This is a top level workflow. This workflow includes all of the specific workflows needed in creating an SRH-2D project. Newer and infrequent SMS users should start here. More experienced users may skip steps with which they are already familiar.
To build an SRH-2D model in SMS, use the following steps:
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.
Begin creating a new arc by clicking in the graphics window at either arc end. If clicking on an existing feature node, vertex or arc, the new arc will snap to that object.
Double-click or press the Enter key to terminate the arc.
Use the Create Feature Node tool to create additional nodes alone or to split arcs.
2. Modify arcs.
Feature arcs often need to be edited after initial creation.
Use the Trim/Extend Arc dialog to select the target arc and source arc.
3. Generate domain extent arcs from other data sources.
Domain extents can be created from data outside of the Map module by converting the data to a mesh generator coverage.
1. Convert GIS objects to a map coverage.
1. Convert raster data to feature objects.
Converting raster data to feature objects can be done in one of two ways:
Right-click on the raster data and select Convert To | Feature Objects which will create a new map coverage with arcs along all contours.
Right-click on the raster data and select Convert To | Feature Objects at Elevation and enter a contour elevation to create arcs in a new coverage along the specified elevation.
Begin creating a new arc by clicking in the graphics window at either arc end. If clicking on an existing feature node, vertex or arc, the new arc will snap to that object.
Double-click or press the Enter key to terminate the arc.
Use the Create Feature Node tool to create additional nodes alone or to split arcs.
2. Modify arcs.
Feature arcs often need to be edited after initial creation.
Bathymetry type describes the elevation/topography source for the mesh nodes. Bathymetry types include a constant elevation value, interpolated elevation values from a scatter set, or interpolated elevation values from an existing mesh.
Material types can be assigned to a polygon using materials previously created in Materials Data dialog.
Begin creating a new arc by clicking in the Graphics Window at either arc end. If clicking on an existing feature node, vertex or arc, the new arc will snap to that object.
Double-click or press the Enter key to terminate the arc.
Use the Create Feature Node tool to create additional nodes alone or to split arcs.
2. Modify arcs.
Feature arcs often need to be edited after initial creation.
Right-click on the materials coverage and select the Materials Properties command.
In the Materials Properties dialog, add materials to the material list and assign Manning's n values to each material. If desired, change the fill display properties (color and texture) of each material.
2. Manage multiple material coverages.
If using multiple material coverages, they can be managed by:
Right-click on a materials coverage and select the Assign Materials To command.
In the Assign Materials dialog, append or replace materials to the selected material coverage.
4. Assign materials to polygons in the materials coverage.
Begin creating a new arc by clicking in the Graphics Window at either arc end. If clicking on an existing feature node, vertex or arc, the new arc will snap to that object.
Double-click or press the Enter key to terminate the arc.
Use the Create Feature Node tool to create additional nodes alone or to split arcs.
2. Modify arcs.
Feature arcs often need to be edited after initial creation.
Use the Trim/Extend Arc dialog to select the target arc and source arc.
2. Assign inflow boundary conditions.
Right-click on an arc using the Select Feature Arc tool and select the Assign Linear BC... command.
Specify the boundary condition type in the SRH-2D Linear BC dialog, which will typically be 'Inlet-Q' for inflow boundaries. Specify a constant or a time-varying discharge.
3. Create and assign outflow boundary conditions.
1. Create outflow boundary conditions arcs.
1. Create feature arcs, nodes and vertices.
In the Map module, create feature objects in the active coverage.
Begin creating a new arc by clicking in the Graphics Window at either arc end. If clicking on an existing feature node, vertex or arc, the new arc will snap to that object.
Double-click or press the Enter key to terminate the arc.
Use the Create Feature Node tool to create additional nodes alone or to split arcs.
2. Modify arcs.
Feature arcs often need to be edited after initial creation.
Use the Trim/Extend Arc dialog to select the target arc and source arc.
2. Assign outflow boundary conditions.
Right-click on an outflow arc using the Select Feature Arc tool and select the Assign Linear BC... command.
Specify the boundary condition type in the SRH-2D Linear BC dialog, which will typically be 'Exit-H' for outflow boundaries. Specify a constant WSE, a time-varying WSE, or a rating curve.
4. Create and assign structures (optional).
1. Create a culvert structure.
1. Create two culvert boundary condition arcs.
Create two feature arcs representing the upstream and downstream locations of the culvert.
1. Create feature arcs, nodes and vertices.
In the Map module, create feature objects in the active coverage.
Begin creating a new arc by clicking in the Graphics Window at either arc end. If clicking on an existing feature node, vertex or arc, the new arc will snap to that object.
Double-click or press the Enter key to terminate the arc.
Use the Create Feature Node tool to create additional nodes alone or to split arcs.
2. Modify arcs.
Feature arcs often need to be edited after initial creation.
Begin creating a new arc by clicking in the Graphics Window at either arc end. If clicking on an existing feature node, vertex or arc, the new arc will snap to that object.
Double-click or press the Enter key to terminate the arc.
Use the Create Feature Node tool to create additional nodes alone or to split arcs.
2. Modify arcs.
Feature arcs often need to be edited after initial creation.
Right-click and select the Assign Linear BC... command.
In the SRH-2D Linear BC dialog, assign the gate boundary conditions specifying the upstream and downstream arcs and the gate length, gate height, crest elevation, and type.
Begin creating a new arc by clicking in the Graphics Window at either arc end. If clicking on an existing feature node, vertex or arc, the new arc will snap to that object.
