PO.SCAL.VanGenuchten.Sw.SI
Description
Van Genuchten saturation from capillary pressure, [fraction]. Inverse of Pc function (SI units).
Formula
=LAMBDA(Pc, Swi, alpha, n, LET(
Pc_psi, PO.UnitConverter(Pc, "kPa", "psi"),
alpha_1psi, PO.UnitConverter(alpha, "1/kPa", "1/psi"),
PO.SCAL.VanGenuchten.Sw(Pc_psi, Swi, alpha_1psi, n)))Parameters
| Parameter | Unit | Description |
|---|---|---|
Pc |
kPa | Capillary pressure, [kPa] |
Swi |
- | Irreducible water saturation, [fraction] |
alpha |
1/kPa | Fitting parameter, [1/kPa] |
n |
- | Pore size distribution parameter, [dimensionless] |
Examples
| Invocation | Expected |
|---|---|
=PO.SCAL.VanGenuchten.Sw.SI(2068, 0.2, 0.000145, 2) |
0.96629055 |