TABLE 2B.
Computed drag error and rates of convergence for various number of grid points on the boundary (n = 75, 100, 125, and 150) for different values of viscosity = 80, 90, and 100
| Viscosity | Batchelor's drag | Error_75 | Rate | Error_100 | Rate | Error_125 | Rate | Error_150 |
|---|---|---|---|---|---|---|---|---|
| 80 | 176.7 | 63.6 | 1.81 | 37.7 | 4.57 | 13.6 | 2.70 | 8.3 |
| 90 | 194.7 | 81.0 | 1.35 | 54.8 | 2.66 | 30.3 | 7.96 | 7.1 |
| 100 | 215.5 | 101.4 | 1.05 | 74.9 | 1.81 | 50.0 | 5.75 | 17.5 |
The convergence rate is defined by 
where 
are the errors in the drag for two different number of mesh points, 
on the boundary.