics, and The Beijing-Hong Kong-Singapore Joint Centre for Nonlinear and Complex Systems (Beijing), Beijing Normal University Beijing 100875, PRC
3  Chinese Center for Advanced Science and Technology (World Laboratory) Beijing 8730, PRC

bwelllee@zju.edu.cn
ganghu@bnu.edu.cn.

received 28 June 2006; accepted in final form 23 October 2006
published online 23 November 2006

Abstract
The behavior of spiral turbulence in mechanically deformed excitable media is investigated. Numerical simulations show that when the forcing frequency is chosen around the characteristic frequency of the system, complicated spiral turbulence may be quenched within a shorter evolution time, compared to the case free of mechanical deformation. It is shown that the observed phenomenon occurs due to enhancing the drift of spiral tips induced by mechanical deformation.

PACS
47.54.-r - Pattern selection; pattern formation.

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