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: Exit, Other and Entrance Loss Values in SWMM 5
The entrance, exit and other losses in SWMM 5 are computed at the upstream, downstream and midpoint of the sections of the link. However, if the normal flow equation is used for the link during a time step … Read the rest
Subject: The Groundwater flow in SWMM 5 Groundwater
The Groundwater flow in SWMM 5 is actually made up of three components:
1. A groundwater flow computed from the coefficient a1 and exponent b1
2. A groundwater flow computed from the coefficient a2 and exponent b2 and
3. A Surface Water … 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
.
via Blogger http://www.swmm5.net/2013/08/rdii-parameters-for-swmm-5.html… 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
Note: State InfoSewer solution solves for the link flow and node heads
Here is an example of how the Steady State InfoSewer solution solves for the link flow and node heads or depths:
• 1ST Flow is computed in each link and d and d/D is calculated based on … 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: Reading the Output of Older SWMM 5 versions in Newer SWMM 5 Versions
It is very easy to read the output graphs and output text file from older versions of SWMM 5 in newer versions of SWMM 5 as long as the rules are followed:
1. You need to … 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