## Tutorial 1 Flow Options

In the flow panel, an
equilibrium profile is selected for initial pressure heads. With this
option, the user specifies the depth to a water table; pressure heads
are set equal to the negative of the elevation head
so that a no-flow or static equilibrium initial condition exists. The
user may replace the upper part of the equilibrium profile by a constant
minimum pressure head. These values can be viewed and modified in the tutorial 1 initial hydraulic condition
step.

Intercell relative hydraulic conductivity is set to "Arithmetic mean". In
general, use of arithmetic and geometric mean produce little difference
in simulation results. Upstream weighting is less accurate than the other
options, but may by needed when simulating movement of a sharp wetting
front.

There are four options for representing hydraulic characteristic functions:

van Genuchten Model
Brooks-Corey Model
Haverkamp Model
Tabular Data
The van Genuchten model was selected for this simulation. This is the
only model for which a generic catalog of parameter values is available
in VS2DH*I*. Parameters for this model can be entered and
displayed in the tutorial 1 textural class window.

Next step: Transport Options

Previous step: Model Options

Return to: