InfoSewer Maximum Number of Segments Sensitivity

InfoSewer Maximum Number of Segments Sensitivity

The three Run manager parameters, Maximum Number of Segments, Minimum Travel Distance and the Minimum Travel Distance in InfoSewer and H2OMAP Sewer affect the shape and flow attenuation of the flow in a link.  The effect of decreasing the Minimum Travel Distance is to reduce the peak flow and spread out the flow as the number of segments increases(Figure 1).  The smaller the minimum travel distance, which has the effect of increasing the number of segments in a link up the limit of the parameter Maximum Number of segments, the smaller the peak and the more attenuation of the flow in InfoSewer.

There is three ways to control attenuation in InfoSewer: (1) use the flow attenuation option, (2) increase the Maximum Number of Segments per link and (3) decrease the Minimum travel distance.    You can also use all three parameters to make more segments per link for long links and only a few segments for short links.

Smoother Switching Between Pumps in SWMM 5 - A better simulation of a VSP?

Subject - Smoother Switching Between Pumps in SWMM 5 - A better simulation of a VSP?

An oft requested feature in SWMM 5 is the ability to better simulate a variable speed pump.   The basic feature we are trying to model is multiple pumps between two nodes, one pump curve for all of the pumps and the ability to turn on and turn off the pumps based on either the head or depth at a Wet Well (Figure 1).  You can turn on or off the pumps Pump1, Pump2 and Pump3 based on the depth at the Wet Well but this feature is stepwise linear and usually uses three pump curves.  A better way to simulate this feature is to use the SWMM 5 Real Time Rules (RTC) to simulate the Pump setting based on a control curve.  

The Pump flow at any time step is the Pump Flow estimated from the Pump Curve (Figure 2) * The Pump Setting (Figure 3)

Each of the three pumps has a different Control Curve (Figure's 4, 5 and 6, respectively) which turns on or turns off the Pump based on a range of Wet Well Depths.  The overall effect is that the total flow summing all three pumps together is smoother (Figure 7 and Figure 8) and the user can simulate different pump speeds based on the same pump curve depending on which pump is currently on.

Figure 1.   Example RTC Rules and VSP Pumps in a SWMM 5 model.

Figure 2.  The Pump Curve Used for all 3 Pumps

  

Figure 3.  The Pump Setting for all Three Pumps

Figure 4.   Pump Control Curve for Pump 1.  The Pump has a Setting of ¼ between 0.5 and 3 feet at the node Wet Well and zero otherwise.

Figure 5.   Pump Control Curve for Pump 2.  The Pump has a Setting of 1/2 between 3 and 5 feet at the node Wet Well and zero otherwise.

Figure 6.   Pump Control Curve for Pump 3.  The Pump has a Setting of 1 above 5 feet at the node Wet Well and zero otherwise.

Figure 7.  The Flow in all 3 Pumps.

  

Figure 8.  The total flow from all three Pumps to the downstream node.

Leaping Weir Example in SWMM 5 and InfoSWMM, Alternative

Leaping Weir Example in SWMM 5 and InfoSWMM, Alternative

This is an example SWMM 5 model that can be imported into InfoSWMM or H2OMap SWMM using the Exchange/Import Command.   The low flow falls over the berm of the leaping weir into a rectangular open channel but the the "falls" is governed by an OULET Depth/Discharge Type in SWMM 5.  The flow increases in the OUTLET until a depth of 1 feet is reached where the weir starts to operate.  The OUTLET increases in flow from zero to 1 feet but still flows at a reduced rate when the weir starts to operate.  The weir stops flowing when the depth goes below 1 foot on the berm.

SWMM 5 Input File Link
Background Image

Leaping Weir With Low Flow Depth/Discharge OUTLET

H2OMAP Sewer and InfoSewer DB Queries to find Loading Manholes

Subject:   H2OMAP Sewer and InfoSewer DB Queries to find Loading Manholes

This Database Query (DB) will find all loading Manholes with a Load1 and a Load2 greater than 0.  InfoSewer has up to ten possible loads in a Manhole.  You can use the DB Query (Figure 1) to create a Query Report to show all of the Manholes with a non zero loading for both Load1 and Load2.  New Queries can be made to show any combination of the ten Manhole Loadings either by altering the DB Query or creating a new DB Query.

