v GMS 10.4 Tutorial FEMWATER Transport Model Build a FEMWATER model to simulate salinity intrusion
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1 v GMS 10.4 Tutorial FEMWATER Transport Model Build a FEMWATER model to simulate salinity intrusion Objectives This tutorial demonstrates building a FEMWATER transport model using the conceptual model approach. It will review running the model and examining the results. Prerequisite Tutorials Required Components FEMWATER Geostatistics Map Module Mesh Module Sub-surface characterization Time minutes Page 1 of 8 Aquaveo 2018
2 1 Introduction Getting Started Opening the Flow Model Building the Transport Model Turning on the Transport Option Defining the Boundary Conditions Converting the Conceptual Model Selecting the Analysis Options Run Options Time Control Initial Conditions Output Control Saving and Running the Model Animating the Fresh-water Surface Conclusion Introduction FEMWATER is a three-dimensional finite element groundwater model. It can be used to simulate flow and transport in both the saturated and unsaturated zones. Furthermore, the flow and transport can be coupled to simulate density dependent problems such as salinity intrusion. The site to be modeled in this tutorial is a small coastal aquifer with three production wells, each pumping at a rate of 2,830 m 3 /day (Figure 1). The no-flow boundary on the upper left corresponds to a parallel flow boundary and the no-flow boundary on the left corresponds to a thinning of the aquifer due to a high bedrock elevation. A stream provides a specified head boundary on the lower left and the remaining boundary is a coastal boundary simulated with a specified head condition. The coastline arc is assigned with a specified concentration boundary of 19 mg/liter of salt. The stratigraphy of the site consists of an upper and lower aquifer. The upper aquifer has a hydraulic conductivity of 3 m/day, and the lower aquifer has a hydraulic conductivity of 9 m/day. The wells extend to the lower aquifer. The recharge to the aquifer is about one foot per year. The objective of this tutorial is to create a transport model of the site to simulate salinity intrusion from the coast line. This tutorial describes how to build a FEMWATER model to simulate salinity intrusion. It will discuss and demonstrate importing an existing FEMWATER flow model, mapping the conceptual model to a FEMWATER simulation, defining additional conditions and running FEMWATER, viewing the water table as an isosurface, and draping the TIFF image on the ground surface. Page 2 of 8 Aquaveo 2018
3 No Flow Boundary Specified Concentration Boundary Production Wells Specified Head Boundary Figure 1 Site to be modeled with FEMWATER 1.1 Getting Started Do the following to get started: 1. If GMS is not running, launch GMS. 2. If GMS is already running, select File New to ensure the program settings are restored to the default state. 2 Opening the Flow Model Before setting up the FEMWATER transport simulation, there must first be a FEMWATER solution that will be used as the flow field for the transport simulation. In the interest of time, import a previously created FEMWATER simulation. 1. Click Open to bring up the Open dialog. 2. Select Project Files (*.gpr) from the Files of type drop-down. 3. Browse to the femwater-transport\femwater-transport directory and select femmod.gpr. 4. Click Open to import the project file and close the Open dialog. 5. Frame the project. The Main Graphics Window should appear similar to Figure 2. Page 3 of 8 Aquaveo 2018
4 Figure 2 Initial view of the imported project 3 Building the Transport Model The purpose of this model is to simulate salinity intrusion by assigning a salt concentration to the coastline arc. The concentration can be assigned directly to the arc in the conceptual model. 3.1 Turning on the Transport Option 1. In the Project Explorer, right-click on Map Data and select Expand All. 2. Right-click on femmod and select Properties to open the Conceptual Model Properties dialog. 3. In the table, turn on Transport. 4. Click OK to exit the Conceptual Model Properties dialog. 5. Right-click on femwater and select Coverage Setup to open the Coverage Setup dialog. 6. In the Sources/Sinks/BCs list, turn on Transport BC. 7. Click OK to close the Coverage Setup dialog. 3.2 Defining the Boundary Conditions Assign boundary conditions to the coastline arc. 1. Select femwater to make it active. Page 4 of 8 Aquaveo 2018
5 2. Using the Select Arcs tool, double-click on the coastline arc to bring up the Attribute Table dialog. 3. In row 4 in the table, select spec. conc. from the drop-down in the Transport bc column. 4. Enter 19.0 in the Conc. (mg/l) column (scroll to the right, if needed). 5. Click OK to close the Attribute Table dialog. 4 Converting the Conceptual Model Now it is possible to convert the conceptual model to the 3D mesh model. This will assign all of the boundary conditions using the data defined on the feature objects. 1. In the Project Explorer, right-click on femmod and select Map To FEMWATER to bring up the Map Model dialog. 2. Click OK to accept the defaults and close the Map Model dialog. A set of symbols should appear indicating that the boundary conditions have been assigned (Figure 3). Figure 3 Coastline arc shows the boundary conditions 5 Selecting the Analysis Options Next, select the analysis options. Page 5 of 8 Aquaveo 2018
