Subject: InfoSewer and InfoSWMM Nodes
InfoSewer and InfoSWMM are link/node networks but the nodes are of different types in both models. InfoSewer has a distinction between loading manholes or junctions and chamber junctions that start or separate Force Main links. InfoSewer nodes are types 1 through 4 and InfoSWMM nodes are types 5 through 8 in this image.
Subject: InfoSWMM 2D Layer Properties and Mesh Results
You can use the Layer Properties for layers in the Table of Contents to see the Mesh depth and other simulation data for the 2D mesh in InfoSWMM 2D. The Mesh Depth can be seen using the Labels/Label Expression command and if you use an expression you can see the results data as well on the mesh. The 2D depth on each Mesh can be viewed as either Pie or Bar Charts – the graph shown below is a small pie with the diameter of the pie a function of the depth.
Subject: InfoSWMM 2D Layer Properties and Mesh ID
You can use the Layer Properties for layers in the Table of Contents to see the Mesh ID and other simulation data for the 2D mesh in InfoSWMM 2D. The Mesh ID can be seen using the Labels/Label Expression command and if you use an expression you can see the results data as well on the mesh. The Mesh ID is used as the label as well in the 2D Output modeling report. The Net Inflow and Net Outflow is by Mesh ID. In this example, the flow comes out of Node 80408 to Mesh ID 131 and enters the 1D network again at Mesh ID 848.
Subject: Steady State Flow Analysis in InfoSWMM using an External Flow Time Series
This can be easily created using a few steps in InfoSWMM. The flow ramp is in the Routing Interface File. The advantage is that you are able to have different ramps for the various nodes using this method.
Step 1: In Run Manager Set up the Process Models Options to use just the External Inflow and NOT the Dry Weather Flow
Step 2. Create the External Inflows File (see the help file for the format)
SWMM5 Interface File
300 - reporting time step in sec
1 - number of constituents as listed below:
FLOW CFS
2 - number of nodes as listed below:
36
24
Node Year Mon Day Hr Min Sec FLOW
36 2002 01 01 00 00 00 0.000000
24 2002 01 01 00 00 00 0.000000
36 2002 01 01 01 00 00 1000.000000
24 2002 01 01 01 00 00 1000.000000
36 2002 01 02 01 00 00 1000.000000
24 2002 01 02 01 00 00 1000.000000
This file loads two manholes with a ramped inflow up to 1000 cfs to again drown out the wet wells and cause the pumps to have a steady flow.
Step 3. Use the Tab File command and use the created External Inflows File
Step 4. Run the simulation and see if the pump flows are constant.
Subject: Steady State Flow Analysis in InfoSWMM using a Ramp DWF
This can be easily created using a few steps in InfoSWMM.
Step 1: Using Scenario Explorer make a cloned Child Scenario and a cloned DWF Set which will be later modified.
Step 2: Using DB Manager and the BlockEdit tool and increase the mean DWF by a factor of 10, 100 or 1000 to drown out all Wet Wells and cause the pumps to turn on and stay turned on during the simulation in the newly created DWF Set.
Step 3. Run the batch manager and create two output files – Normal and Steady State for comparison.
Step 4. You can now compare the two scenario’s using Output Manager and the Compare Graph tool. The Ramped Model should have constant flows in both links and pumps. It was not necessary to change any of the patterns.
Step 5. The model is still in balance – the excess DWF Inflow ends up as flooded flow and is listed as Internal Outflow.
