GMS 10.3 Tutorial SEAWAT Hele-Shaw Experiment Simulate the Hele-Shaw Salt Lake experiment using SEAWAT in GMS
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1 v GMS 10.3 Tutorial SEAWAT Hele-Shaw Experiment Simulate the Hele-Shaw Salt Lake experiment using SEAWAT in GMS Objectives Construct and run a SEAWAT model in GMS using the grid approach. The model will mimic the Hele- Shaw salt lake experiment. Prerequisite Tutorials MT2DMS Grid Approach Required Components Grid Module MODFLOW MT3DMS SEAWAT Time minutes Page 1 of 8 Aquaveo 2017
2 1 Introduction Getting Started Importing the existing model The SEAWAT Model Viewing the SEAWAT Inputs Saving and running the model Viewing the Solution Creating an Animation Conclusion Introduction The SEAWAT model is described as:...a generic MODFLOW/MT3DMS-based computer program designed to simulate three-dimensional variable-density groundwater flow coupled with multi-species solute and heat transport. The program has been used for a wide variety of groundwater studies including those focused on brine migration in continental aquifers as well as those focused on saltwater intrusion in coastal aquifers. SEAWAT uses the familiar structure of MODFLOW and MT3DMS. 1 This tutorial explains how to perform a SEAWAT simulation within GMS by importing an existing SEAWAT simulation, running the simulation, and viewing the results. The first problem being solved in this tutorial is the salt lake problem used in the SEAWAT manual. 2 The design for the Hele-Shaw experiment is shown in [Figure 1]. Uniform evaporation of pure water occurs along line segment AB, leaving behind a saltsaturated fluid with a concentration of 110 grams per liter. Fluid with a potassium sulfate concentration of 84 grams per liter is injected at a constant head along segment CD. The remaining boundaries are impermeable. To prevent the fingers from forming too rapidly, the clear plates were tilted at an angle () of 5 degrees from the horizontal. This tilt is represented in SEAWAT-2000 by calculating input variables (hydraulic conductivity and specific storage) with the component of gravity (g) that is parallel with the plate (g sin ). [Figure 2] contains a list of the input variables for the salt lake problem. 3 1 SEAWAT: A Computer Program for Simulation of Three-Dimensional Variable-Density Ground- Water Flow and Transport. U.S. Geological Survey. October 7, Accessed July 6, (Archived by WebCite at 2 Langevin, Christian D.; Shoemaker, W. Barclay; and Guo, Weixing (2003). MODFLOW-2000, the U.S. Geological Survey Modular Ground-Water Model Documentation of the SEAWAT-2000 Version with the Variable-Density Flow Process (VDF) and the Integrated MT3DMS Transport Process (IMT): U.S. Geological Survey Open-File Report , 43 p. 3 Ibid, p. 24. Page 2 of 8 Aquaveo 2017
3 Figure 1 Flow model from SEAWAT manual 4 Figure 2 Input parameters and values for Salt Lake Hele-Shaw experiment and SEAWAT 2000 simulation 5 4 Langevin, et al (2003), p. 25. Page 3 of 8 Aquaveo 2017
4 The SEAWAT-2000 model was run for 24,000 seconds (400 minutes) using 60 second transport time steps. The variable-density flow equation was solved using the PCG solver, and the implicit finite-difference method was used with the GCG Package to solve the transport equation. 6 2 Getting Started Do the following to get started: 1. If necessary, launch GMS. 2. If GMS is already running, select File New to ensure that the program settings are restored to their default state. 2.1 Importing the existing model Start with a SEAWAT model that has already been created. 1. Click Open to bring up the Open dialog. 2. Select MODFLOW Name Files (*.mfn;*.nam) from the Files of type dropdown. 3. Browse to the \Tutorials\SEAWAT\saltlake folder and select seawat.nam. 4. Click Open to exit the Open dialog and open the SEAWAT Translator dialog. 5. Click OK to begin importing the model. The SEAWAT Translator should run and end with a message saying that SEAWAT terminated successfully. 6. Click Done to finish importing the file and close the SEAWAT Translator dialog. A grid should appear in the Main Graphics Window. 7. Switch to Front View. 8. Frame the project. The view of the grid should appear with symbols representing specified head boundary conditions (Figure 3). SEAWAT uses a combination of MODFLOW and MT3DMS inputs; the MODFLOW and MT3DMS portions of the SEAWAT inputs are edited in GMS through the MODFLOW and MT3DMS interfaces, respectively. The SEAWAT interface includes the inputs that are specific to SEAWAT. 5 Ibid, p Langevin, et al (2003), p. 28. Page 4 of 8 Aquaveo 2017