6 5.1 Run Options First, indicate a steady-state flow simulation: 1. Select FEMWATER Run Options to open the FEMWATER Run Options dialog. 2. Select Transport only (1) for the Type of simulation (OP1). 3. Select Nodal/Nodal (11) for Quadrature (IQUAR). 4. Click OK to close the FEMWATER Run Options dialog. 5.2 Time Control Second, set the FEMWATER time control options. 1. Select FEMWATER Time Control to open the FEMWATER Time Control dialog. 2. Enter as the Maximum simulation time. 3. Enter 30.0 as the Constant time step. 4. Click OK to close the FEMWATER Time Control dialog. 5.3 Initial Conditions Third, set the FEMWATER initial conditions. 1. Select FEMWATER Initial Conditions to open the FEMWATER Initial Conditions dialog. 2. In the Files section, click the Open button to the right of Flow (press. head) (FLPH) to bring up the Open dialog. 3. Select Pressure Head Files (*.phd) from the Files of type drop-down. 4. Browse to the femwater-transport\femwater-transport\femmod_femwater directory and select femmod.phd. 5. Click Open to select the file and exit the Open dialog. 6. In the section on the right, under Flow file format (IVFILE), select Binary (1). 7. Click OK to close the FEMWATER Initial Conditions dialog. 5.4 Output Control Fourth and finally, have GMS create the concentration dataset solution file. 1. Select FEMWATER Output Control to open the FEMWATER Output Control dialog. 2. In the Save options (OC4) section, turn on Save concentration (.con) file (5). 3. Click OK to close the FEMWATER Output Control dialog. Page 6 of 8 Aquaveo 2018
7 6 Saving and Running the Model Now to save and run the model. 1. Click Save to save the project file with all of the new settings. 2. Select FEMWATER Run FEMWATER to bring up the FEMWATER model wrapper dialog. The FEMWATER model wrapper dialog should appear showing information on the progress of the model convergence. The model should converge within a few minutes. 3. When the model converges, turn on Read solution on exit and click Close to close the FEMWATER model wrapper dialog. 6.1 Animating the Fresh-water Surface Now to animate the fresh-water isosurface over time. 1. Right-click on 3D Mesh Data and select Expand All. 2. Select concentration under femmod (FEMWATER). 3. Select Display Animate to bring up the Options page of the Animation Wizard dialog. 4. Click Next to accept the defaults and go to the Datasets page of the Animation Wizard dialog. 5. Click Finish to close the Animation Wizard dialog and create the animation. This process may take a minute or so, depending on the speed of the computer. The Play AVI Application should open and begin playing the animation. Notice how the freshwater surface is affected by the pumping wells (Figure 4). 6. Once done reviewing the animation, close the Play AVI Application to return to GMS. Page 7 of 8 Aquaveo 2018
8 Figure 4 The last frame of the animation 7 Conclusion This concludes the tutorial. The following key topics were discussed and demonstrated: FEMWATER is a 3D finite element model that is more complex than MODFLOW (which is a 3D finite difference model). Setting up a FEMWATER transport model. Page 8 of 8 Aquaveo 2018
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v. 10.1 GMS 10.1 Tutorial MODFLOW LGR Create MODFLOW-LGR models with locally refined grids using GMS Objectives GMS supports building MODFLOW-LGR models with nested child grids. This tutorial shows the
v GMS 10.0 Tutorial MODFLOW Advanced PEST Pilot Points, SVD-Assist, Parallel PEST Prerequisite Tutorials MODFLOW PEST Pilot Points
v. 10.0 GMS 10.0 Tutorial Pilot Points, SVD-Assist, Parallel PEST Objectives Learn how to parameterize a MODFLOW model and run PEST to obtain optimal parameter values. Experiment with truncated singular
Objectives Construct an MT3DMS model using the grid approach, and learn how to simulate heat transport using MT3DMS.
v. 10.3 GMS 10.3 utorial Simulate heat transport using M3DMS Objectives Construct an M3DMS model using the grid approach, and learn how to simulate heat transport using M3DMS. Prerequisite utorials M3DMS
MODFLOW Interpolating Layer Data
GMS TUTORIALS MODFLOW For sites with complex stratigraphy and three-dimensional flow, a multi-layer MODFLOW model can be much more accurate than a one layer, two-dimensional model. When creating multi-layer
v. 9.0 GMS 9.0 Tutorial SEEP2D Sheet Pile Use SEEP2D to create a flow net around a sheet pile Prerequisite Tutorials None Time minutes
v. 9.0 GMS 9.0 Tutorial Use SEEP2D to create a flow net around a sheet pile Objectives Learn how to set up and solve a seepage problem involving flow around a sheet pile using the SEEP2D interface in GMS.
