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The Variable Entry tab is used to describe the variable for the Sensitivity Analysis. The following data can be edited on this tab:
Variable Type: This is the type of data for which the user wishes to conduct the sensitivity analysis. There are 6 types of data that can be used:
Initial Source Concentration: This is the Initial Source Concentration of the top boundary, and can only be used if the top boundary condition is NOT zero flux.
Darcy Velocity: This is the Darcy Velocity of the model.
Layer Thickness: This allows the user to specify a distribution for the thickness of a layer. The user will be asked to specify the layer for which to vary the thickness.
Diffusion Coefficient: This is the Diffusion Coefficient of a layer, the user will be asked to specify the layer for which to vary the Diffusion Coefficient.
Distribution Coefficient: This is the Distribution Coefficient of a layer, the user will be asked to specify the layer for which to vary the Distribution Coefficient. If the layer selected is fractured the distribution coefficient along the fracture will be varied.
Variable Properties End Time: This is the End Time of a Variable Properties Time Group, the user will be asked to specify the Time Group for which to vary End Time. When varying the end time of a time group the program will shift the end times of subsequent time groups to maintain their relative position, and will try to keep the end times of any previous time groups the same. This variable type will not show up if the Variable Properties feature has not been previously selected.
Minimum Value: This is the minimum value for the variable. During the simulations the value of the variable will be interpolated linearly from the minimum to the maximum value.
Maximum Value: This is the maximum value of the variable. During the simulations the value of the variable will be interpolated linearly from the minimum to the maximum value.