In the GWB, medium and fluid properties that can vary in space are known as field variables. Transient field variables can additionally be set to vary with time.
You can set heterogeneous values for the following variables in X1t and X2t models:
You set a field variable in various ways:
X1t and X2t evaluate field variables at the onset of a run for each node in the domain.
Transient variables are a special class of field variables that can vary both in space and in time. Options include:
Setting up transient field variables is similar to the procedure for specifying heterogeneous field variables or defining custom rate laws. For each transient field variable you need to:
React, Phase2, X1t, and X2t evaluate transient field variables at each nodal block upon undertaking each time step over the course of a run.
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