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Additional resources for 3D-Groundwater Modeling with PMWIN: A Simulation System for Modeling Groundwater Flow and Pollution
I OK I Contel I~ Fig. 38. The Run PEST dialog box .. Check the Parameter Estimation Results Several result files are created through the parameter estimation process. REC, where path is the folder in which your model data are saved. P AR. Note that PMWIN does not retrieve the optimized parameter values into the data matrices. Your original (PMWIN-) model data will not be modified in any way. This provides more security for the model data, because a parameter estimation process does not necessarily lead to a success.
For the current example, we accept the default value 0 for all celIs. Note that PMWIN automatically uses the same initial concentration values for both MOC3D and MT3D. Choose Leave Editor from the File menu or c1ick the leave editor button ~. ~ 1. 2. To define the transport subgrid and the concentration outside of the subgrid 1. Choose MOC3D > Subgrid. from the Models menu. The Subgrid for Transport (MOC3D) dialog box appears (Fig. 29). The options in the dialog box are grouped under two tabs - Subgrid and C' Outside ofSubgrid.
To see the projection of the path lines on the cross-section windows in greater details, open an Environment Options dialog box by choosing Environment... from the Options menu and set a larger exaggeration value for the vertical scale in the Cross Seetions tab. Fig. 18 shows the same path lines by setting the vertical exaggeration value to 10. Note that some path lines end up at the groundwater surface, where recharge occurs. This is one of the major differences between a three-dimensional and a two-dimensional model.