| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Vortex Turbulence due to the Interplay of Filament Tension and Rotational Anisotropy |
| JIANG Mi, MA Ping |
| State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing 100871 |
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| Cite this article: |
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JIANG Mi, MA Ping 2009 Chin. Phys. Lett. 26 074703 |
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Abstract The mechanism of scroll wave turbulence is investigated in excitable media with rotational anisotropy. We adopt the Barkley model with heterogeneity in the diffusion constants. Through comparative numerical studies, we demonstrate the vortex turbulence results from the rotational anisotropy's cooperation with negative filament tension or competition with positive filament tension. The presence of rotational anisotropy can enlarge the parameter region leading to negative-tension induced wave turbulence in isotropic media.
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47.27.-i
47.54.-r
87.19.Hh
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Received: 07 April 2009
Published: 02 July 2009
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