5 Figure 3 Front view of imported SEAWAT model 3 The SEAWAT Model 3.1 Viewing the SEAWAT Inputs Now to examine the inputs to the SEAWAT model. 1. Select SEAWAT Global Options to open the Global Options dialog. Notice that this SEAWAT simulation includes transport and that Variable Density Flow (VDF) is turned on. 2. Click OK to exit the Global Options dialog. 3. Select SEAWAT VDF Package to open the SEAWAT VDF Package dialog. The VDF package controls how density is calculated by SEAWAT. In the Fluid Density Calculation section, notice that Fluid density calc (MT3DRHOFLG) is set to 1. This indicates that the concentration of "species_1" is used in the density calculations. Reference fluid density (DENSREF) is set to the value of the incoming fluid density shown in Figure 2. Density/conc. slope (DRHODC) is set to the value of density change per concentration change shown in Figure 2. Also notice that Flow/transport coupling (NSWTCPL) is set to 1. This indicates that the flow and transport are explicitly coupled. Refer to the SEAWAT documentation for more information on how these inputs affect the SEAWAT model Click OK to exit the SEAWAT VDF Package dialog. 7 Langevin, Christian. D.; Thorne, Daniel T., Jr.; Dausman, Alyssa M.; Sukop, Michael C.; and Guo, Weixing. (2007). SEAWAT Version 4: A Computer Program for Simulation of Multi- Species Solute and Heat Transport in U.S. Geological Survey Techniques and Methods Book 6, Chapter A22, p Page 5 of 8 Aquaveo 2017
6 3.2 Saving and running the model Now to save the model with a new name and run the model. 1. Select File Save As to bring up the Save As dialog. 2. Select Project Files (*.gpr) from the Save as type drop-down. 3. Enter Saltlake.gpr as the File name. 4. Click Save to save the project under the new name and close the Save As dialog. 5. Select SEAWAT Run SEAWAT to bring up the SEAWAT model wrapper dialog. 6. When the simulation is finished, turn on Read solution on exit and Turn on contours (if not on already). 7. Click Close to import the solution and close the SEAWAT dialog. 4 Viewing the Solution Now to view the results of the SEAWAT model run. 1. Select species_1 under SaltLake (MT3DMS) in the Project Explorer. 2. Select time step 8 (it has a value of ). The solution should appear similar to Figure 4. Figure 4 SEAWAT solution The model results look very similar to the result from the real experiment (Figure 5). Page 6 of 8 Aquaveo 2017
7 Figure 5 Result from Hele-Shaw experiment of the Salt Lake problem at time step 23215s 8 If desired, step through the time steps of the solution. 4.1 Creating an Animation Now to create an animation of the concentration over time. 1. Select Display Animate... to bring up Options page of the Animation Wizard dialog. The defaults should work fine for creating an animation. 2. Click Next to go to the Dataset page of the Animation Wizard dialog. 3. Click Finish to close the Animation Wizard dialog and create the animation. When the animation is finished rendering, it will open in the external Play AVI Application window and begin playing. 4. When done reviewing the animation, close the Play AVI Application window and return to GMS. Feel free to change the contour options or rerun SEAWAT with different options and animate the results. 8 Langevin, et al (2003), p. 26. Page 7 of 8 Aquaveo 2017
