GMS:SEAM3D Project Workflow

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To build a SEAM3D model in GMS, use the following steps:

1. Start with a completed MODFLOW Project.
  1. Open a completed MODFLOW project created using either the grid approach or conceptual model approach.
2. Create a new MT3DMS simulation.
  1. Select the MT3DMS | New Simulation menu command.
3. Setup the SEAM3D simulation.
1. Assign the basic transport package as a SEAM3D model.
  1. Select the MT3DMS | Basic Transport Package menu command if the dialog does not appear when creating the simulation.
  2. In the Basic Transport Package dialog, select the SEAM3D option.
2. Set stress periods for SEAM3D.
  1. In the Basic Transport Package dialog, select the Stress Period button.
  2. Assign stress period parameters in the Stress Periods dialog.
3. Select SEAM3D packages.
  1. In the Basic Transport Package dialog, select the Model Setup button.
  2. Select packages in the MTD3DMS/RT3D Packages dialog. SEAM3D uses the biodegradation, cometabolism, reductive dechlorination, and NAPL dissolution packages.
4. Define species.
  1. Select species in the Define Species dialog.
    • This dialog should appear after selecting SEAM3D packages in the previous step.
5. Setup output control.
  1. In the Basic Transport Package dialog, select the Output Control button.
  2. Select output options in the Output Control dialog.
6. Enter the porosity.
  1. In the Basic Transport Package dialog, select the Porosity button.
  2. Assign values in the Porosity array editor.
7. Enter starting concentrations.
  1. In the Basic Transport Package dialog, enter starting concentration values for the defined species.
4. Set package definitions.
1. Define advection parameters.
  1. Select the SEAM3D | Advection Package menu command.
  2. Set advection parameters in the Advection Package dialog.
2. Define dispersion parameters.
  1. Select the SEAM3D | Dispersion Package menu command.
  2. Set dispersion parameters in the Dispersion Package dialog.
3. Enter data for source/sink mixing.
  1. Using the cell selection tools, select boundary grid cells.
  2. Select the SEAM3D | Point Source/Sinks menu command.
  3. Set source/sink mixing in the MODFLOW/SEAM3D Sources/Sinks dialog.
4. Enter chemical reaction parameters.
  1. Select the SEAM3D | Chemical Reaction Package menu command.
  2. Enter chemical reaction data in the Chemical Reaction Package dialog.
5. Set NAPL dissolution parameters.
1. Set parameters for NAPL area.
  1. Using the cell selection tools, select grid cells in the NAPL area.
  2. Select the SEAM3D | Point Source/Sinks menu command.
  3. Set source/sink mixing data for NAPL in the MODFLOW/SEAM3D Sources/Sinks dialog.
2. Enter NAPL data.
  1. Select the SEAM3D | NAPL Dissolution Package menu command.
  2. Enter NAPL data in the NAPL Dissolution Package dialog.
6. Enter biodegradation data.
  1. Select the SEAM3D | Biodegradation Package menu command.
  2. Enter biodegradation data in the Biodegradation Package dialog.
7. Enter reductive dechlorination data. (optional)
  1. Select the SEAM3D | Reductive Dechlorination Package menu command.
  2. Enter reductive dechlorination data in the Reductive Dechlorination Package dialog.
8. Enter cometabolism data. (optional)
  1. Select the SEAM3D | Cometabolism Package menu command.
  2. Enter cometabolism data in the Cometabolism Package dialog.
5. Run MODFLOW.
  1. Save Save Macro.svg the project.
  2. Run MODFLOW Run MODFLOW Macro.svg.
6. Run SEAM3D.
  1. Save Save Macro.svg the project.
  2. Run SEAM3D Run MT3DMS Macro.svg.
7. Visualize the solution.
1. Change display options.
1. Set display options.
  1. Open the Display Options Display Options Macro.svg dialog.
  2. Set the general display options.
  3. Set general lighting options.
  4. Set display options for each module that is being used.
  5. Set contour options.
  6. Set vector options.
2. View display.
  1. Use the Rotate Rotate Tool.svg, Pan Pan Tool.svg, and Zoom Zoom Tool Icon.svg tools.
  2. Use the View menu commands found in the Display menu.
  3. Use the Frame Frame Macro.svg command to center and resize the display as needed.
3. Adjust display.
Display may need to be adjusted during the remainder of the project.
  1. Use the Display Options dialog and viewing tools as needed.
  2. Use the Frame Frame Macro.svg command to center and resize the display as needed.
2. Change contour options.
  1. Turn on Contours in the Display Options dialog and set contour options. The "Color Fill" option is recommended for this.
