$\alpha$

$\frac{1}{h}$

$\frac{1}{\tau }$

$u-L^2$ 范数

收敛阶

$\delta -L^2$ 范数

收敛阶

10

10

1.1796E−01

--

4.6155E+00

--

0.1

20

20

3.1692E−02

1.8961

1.1909E+00

1.9545

40

40

7.9704E−03

1.9914

2.9183E-01

2.0288

10

10

1.1789E−01

--

4.6148E+00

--

0.3

20

20

3.1678E−02

1.8960

1.1908E+00

1.9543

40

40

7.9687E−03

1.9911

2.9197E-01

2.0280

10

10

1.1782E−01

--

4.6147E+00

--

0.5

20

20

3.1671E−02

1.8953

1.1919E+00

1.9530

40

40

7.8901E−03

1.9887

2.9333E-01

2.0226