Sat

0th

Percentile

Capillary saturation function

Capillary saturation function of van Genuchten (unimodal or bimodal pore space distributions) and Brooks and Corey (unimodal pore space distribution).

Usage
Sat(suc, par.shp, modality = c("uni"), FUN.shp = "vg",
  suc.negativ = TRUE)
Arguments
suc

Suction/pressure heads. Negative if suc.negativ = TRUE

par.shp

named parameter in list or vector

modality

pore size distribution ('uni' or 'bi')

FUN.shp

Funktion for soil hydraulic properties (vG or bc) (see details)

suc.negativ

set TRUE if suction/pressure heads are negative and FALSE if positive

Details

additional for bimodal (modality == 'bi'): w2 [-]: weigthing between pore space distribution alfa2 [1/L]: van Genuchten parameter alfa for second pore space distribution n2 [-]: van Genuchten parameter n for second pore space distribution

References

Van Genuchten, M. T. (1980). A closed-form equation for predicting the hydraulic conductivity of unsaturated soils. Soil science society of America journal, 44(5), 892-898.

Durner, W. (1994). Hydraulic conductivity estimation for soils with heterogeneous pore structure. Water Resources Research, 30(2), 211-223.

Brooks, R.H., and A.T. Corey (1964): Hydraulic properties of porous media. Hydrol. Paper 3. Colorado State Univ., Fort Collins, CO, USA.

Aliases
  • Sat
Documentation reproduced from package SoilHyP, version 0.1.3, License: GPL (>= 2)

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