Transition from spirals to defect-mediated turbulence driven by a doppler instability.
A transition from rotating chemical spirals to turbulence is observed in experiments on the Belousov-Zhabotinsky reaction. The transition occurs when the waves near the spiral tip spontaneously break, generating defects. Measurements reveal that this defect-mediated turbulence is caused by the Doppler effect on the traveling waves. The observations are in good accord with numerical simulations and theory.
Ouyang
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Q
Department of Physics, Mesoscopic Physics Laboratory, Peking University, Beijing 100871, China.
Swinney
H L
HL
Li
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G
D004301:Doppler Effect; D008314:Malonates / Q000737:chemistry; D008954:Models, Biological; D008956:Models, Chemical; D008962:Models, Theoretical
D008314:Malonates; C030290:malonic acid