Subject: How is the Volume 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 development process. … Read the rest
Subject: Hierarchy of Your Network in InfoSWMM and H2OMAP SWMM
In both InfoSWMM and H2OMAP SWMM you can run a subset of the network by using the Facility Manager to make part of thenetwork inactive and not solved. You can make the output files smaller if you are performing … Read the rest
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: Node Comparison in InfoSWMM and InfoSewer
1) Is there an option to set the manhole sealing method (i.e. locked
or unlocked) in InfoSWMM? You set the Surcharged depth to a positive value to prevent flooding and keep the pipes under pressure. You will still have flooding once the … Read the rest
Note: How to Calculate the Freeboard of a Node in InfoSWMM/H2OMAP SWMM from the Model Results
The freeboard for a node in InfoSWMM/H2OMAP SWMM can be calculated with a 4 step process:
1. Copy the Node Rim Elevations from the DB Tables for Junctions to Excel,… Read the rest
Subject: InfoSewer and H2OMAP Sewer New Features in 2011/2013
InfoSewer for Arc GIS 9 and 10 and H2OMAP Sewer had a many engine and GUI enhancements during 2011 to allow the programs to work better for models up to 50,000 elements that simulate water quality and hydrology. The improvements now
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
Subject: H2OMAP Sewer and InfoSewer Water Quality Options
You can model 8 options in H2OMAP Sewer and InfoSewer to simulate various aspects of Water Quality (Figure 1). If you make the base scenario no water quality you can have the same network, same loading but different aspects of water quality
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: Three Inertial Term Options in SWMM 5 and InfoSWMM/H2OMAP SWMM
The dynamic wave flow in SWMM5 and InfoSWMM is calculated from the following equation
Q = (Qold – dq2 + dq3*sigma + dq4*sigma ) / ( 1 + dq1 + dq5)
Where,
Qold = Last Time Step … Read the rest