平面不可压缩Navier-Stokes方程五模系统的力学机理及能量演化
王贺元

Dynamical Mechanism and Energy Evolution of a Five-Modes System of the Navier-Stokes Equations For a Two-Dimensional Incompressible Fluid on a Torus
Heyuan Wang
图 11 $D_1$$D_2$的距离和与Casimir函数关于$r$的演化