$\alpha$

$\beta$

H

$\Vert u-u_h\Vert$

收敛阶

$\Vert q-q_h\Vert$

收敛阶

0.25

1.75

1/100

2.7785E−02

-

2.4154E−01

-

1/400

7.0505E−03

1.9785

6.0185E−02

2.0048

1/900

3.1355E−03

1.9985

2.6624E−02

2.0115

1/1600

1.7597E−03

2.0080

1.4881E−02

2.0222

0.5

1.5

1/100

2.8002E−02

-

2.4514E−01

-

1/400

7.1161E−03

1.9763

6.1246E−02

2.0009

1/900

3.1707E−03

1.9938

2.7190E−02

2.0028

1/1600

1.7840E−03

1.9990

1.5271E−02

2.0053

0.75

1.25

1/100

2.8119E−02

-

2.4711E−01

-

1/400

7.1463E−03

1.9763

6.1736E−02

2.0009

1/900

3.1833E−03

1.9945

2.7393E−02

2.0041

1/1600

1.7903E−03

2.0006

1.5373E−02

2.0080