SMS:SRH-2D Project Workflow

To build an SRH-2D model in SMS, use the following steps:

1. Start a new SMS project.
1. Start SMS, or clear existing projects in SMS. If SMS is already running, select File | Delete All. A new project can also be started by using CTRL + N. 2. Set the display projection. Select the Display | Projection... command. Set the horizontal and vertical projection using the Display Projection dialog.

2. Import data.

1. Gather and open image files. Images are imported into the GIS module in SMS. 1. Open local images. Load images from local computer files using the File | Open... command. Alternatively, drag and drop the file into the Graphics Window in SMS. 2. Import images from the web. 1. Import static images. Use the File | Import from Web command. Select a location in the Virtual Map Locator. Set a projection for the project using the Display Projections dialog. Use the Data Service Options dialog to select a web service or catalog. Use the Advanced options if needing to access a unique or unavailable data source. Save the data file and import the data into SMS. 2. Import dynamic images. Use the File | Add Online Maps command. Select a location in the Virtual Map Locator. Set a projection for the project using the Display Projections dialog. Use the Data Service Options dialog to select a web service or catalog. Save the data file and import the data into SMS. 2. Gather and open geometric data files. 1. Import map data. Use the File | Open... command to import map data such as Map files, boundary ID files, or boundary XY files. Alternately, drag and drop the file into the Graphics Window in SMS. 2. Import GIS data. Use the File | Open... command to import GIS data files such as Shapefiles, MIF/MID files, Lidar files, or raster files. Alternatively, drag and drop the file into the Graphics Window in SMS. 3. Import scatter data. Use File | Open... to open files with scatter data such as scatter point files, ASCII dataset files, binary dataset files, tabular data files, or XYZ files. Alternatively, drag and drop the file into the Graphics Window in SMS. Use the File Import Wizard to specify how to import the data. 4. Import CAD data. Verify the CAD file type is readable by SMS before importing it. SMS can import DXF and DWG files. Use the File | Open... command to launch the Open dialog (or drag and drop) to import the CAD files. The data should load in layers into the Project Explorer. 5. Review and set object projections. Right-click on an object in the Project Explorer and select the Projection command. Set the horizontal and vertical projection using the Object Projection dialog. To set a global projection, use the Horizontal Projection dialog.

3. Review data.

1. Review elevation data for errors. 1. Use the Dataset Info dialog. Find the "Z", "elevation" or "depth" datasets on the geometric object (mesh, TIN, grid, raster) that is being reviewed Right-click on elevation data and select Info. Review information in the Dataset Info dialog to see that the range of values are as expected. 2. Use contour display options. Turn off Points and Triangles, then turn on Contours in the Scatter tab of the Display Options dialog. Set contour options in the Contours tab. The "Color Fill" option is recommended for this. Look for inconsistent points (points with values much higher/lower than their neighbors or regions where no data points exist). Verify that the region being modeled is covered by the elevation/depth data and there are no holes. 3. Rotate the elevation data. Use the Rotate tool to examine the elevation data from different angles. 2. Remove erroneous points and triangles. After reviewing the imported data, points or triangles covering regions where there are no data points should be deleted. This could include outlier points or thin triangles. 1. Use the Scatter Options dialog. Open the Scatter Options dialog. Select or delete duplicate points. Select or delete long triangles. Select thin triangles. Use a triangulation optimization option. 2. Manually remove points. Use Select Scatter Point tool to select erroneous points in the scatter set. Review and edit point data in the Edit Window. Delete erroneous points. 3. Add breaklines. Select the Create Breakline tool. Click along points of a common elevation, such as at a bank toe or levee crest, to connect these points in the surface. Use the Backspace key to back up if an erroneous selection is made. Double-click or press Enter key to complete the breakline. 4. Merge elevation datasets. Select the Scatter | Merge Sets command. Use the Merge Scatter Sets dialog to select elevation data to be merged.

4. Define model limits (domain).
Create a Mesh Generator map coverage. Digitize arcs to define mesh limits. Define mesh density and type (in Mesh Generator coverage). Create arcs along key breaklines. Stamp new features (channel, roadway embankment, or other). See also: Feature Stamping Workflow

5. Generate Mesh.
Set vertex spacing on arcs to define mesh element size. Specify mesh type for each polygon (pave / patch / none). Assign scatter data. Generate mesh.

6. Define materials.
Create a SRH-2D Materials coverage. Digitize material areas (polygons). Define material types and Manning’s roughness values. Defining materials from land use GIS data.

7. Set-up boundary conditions.

Create a Boundary Conditions coverage. Multiple boundary condition coverages can be created if needed, but only one boundary condition coverage can be added to simulation. Boundary conditions coverages can be merged together if needed. Assign boundary conditions to arcs. Inlet Q (options). Exit-H (options, including new normal/critical depth tool). Internal inflows and outflows (highlight approach – hole in mesh). Monitoring Lines. Optional Wall boundary conditions. Structures (culverts, weirs, bridge pressure flow). See also: SRH Culvert Workflow, SRH Pressure Flow Bridge Workflow

8. Set monitoring points.
Create a Monitoring Points coverage. Create feature points in the coverage.

9. Define obstructions.
Create a SRH-2D Obstructions coverage. Add feature arcs and points to coverage. Assign obstruction parameters to feature arcs and points.

10. SRH-2D simulation setup.
Create new simulation. Add components to simulation. Set up Model Control parameters. Check the model. Simulation execution. Troubleshooting.

11. Review results.
w Open _XMDF file. Results layers. Observation lines. Summary table. Run the Plot Wizard. Data calculator.

12. Compare datasets.
Create activity datasets Create scalar datasets Create vector datasets

13. Data visualization.
View results in graphics window. Create data plots. Create a film loop visualization.