PO.SCAL.VanGenuchten.Pc.SI
Description
Van Genuchten capillary pressure, [kPa]. Se = [1 + (αPc)^n]^(-m) (SI units).
Formula
=LAMBDA(Sw, Swi, alpha, n, LET(
alpha_1psi, PO.UnitConverter(alpha, "1/kPa", "1/psi"),
result_psi, PO.SCAL.VanGenuchten.Pc(Sw, Swi, alpha_1psi, n),
PO.UnitConverter(result_psi, "psi", "kPa")))Parameters
| Parameter | Unit | Description |
|---|---|---|
Sw |
- | Water saturation, [fraction] |
Swi |
- | Irreducible water saturation, [fraction] |
alpha |
1/kPa | Fitting parameter, [1/kPa]. Typical 0.001-1 |
n |
- | Pore size distribution parameter, [dimensionless]. Must be > 1 |
Examples
| Invocation | Expected |
|---|---|
=PO.SCAL.VanGenuchten.Pc.SI(0.5, 0.2, 0.000145, 2) |
17048.73 |