阶跃初值条件解的完全分类: 流体力学中广义 Gardner 方程的分析与数值验证
张岩,郝惠琴,郭睿

The Complete Classification of Solutions to the Step Initial Condition: Analysis and Numerical Verification for the Generalized Gardner Equation in Fluid Mechanics
Yan Zhang,Huiqin Hao,Rui Guo
图31 正向和反向稀疏波, 参数如下: $ k_1 =6 $, $ k_2 =1 $, $ d =1 $, $ -\frac{k_1}{2k_2}=-3 $, $ u_{1}^{-} =-2 $, $ u_{1}^{+} =-1 $, $ u_{2}^{-} =-4 $, $ u_{2}^{+} =-5 $.