Open Access激发介质中螺旋波的波尖运动
Author(s) -
LIU SHEN-QUAN,
LU QI-SHAO,
Qi Wang
Publication year - 1998
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.47.1057
Subject(s) - spiral (railway) , physics , motion (physics) , spiral wave , classical mechanics , equations of motion , tangent , front (military) , mechanics , geometry , mathematical analysis , mathematics , meteorology
We have studied the motion law of spiral waves in two-dimensional excitable media. The motion of the wave front of spiral waves is divided into two parts, i.e., those along the tangent and the normal directions, and the motion equations in the two directions are obtained with the help of the perburbation method. When these equations are used to analyse the spiral tip, the basic motion law of the spiral tip and the structures of twisted rings and long twisted chains are obtained. When these equations are used to analyses the wave front and its disturbance, the result not only shows ordinary spiral shapes but also explains the super-spiral and the double-spiral structures.