Siphon Modeling in InfoSewer
Here is a typical view of a siphon in InfoSewer, the rising links have a d/D of 1 and the dropping links typically have a d/D value less than 1. The q/Q for the rising links is based on the slope and the dropping links typically have a q/Q less than 1 as the full flow is high due to the steep slopes. You can show both the d/D and q/Q values in an Arc Map Display by using the following code. I find it easier to first plot one variable using the InfoSewer Map Display followed by editing the TOC Properties for Pipes to show more than one variable at a time in the Label properties.
Function FindLabel ([D_OVER_D], [Q_OVER_Q] )
If IsNull([D_OVER_D]) then Exit Function
FindLabel ="" & FormatNumber([D_OVER_D],3) & " d/D " & "" & FormatNumber([Q_OVER_Q],3) & " q/Q"
End Function
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SWMM 4 and SWMM 5 St. Venant Solutions Contrasted
by dickinsonreSWMM 4 and SWMM 5 St. Venant Solutions Contrasted 1. Compute at time t+delta t the values of dQ/dt for the Links and dH/dt for the Nodes from the properties at time t2 Iterate at least 2 times until either all nodes and links are converged or a maximum of 8 iterations are reached3. Use the values of Q and H at time t+delta t for the new time stepThe SWMM5 Solution for Flow and Depth at each time step. The new depth and new flow is always based on the old depth and old flow and normally converges fast as the flow is gradually varied. The solution is iterative and implicitly uses the new depth and flow at each iteration.The SWMM4 Solution for Flow and Depth is solved Explicitly at each time step. The new depth and new flow is always based on the old depth and old flow and and a half and full time step during the time step.
The SWMM 4 Dynamic Wave Solution for ISOL=0
The attached PDF file is a copy of the Extran 3 solution in the SWMM 4 manual explaining the ISOL=0 solution in SWMM 4 / Extran 4. The current SWMM 5 solution in its dynamic wave solution is an adaptive time step iterative solution of the ISOL=0 solution in SWMM 4.
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The SWMM 4 Dynamic Wave Solution
The attached PDF file is a copy of Appendix C of the SWMM 4 manual explaining the three St Venant solutions in SWMM 4 / Extran 4. The current SWMM 5 solution in its dynamic wave solution is an adaptive time step iterative solution of the ISOL Zero solution in SWMM 4.
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Continuous Simulation using SWMM 5 LID and Groundwater Features in a Linked 1D/2D Network using InfoSWMM 2D for a 50 Year Period
A poster at the recent ECI conference on the Past, Present and Future of Watershed modeling.
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The Structure of InfoSWMM in Arc Map
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How to Create an InfoSWMM model
An InfoSWMM model can be newly created from a CSV file but it helps to have an idea of the maximum extents before you initialize the Arc Map project. Use the ArcGIS default and Edit the extents of your future imported network (Figure 1). Import the CSV files (Figure 2) and define the imported variables (Figure 3) followed by an Update Map from DB (Figure 4) which will draw your imported nodes and links on the Arc Map screen. The updated Map should be within the extents of your defined spatial reference (Figure 5). It is important to have the proper spatial reference for your imported data in Arc Map. If you do not have the proper extents then when you update the Map from DB you will have a warning message "The coordinates or measures are out of bounds".
Figure 1. Import a background shape file and initialize your InfoSWMM map to the coordinates of the shapefile.
Figure 2. Import a CSV file for both pipes and nodes using the Import Manager of InfoSWMM
Figure 3. Set up the Field Mapping between the CSV parameters and the Node and Link Parameters of InfosWMM.
Figure 4. Update the Map from the DB tables you just imported using the command Force All Network.
Figure 5. The imported model has the same coordinates as the original imported shapefile.
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How to Create an InfoSWMM model
An InfoSWMM model can be newly created from a CSV file but it helps to have a background map or shapefile to initialize the Arc Map project. BEFORE initializing yourInfoSWMM map Add a data layer using the Arc Map command Add Data. Create a new InfoSWMM project using the same spatial reference as your added shapefile (Figure 1). Import the CSV files (Figure 2) and define the imported variables (Figure 3) followed by an Update Map from DB (Figure 4) which will draw your imported nodes and links on the Arc Map screen. The updated Map will have the same coordinates as the background shapefile (Figure 5). It is important to have the proper spatial reference for your imported data in Arc Map.
Figure 1. Import a background shape file and initialize your InfoSWMM map to the coordinates of the shapefile.
Figure 2. Import a CSV file for both pipes and nodes using the Import Manager of InfoSWMM
Figure 3. Set up the Field Mapping between the CSV parameters and the Node and Link Parameters of InfosWMM.
Figure 4. Update the Map from the DB tables you just imported using the command Force All Network.
Figure 5. The imported model has the same coordinates as the original imported shapefile.
