[Dashes (–) indicate that values are not applicable]
Input variable name |
Default values |
Range |
||
Iteration Control |
||||
1×10-4 (L)* |
– |
|||
500 (L3/T)* |
– |
|||
100 |
10–2,000 |
|||
Dry Cell Tolerance |
||||
0.00001 |
1×10-6-1 |
|||
NWT Options |
||||
1 |
1 or 2 |
|||
0 |
0 or 2 |
|||
0** |
0 or 1 |
|||
Under relaxation Input |
||||
|
Model Complexity |
|
||
|
Simple |
Moderate |
Complex |
|
0.97 |
0.90 |
0.85 |
0–1 |
|
0.0001 |
0.00001 |
0.00001 |
0–1 |
|
0.0 |
0.0 |
0.0 |
0–1 |
|
0.0 |
0.1 |
0.1 |
0–1 |
|
Residual Control |
||||
|
Model Complexity |
|
||
|
Simple |
Moderate |
Complex |
|
0*** |
0 |
1 |
0 or 1 |
|
20 |
20 |
50 |
1–100 |
|
1.5 |
1.1 |
1.1 |
1–2 |
|
0.97 |
0.9 |
0.7 |
0.05–0.99 |
|
Linear Solution Control and Options for GMRES |
||||
|
Model Complexity |
|
||
|
Simple |
Moderate |
Complex |
|
50 |
50 |
50 |
25–1,000 |
|
2 |
2 |
2 |
1 or 2 |
|
1 |
1 |
1 |
5–10 for ILUMETHOD=1 0–2 for ILUMETHOD=2 |
|
1×10-10 |
1×10-10 |
1×10-10 |
1×10-8-1×10-12 |
|
5 |
10 |
15 |
5–20 |
|
Linear Solution Control and Options for χMD |
||||
|
Model Complexity |
|
||
|
Simple |
Moderate |
Complex |
|
1 |
1 |
2 |
0,1, or 2 |
|
0 |
0 |
0 |
0,1, or 2 |
|
1 |
1 |
15 |
1–10 |
|
5 |
10 |
1 |
4-10 for Orthomin 2 otherwise |
|
1 |
1 |
1 |
0 or 1 |
|
0.0 |
0.0 |
0.0 |
0–0.0001 |
|
1 |
1 |
1 |
0 or 1 |
|
5×10-3 |
5×10-3 |
1×10-3 |
5×10-5-1×10-3 |
|
1×10-3 |
1×10-3 |
1×10-4 |
1×10-3-1×10-5 |
|
50 |
100 |
200 |
25–1,000 |
|
*These values are dependent on the units specified in the MODFLOW-2005 discretization input file. Values given are for units of meters and days.
**The optimal value for IBOTAV is problem specific. Values of 0 and 1 should be tested for each problem.
***BACKFLAG should be set to 0 (residual control set to inactive) unless there are convergence problems. “OPTIONS” must be set to “SPECIFIED” if the residual control option is used.