8 5 Conclusion This concludes the tutorial. The following key concepts were discussed and demonstrated in this tutorial: SEAWAT, combining both MODFLOW and MT3D, can be used to solve variable density groundwater flow and solute transport equations. Import existing SEAWAT models into GMS easily. GMS has multiple options for viewing the results of a SEAWAT model run. Page 8 of 8 Aquaveo 2017
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MODFLOW Stochastic Modeling, PEST Null Space Monte Carlo I. Use PEST to create multiple calibrated MODFLOW simulations
v. 10.1 GMS 10.1 Tutorial MODFLOW Stochastic Modeling, PEST Null Space Monte Carlo I Use PEST to create multiple calibrated MODFLOW simulations Objectives The PEST Null Space Monte Carlo modeling option
Stratigraphy Modeling Horizons and Solids
v. 10.3 GMS 10.3 Tutorial Stratigraphy Modeling Horizons and Solids Create solids from boreholes using the Horizons Solids tool. Objectives Learn how to construct a set of solid models using the horizon
v Google Earth Files SMS 13.0 Tutorial Prerequisites None Requirements Mesh Module Google Earth Time minutes
v. 13.0 SMS 13.0 Tutorial Objectives Learn how to save SMS data to a KMZ file format. KMZ files are Google Earth files and will allow viewing SMS data in Google Earth. SMS can save any georeferenced data
MGO Tutorial - Dewatering Scenario
MGO Tutorial - Dewatering Scenario Introduction 1.0.1 Background Pumping well optimization technology is used to determine the ideal pumping well locations, and ideal pumping rates at these locations,
Objectives Learn how to work with projections in GMS, and how to combine data from different coordinate systems into the same GMS project.
v. 10.2 GMS 10.2 Tutorial Working with map projections in GMS Objectives Learn how to work with projections in GMS, and how to combine data from different coordinate systems into the same GMS project.
GMS 10.0 Tutorial MODFLOW Conceptual Model Approach II Build a multi-layer MODFLOW model using advanced conceptual model techniques
v. 10.0 GMS 10.0 Tutorial Build a multi-layer MODFLOW model using advanced conceptual model techniques 00 Objectives The conceptual model approach involves using the GIS tools in the Map Module to develop
v GMS 10.0 Tutorial MODFLOW Grid Approach Build a MODFLOW model on a 3D grid Prerequisite Tutorials None Time minutes
v. 10.0 GMS 10.0 Tutorial Build a MODFLOW model on a 3D grid Objectives The grid approach to MODFLOW pre-processing is described in this tutorial. In most cases, the conceptual model approach is more powerful
GMS 8.0 Tutorial MODFLOW Interpolating Layer Data Interpolating MODFLOW elevations and other data from discrete points
v. 8.0 GMS 8.0 Tutorial Interpolating MODFLOW elevations and other data from discrete points Objectives Learn how to effectively use GMS tools to interpolate MODFLOW layer elevation data and other MODFLOW
GMS 9.0 Tutorial MODFLOW Conceptual Model Approach II Build a multi-layer MODFLOW model using advanced conceptual model techniques
v. 9.0 GMS 9.0 Tutorial Build a multi-layer MODFLOW model using advanced conceptual model techniques 00 Objectives The conceptual model approach involves using the GIS tools in the Map module to develop
Objectives Learn how GMS uses rasters to support all kinds of digital elevation models and how rasters can be used for interpolation in GMS.
v. 9.1 GMS 9.1 Tutorial Using rasters for interpolation and visualization in GMS Objectives Learn how GMS uses rasters to support all kinds of digital elevation models and how rasters can be used for interpolation
v Getting Started An introduction to GMS GMS Tutorials Time minutes Prerequisite Tutorials None
v. 10.3 GMS 10.3 Tutorial An introduction to GMS Objectives This tutorial introduces GMS and covers the basic elements of the user interface. It is the first tutorial that new users should complete. Prerequisite
Objectives Learn how to work with projections in GMS, and how to combine data from different coordinate systems into the same GMS project.
v. 10.4 GMS 10.4 Tutorial Working with map projections in GMS Objectives Learn how to work with projections in GMS, and how to combine data from different coordinate systems into the same GMS project.