Double-click or press the Enter key to terminate the arc.
Use the Create Feature Node tool to create additional nodes alone or to split arcs.
2. Modify arcs.
Feature arcs often need to be edited after initial creation.
Using the Select Feature Arc tool, select both bridge pressure flow arcs.
Right-click and select the Assign Linear BC... command.
In the SRH-2D Linear BC dialog, assign the bridge pressure flow boundary conditions specifying the upstream and downstream arcs and the ceiling elevation and Manning roughness coefficient.
4. Create a weir structure.
1. Create two weir boundary condition arcs.
1. Create feature arcs, nodes and vertices.
In the Map module, create feature objects in the active coverage.
Begin creating a new arc by clicking in the Graphics Window at either arc end. If clicking on an existing feature node, vertex or arc, the new arc will snap to that object.
Double-click or press the Enter key to terminate the arc.
Use the Create Feature Node tool to create additional nodes alone or to split arcs.
2. Modify arcs.
Feature arcs often need to be edited after initial creation.
Right-click and select the Assign Linear BC... command.
In the SRH-2D Linear BC dialog, assign the weir boundary conditions specifying the upstream and downstream arcs and the weir length, crest elevation, and type.
Begin creating a new arc by clicking in the Graphics Window at either arc end. If clicking on an existing feature node, vertex or arc, the new arc will snap to that object.
Double-click or press the Enter key to terminate the arc.
Use the Create Feature Node tool to create additional nodes alone or to split arcs.
2. Modify arcs.
Feature arcs often need to be edited after initial creation.
Right-click and select the Assign Linear BC... command.
In the SRH-2D Linear BC dialog, assign the internal sink boundary conditions specifying the sink flow type. Enter a negative value to represent a source rather than a sink.
6. Create a link structure.
1. Create two link boundary condition arcs.
Create two feature arcs representing inflow and outflow locations of the link. Often these connect otherwise disconnected portions of a mesh.
1. Create feature arcs, nodes and vertices.
In the Map module, create feature objects in the active coverage.
Begin creating a new arc by clicking in the Graphics Window at either arc end. If clicking on an existing feature node, vertex or arc, the new arc will snap to that object.
Double-click or press the Enter key to terminate the arc.
Use the Create Feature Node tool to create additional nodes alone or to split arcs.
2. Modify arcs.
Feature arcs often need to be edited after initial creation.
Right-click and select the Assign Linear BC... command.
In the SRH-2D Linear BC dialog, assign the link boundary conditions specifying the inflow and outflow arcs along with the inflow type and link lag method.
5. Create and assign wall boundary conditions (optional).
1. Create a wall boundary conditions arc.
1. Create feature arcs, nodes and vertices.
In the Map module, create feature objects in the active coverage.
Begin creating a new arc by clicking in the Graphics Window at either arc end. If clicking on an existing feature node, vertex or arc, the new arc will snap to that object.
Double-click or press the Enter key to terminate the arc.
Use the Create Feature Node tool to create additional nodes alone or to split arcs.
2. Modify arcs.
Feature arcs often need to be edited after initial creation.
Create a new coverage with the SRH-2D "Monitor" type.
Select Map Data in the Project Explorer and use the New Coverage right-click command.
Use the New Coverage dialog to create a new coverage by selecting the desired coverage type, and naming the coverage.
2. Create feature points in the coverage.
Use the Create Feature Point tool to create points in the coverage. Typically at least two points are created: one in the channel near the upstream boundary, or the bridge opening, and the other in the channel near the downstream boundary.
9. SRH-2D simulation setup.
1. Create a new SRH-2D simulation.
After creating the components of a simulation, create a new SRH-2D simulation.
The solution file should load after running SRH-2D assuming the Load Solution option was checked in the model wrapper before exiting the model run. If loading the solution file separately from the model run, do the following:
Begin creating a new arc by clicking in the Graphics Window at either arc end. If clicking on an existing feature node, vertex or arc, the new arc will snap to that object.
Double-click or press the Enter key to terminate the arc.
Use the Create Feature Node tool to create additional nodes alone or to split arcs.
2. Modify arcs.
Feature arcs often need to be edited after initial creation.
Begin creating a new arc by clicking in the Graphics Window at either arc end. If clicking on an existing feature node, vertex or arc, the new arc will snap to that object.
Double-click or press the Enter key to terminate the arc.
Use the Create Feature Node tool to create additional nodes alone or to split arcs.
2. Modify arcs.
Feature arcs often need to be edited after initial creation.
Begin creating a new arc by clicking in the Graphics Window at either arc end. If clicking on an existing feature node, vertex or arc, the new arc will snap to that object.
Double-click or press the Enter key to terminate the arc.
Use the Create Feature Node tool to create additional nodes alone or to split arcs.
2. Modify arcs.
Feature arcs often need to be edited after initial creation.
The summary report should automatically appear in a web browser when the Summary Report tool is finished running. If it does not, please follow the steps below:
Navigate to where the project file is saved and open the reports folder then the srh-2d_summary_reports folder.
Select the "index.html" file and open it in a web browser.
2. Review Data.
The summary report includes much numerical and model data. It also includes three interactive features for reviewing data:
Use the links in the table of contents to quickly navigate to a desired section.
Use the maps to visually review coverages, mesh, and scatter set data by zooming and panning.
Use the plots to visually review data by using the toolbar on top of the plot.
