摘要
In this paper, the Fisher equation is analysed. One of its travelling wave solution is obtained by comparing it with KdV-Burgers （KdVB） equation. Its amplitude, width and speed are investigated. The instability for the higher order disturbances to the solution of the Fisher equation is also studied.
In this paper, the Fisher equation is analysed. One of its travelling wave solution is obtained by comparing it with KdV-Burgers （KdVB） equation. Its amplitude, width and speed are investigated. The instability for the higher order disturbances to the solution of the Fisher equation is also studied.
基金
Project partially supported by the National Natural Science Research Foundation for the Returned 0verseas Chinese Foundation of China （Grant Nos 10575082 and 10247008）, the Scientific Scholars of State Education Ministry of China, the Natural Science Foundation of Northwest Normal University of China （Grant No NWNU-KJCXGC-215）, and the Foundation of Royal Society K C. Wong Fellowship of UK.