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How to Save Node and Link Summary
The export manager of H2OMAP SWMM is very flexible, you can export shape, MIF and CSV files but you have to do some copy and pasting to allow the program to export ALL of the node and pipe summary tables. The export manager will export any node or pipe information in the DB hydraulic and information tables. If you copy and paste, for example, the output pipe summary table to the Pipe information tables (Figure 1) then you can use the Export Manager (Figure 2) to save the shape file with tables(Figure 4) and view the shape file in Arc Map (Figure 4). The TOC properties in Arc Map can be used to show the maximum d over D or maximum Q over Qfull values in Arc Map using this VBScript.
Function FindLabel ( [DOVEMAXD] )
FindLabel = "" & FormatNumber([DOVEMAXD],2) & ""
End Function
Figure 1. Copy and Paste the Pipe Summary information from the Output Tables to the Pipe Information Tables.
Figure 2. Select a link Shapefile using the Export Manager
Figure 3. Save the Link Information and other data to a shape file.
Figure 4. The created shapefile added to Arc Map and displayed using the Layer Properties of Arc Map
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How to Use the Output Relate in Ex
You have to perform the following steps:
1. Make an Output Relate (using the Operations Tab of the H2OMAP SWMM Browser) which will be the same as the Pipe Summary Table in the Output Report Manager
2. Run the model to make the Output Relate and then update the Relate (Figure 1) 3. Using Windows Explorer navigate to the HSDB folder of your H2MAP SWMM project 4. Continue to the Relate Subfolder and open up the Relate DBD file in Excel (Figure 2) 5. You cannot SAVE this file but you can save is as a new Excel File 
Figure 1. Output Relate in H2OMAP SW
Figure 2. How to Use the Output Relate in Ex
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Advanced Labeling in InfoSWMM
Here is how to get the maximum depth shown in millimeters or inches on a HGL Plot in InfoSWMM or H2OM
Keys:
Use Other Units instead of feet or meters, and
Use the Advanced Labeling in InfoS
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Subject: How to Use Two Control Curves in SWMM 5 to Simulate a Head Difference Rule
The SWMM 5 control rules for Real Time Control (RTC) do not allow the rule to be governed by the head across the orifice but does allow rules based on the depth, head and inflow at any node. If you have an Orifice in which you want the Orifice to be open when the head difference across the Orifice is either less than or greater than zero then and closed when the head difference is close to zero then you can use two Orifices (Figure 1) and two rules (Figure 2) to control the orifice setting for Orifice1 and Orifice2. In attached file the two rules have the settings set to two control curves. Orifice1 will start open and close gradually as the depth at Node UPNode increases, Orifice2 will start closed and gradually open when depth in Node DNode increases. Possible variations are to control Orifice1 based on the DNode and node UPNode to control Orifice2.
RULE Orifice1
IF NODE UPNode Depth >= 0
THEN ORIFICE ORIFICE1 SETTING = Curve RuleOrf1
PRIORITY 10
RULE Orifice2
IF NODE DNode Depth >= 0
THEN ORIFICE ORIFICE2 SETTING = Curve RuleOrf2
PRIORITY 10
Figure 1. Two Orifice Solution
Figure 2. Two Orifice solution to have control over the Orifice(s) at both the upstream and downstream nodes.
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This is not a photo of the Earth from some far-flung satellite. This is the output of a computer that has been programmed to take those laws of physics and apply them to the Earth. It has data about sunlight hitting the Earth (which includes variations for season); it knows about the composition of the Earth’s atmosphere and how the air’s temperature changes with latitude, longitude, and height; it can calculate how much water evaporates and where it rains or snows out; it accounts for fires, dust, the Earth’s rotation, the local geography, and even humanity’s effect on the environment.And when it’s done, it can show us what the Earth looks like under various conditions. In this case, the blue swirls over the oceans trace sea salt; green is smoke from forest fires, white is sulfate particles (emitted from volcanoes and the burning of fossil fuels), and reddish-orange is dust blown about. Slate Link
How to Use the Map Display for the Maximum Adjusted d/D or Maximum q/Q in an EPS InfoSewer Simulation
You can do a Map Display of the adjusted d/D values (Figure 1) from the Gravity Main Range Report (Figure 2) to show those pipes that are full thematically. For example, the links in red in Figure 1 show the effect of the pump blockage and the links in green are those NOT full due to the pump blockage. You will need to copy the adjusted d/D or the maximum q/Q values from the Range report to the Link Information Table to have some values to Map (Figure 3 and 4). The maximum adjusted d/D or the Maximum q/Q can be mapped using the new link information (Figure 5).
Figure 1 Map Display of the Maximum Adjusted d/D from the Gravity Range Report.
Figure 2. Maximum Adjusted d/D or M
Figure 3. Create a new variable In the Link Information Table.
Figure 4. New variables for the Map Display from the Range Report in the Pipe Information Tables for Each Link.
Figure 5. Link Information new Parameters of Variables can be used to Display the maximum d/D or
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