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Table 6 Validation of the MMS procedure

From: Accuracy analysis of gradient reconstruction on isotropic unstructured meshes and its effects on inviscid flow simulation

Grid (a) grid cells

Inviscid vortex

Euler MMS

Grid (b) grid cells

Inviscid vortex

Euler MMS

L1 Error

OOA

L1 Error

OOA

L1 Error

OOA

L1 Error

OOA

20 × 20

1.45e-02

–

1.22e-03

–

800

1.38e-02

–

6.14e-04

–

40 × 40

3.11e-03

2.22

2.15e-04

2.50

3200

3.14e-03

2.14

1.60e-04

1.94

80 × 80

6.80e-04

2.19

4.78e-05

2.17

12,800

7.02e-04

2.16

4.00e-05

2.00

160 × 160

1.57e-04

2.11

1.16e-05

2.04

51,200

1.66e-04

2.08

9.94e-06

2.01

320 × 320

3.85e-05

2.03

2.86e-06

2.02

204,800

4.05e-05

2.04

2.47e-06

2.01

Grid (e) grid cells

Inviscid vortex

Euler MMS

Grid (f) grid cells

Inviscid vortex

Euler MMS

L1 Error

OOA

L1 Error

OOA

L1 Error

OOA

L1 Error

OOA

20 × 20

1.41e-02

–

1.89e-03

–

800

1.60e-02

–

2.62e-03

–

40 × 40

5.61e-03

1.33

8.79e-04

1.10

3200

5.04e-03

1.67

1.03e-03

1.35

80 × 80

1.74e-03

1.69

4.05e-04

1.12

12,800

1.76e-03

1.52

5.60e-04

0.88

160 × 160

7.53e-04

1.21

2.18e-04

0.89

51,200

7.06e-04

1.32

2.48e-04

1.18

320 × 320

3.60e-04

1.06

1.08e-04

1.01

204,800

3.76e-04

0.91

1.35e-04

0.88