v MODFLOW SUB Package The MODFLOW SUB Package Interface in GMS GMS Tutorials Time minutes
v. 10.2 GMS 10.2 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
SRH-2D Additional Boundary Conditions
v. 12.2 SMS 12.2 Tutorial SRH-2D Additional Boundary Conditions Objectives Learn techniques for using various additional boundary conditions with the Sedimentation and River Hydraulics Two-Dimensional
Stratigraphy Modeling Horizons with Rasters Create solids from rasters using the Horizons Solids tool.
v. 10.3 GMS 10.3 Tutorial Create solids from rasters using the Horizons Solids tool. Objectives Learn what a raster catalog is and how it can be used to create subsurface models. Prerequisite Tutorials
v MODFLOW ETS Package GMS 10.3 Tutorial The MODFLOW Evapotranspiration Segments (ETS) package interface in GMS
v. 10.3 GMS 10.3 Tutorial The MODFLOW Evapotranspiration Segments (ETS) package interface in GMS Objectives Learn how to use the MODFLOW Evapotranspiration Segments (ETS) package interface in GMS and compare
Tutorial 7. Water Table and Bedrock Surface
Tutorial 7 Water Table and Bedrock Surface Table of Contents Objective. 1 Step-by-Step Procedure... 2 Section 1 Data Input. 2 Step 1: Open Adaptive Groundwater Input (.agw) File. 2 Step 2: Assign Material
SMS v Obstructions. SRH-2D Tutorial. Prerequisites. Requirements. Time. Objectives
SMS v. 12.1 SRH-2D Tutorial Objectives This tutorial demonstrates the process of creating and defining in-stream obstructions within an SRH-2D model. The SRH-2D Simulations tutorial should have been completed
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
v mod-path3du Transient Particle tracking with a transient MODFLOW-USG model GMS Tutorials Time minutes Prerequisite Tutorials mod-path3du
v. 10.3 GMS 10.3 Tutorial Particle tracking with a transient MODFLOW-USG model Objectives Learn more about GMS's mod-path3du interface and how transient simulations are done. Prerequisite Tutorials mod-path3du
Objectives This tutorial demonstrates how to perform unsteady sediment transport simulations in SRH-2D.
SMS v. 12.2 SRH-2D Tutorial Objectives This tutorial demonstrates how to perform unsteady sediment transport simulations in SRH-2D. Prerequisites SMS Overview tutorial SRH-2D SRH-2D Sediment Transport
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
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
PHT3D Transport and Mineral Reactions
v. 10.3 GMS 10.3 Tutorial PHT3D Geochemical Reactions Objectives Learn about transport and mineral reactions in PHT3D. Prerequisite Tutorials MT3DMS Grid Approach Required Components Grid Module MODFLOW
v. 9.0 GMS 9.0 Tutorial MODPATH The MODPATH Interface in GMS Prerequisite Tutorials None Time minutes
v. 9.0 GMS 9.0 Tutorial The Interface in GMS Objectives Setup a simulation in GMS and view the results. Learn about assigning porosity, creating starting locations, different ways to display pathlines,
v. 8.0 GMS 8.0 Tutorial MODFLOW Advanced PEST SVD, SVD-Assist, Parallel PEST Prerequisite Tutorials None Time minutes
v. 8.0 GMS 8.0 Tutorial MODFLOW Advanced PEST SVD, SVD-Assist, Parallel PEST Objectives Learn how to parameterize a MODFLOW model and run PEST to obtain optimal parameter values. Experiment with truncated
1. Open a MODFLOW simulation and run MODFLOW. 2. Initialize MT3D and enter the data for several MT3D packages. 3. Run MT3D and read the solution.
GMS TUTORIALS This tutorial describes how to perform an MT3DMS simulation within GMS. An MT3DMS model can be constructed in GMS using one of two approaches: the conceptual model approach or the grid approach.
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
v SRH-2D Post-Processing SMS 12.3 Tutorial Prerequisites Requirements Time Objectives
v. 12.3 SMS 12.3 Tutorial SRH-2D Post-Processing Objectives This tutorial illustrates some techniques for manipulating the solution generated by the Sedimentation and River Hydraulics Two-Dimensional (SRH-2D)
MT3DMS Grid Approach GMS 7.0 TUTORIALS. 1 Introduction. 1.1 Contents
GMS 7.0 TUTORIALS 1 Introduction This tutorial describes how to perform an MT3DMS simulation within GMS. An MT3DMS model can be constructed in GMS using one of two approaches: the conceptual model approach
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