shypFun.01110: van Genuchten-Mualem Soil Hydraulic Proptery Model

Description Usage Arguments Details Value Author(s) References Examples

View source: R/shypFun.01110.R

Description

van Genuchten-Mualem functions for the retention and hydraulic conductivity curves \insertCitevanGenuchten.1980spsh.

Usage

1

Arguments

p

vector of the 6 van Genuchten-Mualem model parameters, the order is sensitve and has to be given as:

thrresidual water water content [cm cm-3]
thssaturated water water content [cm cm-3]
alf1van Genuchten alpha [cm-3]
n1van Genuchten n [-]
Kssaturated conductivity [cm d-1]
tauexponent of Se in the capillary conductivity model, sometimes denoted in the literature as l [-]
h

pressure heads [cm] for which the corresponding retention and conductivity values are calculated.

Details

The function solves analytically the spec. water capacity function and integral to the capillary bundle model. It can be extended by the Brunswick model to account for non-capillary storage and conductivity \insertCiteWeber.2019spsh.

Value

returns a list with calculations at specified h:

theta

calculated volumetric moisture content

Se

calculated saturation

cap

specific water capacity function

psd

pore size distribution

Kh

Hydraulic conductivity values

Author(s)

Tobias KD Weber , tobias.weber@uni-hohenheim.de

References

\insertRef

vanGenuchten.1980spsh \insertRefWeber.2019spsh

Examples

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p      <- c(0.1, 0.4, 0.01, 2, 100, .5)
h      <- 10^seq(-2, 6.8, length = 197)
shyp.L <- shypFun.01110(p, h)

spsh documentation built on April 14, 2020, 6:37 p.m.