Adjustment of spiral drift by a travelling wave perturbation

作者:Wu, Ningjie*; Gao, Hongjun; Ma, Jun; Ying, Heping
来源:Nonlinear Dynamics, 2012, 67(1): 159-164.
DOI:10.1007/s11071-011-9967-8

摘要

We apply a velocity-field approach to investigate the interaction between spiral waves and the travelling wave modulation of system excitability which leads to a prediction: the direction of the straight-line drift of spiral waves is linearly adjusted by the propagation direction of the travelling waves. Direct numerical computations of the Oregonator model and the formulas of drift-velocity field confirm the validity and robustness of our theoretical prediction.