title: Wave grouping of a meandering spiral induced by Doppler effects and oscillatory dispersion.
abstract: A new type of meandering spiral pattern, in which the dense waves form groups while the sparse waves keep evenly spaced, is observed in a spatial open reactor using a ferroin-catalyzed Belousov-Zhabotinsky reaction. Such a phenomenon is related to both the Doppler effect of a meandering spiral and the oscillatory dispersion relation of the system. Simulation in the two-dimensional Oregonator reaction-diffusion model with an oscillatory dispersion relation gives very similar results.
authors.affiliation: School of Physics, Peking University, Beijing 100871, China.
authors.forename: Hui-Min
authors.initials: HM
authors.lastname: Liao
authors.forename: Lu-Qun
authors.initials: LQ
authors.lastname: Zhou
authors.forename: Chun-Xia
authors.initials: CX
authors.lastname: Zhang
authors.forename: Qi
authors.initials: Q
authors.lastname: Ouyang
mesh_terms: D003102:Colloids / Q000737:chemistry*; D003198:Computer Simulation; D044085:Microfluidics / Q000379:methods*; D008956:Models, Chemical; D009991:Oscillometry / Q000379:methods*; D010507:Periodicity
chemical_list: D003102:Colloids