Figure 1. DB Query to find Manholes with Load1 and Load2 greater than 0.0

Figure 2.  Query Report for the DB Query

How to Use Group Delete to Make A Smaller Model in SWMM 5

How to Use Group Delete to Make A Smaller Model in SWMM 5

Use Select All, Group Delete and the Tag Feature

1.        Label or Tag all of your Subs as Out and make the one you really want to simulate called Domain
2.       Select the whole model using the Select All command
3.       Delete all Subs with Out and only the Domain will remain
4. 
   

Calibration data in H2OMAP SWMM, InfoSWMM and SWMM 5 does NOT have to be at the same time step

Calibration data in H2OMAP SWMM, InfoSWMM and SWMM 5 does NOT have to be at the same time step pic.twitter.com/S1leombWqs
— RDickinson (@RDickinson) July 1, 2013

Canada Day and a SWMM 5 Model with Flow Dividers

Canada Day and a SWMM 5 Model with Flow Dividers

Happy Canada Day,  A SWMM 5 Model with Canada Day as the WaterMark along with an Interesting SWMM 5 Model with Flow Dividers - it only works in Kinematic Wave Mode

Flow Divider Inp File
Canada Day Image

Check out my animated twitter snapshot

Check out my animated twitter snapshot. https://t.co/G5L0jwPAJ1
— RDickinson (@RDickinson) June 26, 2013

Cities Are a New Kind of Complex System: Part Social Reactor, Part Network

Cities Are a New Kind of Complex System: Part Social Reactor, Part Network

Scientists have derived a series of mathematical formulas that describe how cities' properties vary in relation to their population size, and then posits a novel unified, quantitative ... full story  from Science Daily http://www.sciencedaily.com/releases/2013/06/130620142925.htm

Two Pass InfoSewer Solution

Two Pass InfoSewer Solution

🔰The Two-Pass InfoSewer Solution method refines the estimation of flow within sewer networks by employing a dual-stage analysis. Initially, in the first pass, the system calculates the loads at each manhole and subsequently deduces the flow in the connecting links. This initial flow estimation is utilized to determine the preliminary depth-to-diameter ratio (d/D), the values of which you are presently mapping.

🔰Subsequently, the second pass of the solution process takes place. This stage is critical as it accounts for complex hydraulic phenomena, including backwater effects, surcharge conditions, and pressurized flow. It is during this phase that the depth-to-diameter ratio is adjusted, often resulting in an increased d/D value compared to the initial pass. This adjusted d/D is depicted in the Hydraulic Grade Line (HGL) plot.

🔰Utilizing the adjusted d/D from the second pass provides a more accurate indication of pipeline capacity and performance, particularly identifying pipes operating at or above 75% fullness. This metric is essential for effective sewer system management, offering a clearer insight into the potential for overflow and the need for infrastructural intervention.

Adjusted d/D is a better way of finding those pipes that are more than 0.75 full

How to Locate Parallel Pipes in H2OMAP SWMM

How to Locate Parallel Pipes in H2OMAP SWMM

You can use the command *Utility/Network Review Fix/Locate Parallel Pipe/Show as Domain *or as list of ID's

Utility/Network Review Fix/Locate Parallel Pipe/Show as Domain 

Massive Flooding In Alberta Canada Forces 75,000 To Flee

By Rebecca Leber posted from Climate Progress on Jun 22, 2013 at 3:00 pm

Alberta, Canada. Credit: AP

Parts of Alberta, Canada were hit by extreme flooding the size of New York State on Friday, forcing 75,000 to evacuatetheir homes. Hit by heavy rain, people have abandoned their cars and low-lying residences in flooded waters Mayor Naheed Nenshi described as “an ocean at the moment.”

Across the world, cities in Germany have also been wrecked by flooding — one estimate puts the damage as high as $7.7 billion. Climate science explains that global warming leads to a 5 to 10 percent increase in rainfall, and subsequently leads to a higher risk of flooding.

As Climate Central notes in its reporting on the Calgary floods: “A study published in the journalNature Climate Change on June 9 found that flood frequency as well as the number of people at risk of inundation from flood events are both likely to increase as the world continues to warm.”

Heavy precipitation extremes, which sometimes result in river flooding, have been increasing in much of the U.S. east of the Mississippi River. Credit: Climate Central.

Alberta is home to controversial tar sands development, where the city of Calgary happens to be a source of climate denier arguments: The Calgary Herald, an influential paper in western Canada, has spouted climate denier points on its editorial page. The University of Calgary, meanwhile, was once paid to distribute resources opposing climate change science.

