中国物理B ›› 2021, Vol. 30 ›› Issue (5): 58202-058202.doi: 10.1088/1674-1056/abd46e

• • 上一篇    下一篇

Unpinning the spiral waves by using parameter waves

Lu Peng(彭璐) and Jun Tang(唐军)   

  1. School of Materials and Physics, China University of Mining and Technology, Xuzhou 221116, China
  • 收稿日期:2020-10-07 修回日期:2020-11-10 接受日期:2020-12-17 出版日期:2021-05-14 发布日期:2021-05-14
  • 通讯作者: Jun Tang E-mail:tjuns1979@126.com
  • 基金资助:
    Project supported by the Fundamental Research Funds for the Central Universities of China (Grant No. 2020ZDPYMS33(JT)).

Unpinning the spiral waves by using parameter waves

Lu Peng(彭璐) and Jun Tang(唐军)   

  1. School of Materials and Physics, China University of Mining and Technology, Xuzhou 221116, China
  • Received:2020-10-07 Revised:2020-11-10 Accepted:2020-12-17 Online:2021-05-14 Published:2021-05-14
  • Contact: Jun Tang E-mail:tjuns1979@126.com
  • Supported by:
    Project supported by the Fundamental Research Funds for the Central Universities of China (Grant No. 2020ZDPYMS33(JT)).

摘要: The spiral waves anchored to heterogeneous areas are more difficult to control and eliminate than freely rotating ones in homogenous mediums. To eliminate pinned spiral waves, the resistant force should be provided to resist the pinning force. Other than advection field, we introduce parametric wave to play the role of providing resistant force. It is found that the parametric wave with large enough amplitude and proper frequency can unpin and eliminate the spiral wave successfully. The capability of parametric wave in providing resistant force is dependent on its amplitude and frequency sensitively. On the basis of parametric wave, the dependence of pinning force on the size and level of heterogeneity is further confirmed.

关键词: pinned spiral wave, heterogeneity, pinning force

Abstract: The spiral waves anchored to heterogeneous areas are more difficult to control and eliminate than freely rotating ones in homogenous mediums. To eliminate pinned spiral waves, the resistant force should be provided to resist the pinning force. Other than advection field, we introduce parametric wave to play the role of providing resistant force. It is found that the parametric wave with large enough amplitude and proper frequency can unpin and eliminate the spiral wave successfully. The capability of parametric wave in providing resistant force is dependent on its amplitude and frequency sensitively. On the basis of parametric wave, the dependence of pinning force on the size and level of heterogeneity is further confirmed.

Key words: pinned spiral wave, heterogeneity, pinning force

中图分类号:  (Pattern formation in reactions with diffusion, flow and heat transfer)

  • 82.40.Ck
05.65.+b (Self-organized systems) 89.75.Kd (Patterns)