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January 27, 2020 by

Soil Hydraulic Functions in Matlab

Water Retention Functions

The van Genuchten (1980) model is the most widely used water retention curve function:

$\Theta = \left( 1 +(\alpha \psi)^n\right)^{-m}$

where the effective saturation is defined as:

$\Theta = \frac{(\theta - \theta_{r})}{ (\theta_{s} - \theta_{r})}$

The hydraulic conductivity function is defined using Mualem Model.

The hydraulic capacity function.

The following function takes a scalr or vector of u as input: test