How to Find Duplicate Links in InfoSWMM

1. Make a table of all  From Nodes for all of the links using Conduit Information,
2. Made an output DBF table using the summary command of the Open Attribute Table of Arc Map
3. Joined the output DBF table to the Junction layer
4. Labeled all Nodes that had more than one outgoing link
5. You can see on the screen the possible duplicate links and decide which are valid and which are not allowed

How to Find Duplicate Links in InfoSWMM pic.twitter.com/BUJvhIkGnd
— RDickinson (@RDickinson) June 23, 2013

The meaning of Geom1, Geom2, Geom3 and Geom4 in InfoSWMM and H2OMap SWMM

The meaning of Geom1, Geom2, Geom3 and Geom4 in InfoSWMM and H2OMap SWMM pic.twitter.com/ChdI3IQq6t
— RDickinson (@RDickinson) June 21, 2013

All of the rivers in the USA

Photo: mishagl: All of the rivers - Perhaps inspired by All Streets, Ben Fry’s map of all the streets in the... http://t.co/4xO9KdIdtP
— RDickinson (@RDickinson) June 20, 2013

Liu Yang introduces delegates to GIS-Based design solution InfoSewer at a packed @innovyze UK User Group

Liu Yang introduces delegates to GIS-Based design solution InfoSewer at a packed @innovyze UK User Group http://t.co/wD4Y11Wnkx
— Innovyze (@Innovyze) June 19, 2013

H2S Modeling in InfoSewer

H2S Modeling in InfoSewer, the basic model needs pic.twitter.com/OyfeMekrUU
— RDickinson (@RDickinson) June 17, 2013

How to Use Excel to Make Random X, Y Coordinates in SWMM 5

Node	X	Y	Rand X	Rand Y
A	2465753425	-1799501868	1114137518	-1734364827
B	1220423412	-915317559.2	959332294.5	-427183555.6
C	1207970112	-2970112080	939805860	-417442286.9
D	-485678704.9	2970112080	-172000249.5	1835904922
E	-2789539228	1388542964	-2050647732	326604825.1
F	-4221668742	-130759651.3	-3537896272	-59872442.99

If you have a SWMM 5 file without any X, Y  coordinates you can assume an X and a Y and then use Excel to make each pair random by using the RAND() function.  You at least will see each of the nodes on the screen with associated links.

How to Estimate the Needed Time Step for your Model using DB Tools in InfoSWMM

How to Estimate the Needed Time Step for your Model using DB Tools in InfoSWMM pic.twitter.com/zpoZyNPQaq

— RDickinson (@RDickinson) June 14, 2013

How to Make Custom Labels in InfoSWMM and InfoSewer

How to Make Custom Labels in InfoSWMM and InfoSewer pic.twitter.com/ikx0dxsl01

— RDickinson (@RDickinson) June 14, 2013

How to simulate a Quasi Steady Run in InfoSWMM, H2OMap SWMM or SWMM 5

How to simulate a Quasi Steady Run in InfoSWMM, H2OMap SWMM or SWMM 5 pic.twitter.com/4un4P19HFo
— RDickinson (@RDickinson) June 14, 2013

Steps in Merging Two InfoSWMM Models without any Scenarios

Steps in Merging Two InfoSWMM Models without any Scenariostwitpic.com/cwik9h

— RDickinson (@RDickinson) June 10, 2013

Wikipedia Traffic for the SWMM versus EPANET Articles

Subject:  Wikipedia Traffic for the SWMM versus EPANET Articles

Wikipedia has one article for EPANET and three articles for SWMM 5 (two are redirected to the Stormwater Management Model Main Article).  The statistics for the last three years (data before 2007 is unavailable) show an average of 28 visitors per day to SWMM and 16 per day to EPANET).  The search name has switched from the word SWMM to Stormwater Management Model starting in 2009.

