Figure 6

The order of convergence for stabilized finite element scheme using changing mesh for test 2: the error order of \(L^{2} \)-norm for \(\mathbf{K}=0.1\mathbb{I} \) (top-left), \(\mathbf{K}=0.01\mathbb{I} \) (top-middle), \(\mathbf{K}=0.001\mathbb{I} \) (top-right); the error order of \(H^{1} \)-norm for \(\mathbb{K}=0.1\mathbb{I} \) (down-left), \(\mathbf{K}=0.01\mathbb{I} \) (down-middle), \(\mathbf{K}=0.001 \mathbb{I} \) (down-right)