利用差分流线扩散法和特征有限元方法对二维水沙数学模型进行了数值模拟,并给出了相应的误差分析.
The paper simulates the 2-d non-homogeneous current and silt sedimentation model by finite difference-streamline diffusion finite element method and characteristic finite element method.At last,by strict analysis,optimal H1-error estimates for the unknown functions are obtained.