  2. Look for inconsistent points (points with values much higher/lower than their neighbors or regions where no data points exist).
  3. Verify that the region being modeled is covered by the elevation/depth data and there are no holes.
3. Create a plot.
1. Start the plot wizard.
  1. Select the Display | Plot Wizard menu command.
2. Select available plot type.
1. Computed vs. Observed Data plots.
1. Computed vs. Observed Data.
  1. Select Display | Plot Wizard to start the Plot Wizard.
  2. Select the "Computed vs. Observed Data" option on the left and click Next.
  3. Specify plot options in step 2 of the Plot Wizard then click Finish.
  4. Review plot window.
2. Computed vs. Observed Data (Weighted).
  1. Select Display | Plot Wizard to start the Plot Wizard.
  2. Select the "Computed vs. Observed Data (Weighted)" option on the left and click Next.
  3. Specify plot options in step 2 of the Plot Wizard then click Finish.
  4. Review plot window.
2. Residual vs. Observed Data plots.
1. Residual vs. Observed Data.
  1. Select Display | Plot Wizard to start the Plot Wizard.
  2. Select the "Residual vs. Observed" option on the left and click Next.
  3. Specify plot options in step 2 of the Plot Wizard then click Finish.
  4. Review plot window.
2. Residual vs. Observed Data (Weighted).
  1. Select Display | Plot Wizard to start the Plot Wizard.
  2. Select the "Residual vs. Observed (Weighted)" option on the left and click Next.
  3. Specify plot options in step 2 of the Plot Wizard then click Finish.
  4. Review plot window.
3. Parameter Sensitivity plot.
  1. Select Display | Plot Wizard to start the Plot Wizard.
  2. Select the "Parameter Sensitivity" option on the left and click Next.
  3. Specify plot options in step 2 of the Plot Wizard then click Finish.
  4. Review plot window.
4. Error vs. Simulation plot.
  1. Select Display | Plot Wizard to start the Plot Wizard.
  2. Select the "Error vs. Simulation" option on the left and click Next.
  3. Specify plot options in step 2 of the Plot Wizard then click Finish.
  4. Review plot window.
5. Error vs. Time Step plot.
  1. Select Display | Plot Wizard to start the Plot Wizard.
  2. Select the "Error vs. Time Step" option on the left and click Next.
  3. Specify plot options in step 2 of the Plot Wizard then click Finish.
  4. Review plot window.
6. Error Summary plot.
  1. Select Display | Plot Wizard to start the Plot Wizard.
  2. Select the "Error Summary" option on the left and click Next.
  3. Specify plot options in step 2 of the Plot Wizard then click Finish.
  4. Review plot window.
7. Time Series plot.
  1. Select Display | Plot Wizard to start the Plot Wizard.
  2. Select the "Time Series" option on the left and click Next.
  3. Specify plot options in step 2 of the Plot Wizard then click Finish.
  4. Review plot window.
8. Active Dataset Time Series plot.
  1. Select a dataset in Project Explorer.
  2. Select cells in the project.
  3. Select Display | Plot Wizard to start the Plot Wizard.
  4. Select the "Active Dataset Time Series" option on the left and click Next.
  5. Specify plot options in step 2 of the Plot Wizard then click Finish.
  6. Review plot window.
9. S/S Flow vs. Time plot.
  1. Select Display | Plot Wizard to start the Plot Wizard.
  2. Select the "S/S Flow vs. Time" option on the left and click Next.
  3. Specify plot options in step 2 of the Plot Wizard then click Finish.
  4. Review plot window.
10. Flow Budget vs. Time plot.
  1. Select Display | Plot Wizard to start the Plot Wizard.
  2. Select the "Flow Budget vs. Time" option on the left and click Next.
  3. Specify plot options in step 2 of the Plot Wizard then click Finish.
  4. Review plot window.
11. Gage Package Value vs. Time plot.
  1. Select Display | Plot Wizard to start the Plot Wizard.
  2. Select the "Gage Package Value vs. Time" option on the left and click Next.
  3. Specify plot options in step 2 of the Plot Wizard then click Finish.
  4. Review plot window.
4. Create an animation.
  1. Select a solution dataset and use the Display | Animate menu command.
  2. Use the Animation Wizard to specify the animation parameters.
  3. Save and view the animation file.
5. Review the zone and flow budgets.
  1. Select MODFLOW | Flow Budget....
  2. Review the flow data on the Cells and Zones tabs in the Flow Budget dialog.
  3. Generate water budget data on the USGS ZONEBUDGET tab.


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