Using rasters for interpolation and visualization in GMS
v. 10.3 GMS 10.3 Tutorial Using rasters for interpolation and visualization in GMS Objectives This tutorial teaches how GMS uses rasters to support all kinds of digital elevation models and how rasters
Geostatistics 3D GMS 7.0 TUTORIALS. 1 Introduction. 1.1 Contents
GMS 7.0 TUTORIALS Geostatistics 3D 1 Introduction Three-dimensional geostatistics (interpolation) can be performed in GMS using the 3D Scatter Point module. The module is used to interpolate from sets
Objectives This tutorial demonstrates how to use feature objects points, arcs and polygons to make grid independent conceptual models.
v. 9.0 GMS 9.0 Tutorial Use points, arcs and polygons to make grid independent conceptual models Objectives This tutorial demonstrates how to use feature objects points, arcs and polygons to make grid
GMS 9.1 Tutorial MODFLOW Conceptual Model Approach II Build a multi-layer MODFLOW model using advanced conceptual model techniques
v. 9.1 GMS 9.1 Tutorial Build a multi-layer MODFLOW model using advanced conceptual model techniques 00 Objectives The conceptual model approach involves using the GIS tools in the Map module to develop
v Basic FESWMS Analysis SMS Tutorials Prerequisites Requirements Time Objectives
v. 12.2 SMS 12.2 Tutorial Objectives This tutorial instructs on how to prepare a mesh for a FESWMS simulation. Prerequisites Overview Tutorial Requirements FESWMS Fst2dh Mesh Module Time 15 30 minutes
Tutorial - Importing VMOD Classic Projects. Visual MODFLOW Flex. Integrated Conceptual & Numerical Groundwater Modeling
Tutorial - Importing VMOD Classic Projects Visual MODFLOW Flex Integrated Conceptual & Numerical Groundwater Modeling Importing Visual MODFLOW Classic Models Tutorial The following example is a quick walk
v GMS 10.0 Tutorial MODFLOW SUB Package The MODFLOW SUB Package Interface in GMS Prerequisite Tutorials MODFLOW Conceptual Model Approach I
v. 10.0 GMS 10.0 Tutorial The MODFLOW SUB Package Interface in GMS Objectives Learn how to use the MODFLOW SUB package interface in GMS. Prerequisite Tutorials MODFLOW Conceptual Model Approach I Required
Importing VMOD Classic Projects. Visual MODFLOW Flex. Integrated Conceptual & Numerical Groundwater Modeling
Importing VMOD Classic Projects Visual MODFLOW Flex Integrated Conceptual & Numerical Groundwater Modeling Importing Visual MODFLOW Classic Models Tutorial The following example is a quick walk through
v UGrid Clipping GMS 10.3 Tutorial Using Clipping display option to visualize UGrid data Prerequisite Tutorials Getting Started
v. 10.3 GMS 10.3 Tutorial Using Clipping display option to visualize UGrid data Objectives This tutorial describes the UGrid clipping tool. The UGrid clipping tool can be used to cut away a portion of
GMS 8.0 Tutorial MODFLOW Managing Transient Data Creating transient MODFLOW models with time-varying inputs
v. 8.0 GMS 8.0 Tutorial Creating transient MODFLOW models with time-varying inputs Objectives GMS provides a powerful suite of tools for inputting and managing transient data. These tools allow all data
v CMS-Wave Analysis SMS 12.2 Tutorial Prerequisites Requirements Time Objectives
v. 12.2 SMS 12.2 Tutorial Objectives This workshop gives a brief introduction to the CMS-Wave interface and model. This model is similar to STWAVE and the tutorial for the models is similar. As with the
GMS 8.3 Tutorial Stratigraphy Modeling Horizons and Solids Create solids from boreholes using the Horizons Solids tool.
v. 8.3 GMS 8.3 Tutorial Create solids from boreholes using the Horizons Solids tool. Objectives Learn how to construct a set of solid models using the horizon method in GMS. Become familiar with how horizons