RTC or Real Time Control Rules
| Control Rules |
Control Rules determine how pumps and regulators in the conveyance system will be adjusted over the course of a simulation. The use of control rules is explained in the following topics:
| · | Example Rules |
| · | Rule Format |
| · | Condition Clauses |
| · | Action Clauses |
| · | Modulated |
This is part of the #Inside_#SWMM5 series of blogs and is intended as a visual aid and code developer for the Storm Water Management Model Reference Manuals on https://www.epa.gov/water-research/storm-water-management-model-swmm I always think images (and some words) are best at explaining the internal working of code. I do encourage you to … Read the rest
Setting Controls For The Pump and Orifice
Using H2OMap SWMM , you may control the operational status of pumps and flow regulating structures by specifying their initial status, using the simple control rule, or using the RTC rule functionality. You will utilize all these three features to set the operational … Read the rest
How does a PID controller work in InfoSWMM and SWMMM 5 - this also applies to InfoSWMM SA
double getPIDSetting(struct TAction* a, double dt) // at each time step find the PID control changes for the current time step dt
// Input: a = an action object
// dt = … Read the rest
Subject: My History with Various Versions of SWMM: SWMM3, SWMM4, SWMM5, XP-SWMM and InfoSWMMI first learned about SWMM in a brochure from the University of Florida when I was just a 17 year old senior in High School. Water resources and the description of SWMM seemed to be worthy career
Subject: How Does a TYPE1 Pump Work in SWMM 5?
A SWMM 5 Type1 pump is called an offline pump but the name comes from SWMM 4 and the Pump is controlled by volume instead of depth or head as in the SWMM 5 TYPE2, TYPE3 and TYPE4 Pumps. The
Subject: How is the Orifice Setting Used in SWMM 5 RTC Rules?
The Real Time Control Rule for Orifice Setting can be a function of a Setting constant, Setting from a Curve, Setting from a PID controller and a Setting from a Time Series (Figure 1). The Setting affects … Read the rest
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
Subject: SWMM 5 Weir RTC Rules
This example SWMM 5 model closes a weir based on the depth at the upstream node of the Weir every 0.25 feet. You can see the effect of the RTC rules using a Scatter plot of Weir Flow versus Weir Depth in SWMM 5
Subject: What are the Equations for Weirs in SWMM 5, Part 2?
There are four types of Weirs in SWMM 5: Transverse, Sideflow, V Notch and Trapezoidal. The trapezoidal weir is a combination of the Sideflow and V Notch Weir and the Sideflow acts like a Transverse … Read the rest
Subject: SWMM 5 Leaping Weir Example
The attached example shows one way how SWMM 5 RTC Rules can be used to have the low flow go down a leaping weir orifice and the high flow go over the weir to the downstream section of the sewer.
via Blogger http://www.swmm5.net/2013/08/swmm-5-leaping-weir-example.html… Read the rest
Subject: How to Approximate a Timer in the RTC Rules of SWMM 5
SWMM 5 does not have a explicit timer in its Real Time Control (RTC) rules but you can approximate it by using a Control Curve as in the attached example model. The Control Curve will … 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
Here is an example Real Time Control (RTC) rule for the opening and closing of an orifice.
RULE Orifice1
IF SIMULATION CLOCKTIME >= 01:00:00
AND SIMULATION CLOCKTIME <= 2:00:00
THEN ORIFICE OR1@82309b-15009b SETTING = 1
ELSE ORIFICE OR1@82309b-15009b SETTING = 0
PRIORITY 1
; Opens up the orifice at … Read the rest