#INFOSWMM
Subject: Import of Sections from SWMM 5 into InfoSWMM and H2oMAP SWMM
A very useful hidden feature of the import SWMM 5 to InfoSWMM and H2OMAP SWMM is the ability to import all of the data or just one section. For example, you can import the LID data, DWF patterns, … Read the rest
Subject: How is the Mass Balance Calculated in the SWMM 5 Groundwater Component?
The groundwater component of SWMM 5 is found in the gwater.c code. It (as is all of SWMM 5) is excellently written in small functions by Lew Rossman of the EPA during the SWMM 5… Read the rest
Note: How to Search These Blogs for Information
In each of the blogs search for a term or a set of terms using the search button. For example, here is http://swmm5.blogspot.com with a search for venant
An equivalent Search in http://www.swmm2000.com
An equivalent Search in http://swmm5.org/
An equivalent Search in … Read the rest
Note: Comparison of the H2OMAP SWMM Hazen Williams Force Main Solution to a HW Solution
In this example, we compare the force main head loss in four links in H20Map SWMM to the head loss in a steady state HazenWilliams solution for the same length pipe, diameter and flow
Note: The SWMM 5 1D Components in InfoSWMM 2D
InfoSWMM 2D uses standard SWMM 5 components to connect the 1D Nodes to the 2D Mesh. A bottom outlet orifice at the maximum depth of the node drains to a SWMM 5 Outfall at the fixed elevation equal to the Node … Read the rest
Note: How Dry Weather Flow is Used in InfoSWMM at a Node
There are four components to the Dry Weather Flow (DWF) in InfoSWMM:
1. The mean flow in user units at the node,
2. The DWF Allocation Code – if you are using the DWF Allocator
3. … Read the rest
Subject: Link Simulated Parameters used in either the Normal Flow or St Venant Equation of SWMM 5
St. Venant equation – this is the link attribute data used when the St. Venant Equation is used in SWMM 5. Simulated Parameters from the upstream, midpoint and downstream sections … Read the rest
Subject: RDII Initial Abstraction in SWMM 5
The initial abstraction in each of the three components of RDII in SWMM 5 are updated at each time step. The initialabstraction (ia) is:
ia = iaMax - iaUsed
based on the maximum amount of ia, the ia used (iaUsed), the recovery … Read the rest
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 … Read the rest
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… Read the rest
Subject: SWMM 5 Clocktime RTC Rules for Pumps, Weirs and Orifices
You can use the Control or RTC rules in SWMM 5 to adjust the settings of the weirs, pumps and orifices based on the clock time each day of your simulation. Here is an example that will … Read the rest
Subject: How to see the effect of the Pump Setting in the RTC Rules of InfoSWMM and H20MAP SWMM
Step 1. Pump Startup and Shutoff Depth
Depths to turn the Pump On and turn the Pump Off. In this example, the pump will be off when the Wet Well Depth … Read the rest
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EPA SWMM 5 Build 5.0.022 (04/21/11)
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Engine Updates
1. The following fixes and updates were made to the LID module of the code (lid.c):
a. The Drain Delay time for a Rain Barrel LID is now correctly converted internally from hours to seconds.
b. … Read the rest