rich¶
Invokes Richard’s equation solution for unsaturated-saturated flow. A single phase approach that neglects air phase flow and assumes the movement of water is independent of air flow and pressure.
Uses variable switching (Pressure, Saturation).
- Group 1 - STRD_RICH, TOL_PHASE, PCHNG, SCHNG
| Input Variable | Format | Description |
|---|---|---|
| STRD_RICH | real | Newton-raphson relaxation factor |
| TOL_PHASE | real | Tolerance for full saturation |
| PCHNG | real | Pressure adjustment after variable switch |
| SCHNG | real | Saturation adjustment after variable switch |
The following is an example of rich.
| rich | |||
| 0.95 | 1.e-5 | 1.e-3 | 1.e-3 |
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