sncFun.04110 {spsh}

Unimodal Brooks-Corey Non-Capillary Saturation Model

Description

Analytical implementation of the non-capillary saturation function from the Brooks-Corey function (Brooks and Corey 1964).

Usage

sncFun.04110(p_snc, h)

Arguments

p_snc

vector of the 2 Brooks-Corey model parameters, order is sensitve and has to be given as:

alf	air entry pressure head [cm^-1]
bet	effective model parameter [ - ]
h0	pressure head representing oven dryness given in pF, i.e. log[10](|pressure head| [cm])

h

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

Details

The function is Eq. Table 1-A in insertRefStreck.2020spsh The analytical solution presented in sncFun.04110 only requires the Brooks-Corey model specific parameters and h0.

Value

returns a list with calculations at specified h:

snc

non-capillary saturation

References

Brooks RH, Corey AT (1964). Hydraulic Properties of Porous Media. Hydrology Papers No 3, Colorado State University, Fort Collings, Colorado. Streck T, Weber TKD (2020). “Analytical expressions for noncapillary soil water retention based on popular capillary retention models, accepted.” Vadose Zone Journal. ISSN 15391663 (ISSN).

Examples

p     <- c(0.1, 0.4, .02, 2, 100, .5)
p_snc <- c(p[3:4], 6.8)
h     <- 10^seq(-2, 6.8, length = 197)
Se    <- shypFun.04110(p, h)$Se
snc   <- sncFun.04110(p_snc, h)