Model parameters from grid-sensitivity analysis for Watershed B with a 100-year return period
| Cell size (m*m) . | Number of cells . | Equation set . | Time step (s) . | Run time (hh:mm:ss) . | Maximum velocity (m/s) . | Courant number . |
|---|---|---|---|---|---|---|
| 0.2*0.2 | 732,953 | Full momentum | 0.1 | 58:25:23 | 13.5 | 6.75 |
| 0.5*0.5 | 117,038 | Full momentum | 0.1 | 05:23:14 | 6.7 | 1.34 |
| 1.0*1.0 | 29,810 | Full momentum | 0.1 | 01:25:28 | 6.5 | 0.65 |
| 1.5*1.5 | 13,574 | Full momentum | 0.1 | 00:49:53 | 6.5 | 0.43 |
| 2.0*2.0 | 7,657 | Full momentum | 0.1 | 00:29:09 | 6.4 | 0.32 |
| 0.2*0.2 | 732,953 | Diffusive wave | 0.1 | 25:06:34 | 10.5 | 5.25 |
| 0.5*0.5 | 117,038 | Diffusive wave | 0.1 | 03:02:58 | 10.1 | 2.02 |
| 1.0*1.0 | 29,810 | Diffusive wave | 0.1 | 00:40:36 | 7.48 | 0.75 |
| 1.5*1.5 | 13,574 | Diffusive wave | 0.1 | 00:20:20 | 7.81 | 0.52 |
| 2.0*2.0 | 7,657 | Diffusive wave | 0.1 | 00:06:55 | 7.87 | 0.39 |
| Cell size (m*m) . | Number of cells . | Equation set . | Time step (s) . | Run time (hh:mm:ss) . | Maximum velocity (m/s) . | Courant number . |
|---|---|---|---|---|---|---|
| 0.2*0.2 | 732,953 | Full momentum | 0.1 | 58:25:23 | 13.5 | 6.75 |
| 0.5*0.5 | 117,038 | Full momentum | 0.1 | 05:23:14 | 6.7 | 1.34 |
| 1.0*1.0 | 29,810 | Full momentum | 0.1 | 01:25:28 | 6.5 | 0.65 |
| 1.5*1.5 | 13,574 | Full momentum | 0.1 | 00:49:53 | 6.5 | 0.43 |
| 2.0*2.0 | 7,657 | Full momentum | 0.1 | 00:29:09 | 6.4 | 0.32 |
| 0.2*0.2 | 732,953 | Diffusive wave | 0.1 | 25:06:34 | 10.5 | 5.25 |
| 0.5*0.5 | 117,038 | Diffusive wave | 0.1 | 03:02:58 | 10.1 | 2.02 |
| 1.0*1.0 | 29,810 | Diffusive wave | 0.1 | 00:40:36 | 7.48 | 0.75 |
| 1.5*1.5 | 13,574 | Diffusive wave | 0.1 | 00:20:20 | 7.81 | 0.52 |
| 2.0*2.0 | 7,657 | Diffusive wave | 0.1 | 00:06:55 | 7.87 | 0.39 |