Losses from a Subcatchment in SWMM 5 are composed of Evaporation + Infiltration = Total Losses

Losses from a Subcatchment in SWMM 5 are composed of Evaporation + Infiltration = Total Lossestwitpic.com/cv8oc5
— RDickinson (@RDickinson) June 4, 2013

Applicazione di tecnologie BMP ai sistemi di drenaggio urbano , It is about SWMM 5 and LID's

A good thesis from Italy on modelling BMP's and LID's in an Urban Environment
Applicazione di tecnologie BMP ai sistemi di drenaggio urbano

Figure 1,  Applicazione di tecnologie BMP

How to Use Map Display to show flooding in H2OMap SWMM

How to Use Map Display to show flooding in H2OMap SWMMtwitpic.com/cubswl
— RDickinson (@RDickinson) May 30, 2013

Making Wastewater Systems Smarter

Making Wastewater Systems Smarter

Link http://www.innovyze.com/news/1494/Making_Wastewater_Systems_Smarter

Making Wastewater Systems Smarter

Custom shape in SWMM 5

You can use a custom shape in SWMM 5 for a closed Link or if it is an open channel then you can use a Transect Section as in HEC-RAS

You use the custom shape,
Make a Table of Depth/Full Depth and Width/Full Depth

Top Width of LID is Important for a Swale in the Subcatchment Dialog

Top Width of LID is Important for a Swale in the Subcatchment Dialog twitpic.com/ctmvrq

— RDickinson (@RDickinson) May 27, 2013

Two Methods to Calibrate RDII RTK parameters in H2OMAP SWMM and InfoSWMM

Two Methods to Calibrate RDII RTK parameters in H2OMAP SWMM and InfoSWMM

There are two methods to calibrate the RTK parameters for RDII Analysis in InfoSWMM and H2OMAP SWMM.  The two methods are similar but use a different approach to calibrate the data:

1.       The RDII Hydrograph component of the Calibrator Add On also uses a Genetic Algorithm to calibrate the upstream RDII locations based on monitored flow but using the hydraulic network for the calibration.
2.      The RDII Analyst uses a Genetic Algorithm to Calibrate the RTK parameters for one location using monitored rainfall and flow data.  This calibration does not take into account the hydraulic routing in the network. 

Figure 1.  RDII Analyst and GA Calibrator

If you use the DOS Version of SWMM 5 be careful to NOT have spaces in directory names

If you use the DOS Version of SWMM 5 be careful to NOT have spaces in directory names twitpic.com/csq2kj
— RDickinson (@RDickinson) May 24, 2013

InfoSWMM can import H2OMAP Sewer, InfoSewer and H2OMAP SWMM models

InfoSWMM can import H2OMAP Sewer, InfoSewer and H2OMAP SWMM models twitpic.com/csq1dp
— RDickinson (@RDickinson) May 24, 2013

Water Providers of North America v 2.0 infographic

Water Providers of North America v 2.0 infographic

Water Providers of North America v 1.0 infographic

Representation of Surcharging in 1D Open Channels in InfoWorks ICM and CS

Representation of Surcharging in 1D Open Channels in InfoWorks ICM and CS blog.innovyze.com/2013/05/23/rep…
— RDickinson (@RDickinson) May 23, 2013

GA Calibration Options in InfoSWMM help find the best parameters

GA Calibration Options in InfoSWMM help find the best parameterstwitpic.com/cse4qp
— RDickinson (@RDickinson) May 22, 2013

Nodes in InfoSWMM and H2OMAP SWMM

Nodes in InfoSWMM and H2OMAP SWMM

Or how the invert, rim elevation, crown elevation of the highest connecting link, pressure depth and flooded depth interact during a simulation.

Level (invert of the Node)

Elevation (crown – surcharged if the HGL is above the crown elevation)

Ground (either a depth above invert or a Rim Elevation)

Overflow is either lost, stored, increases the HGL, Inlet Controlled or flows to a 2D mesh depending on the values of Surcharge Depth, Ponded Area, Inlet Options or 2D Options, respectively

How to Make a New GeoDataBase in InfoSWMM or InfoSewer

How to Make a New GeoDataBase in InfoSWMM or InfoSewertwitpic.com/cs6iul
— RDickinson (@RDickinson) May 21, 2013

The detailed LID Modeling Report in InfoSWMM and H2OMap SWMM is made for the Show Detailed Output Command

>
The detailed LID Modelingt Report in InfoSWMM and H2OMap SWMM is made for the Show Detailed Output Commandtwitpic.com/crp3sh
— RDickinson (@RDickinson) May 19, 2013

Five Parameters beside the Maximum Time Step that help control simulation length in InfoSWMM and SWMM

Five Parameters beside the Maximum Time Step that help control simulation length in InfoSWMM and SWMM 5twitpic.com/crhplq
— RDickinson (@RDickinson) May 18, 2013

FYI, If you like twitter and like to center your embeded tweets add this to the custom twitter code How to center your embedded tweets class="twitter-tweet tw-align-center">

Four Key Parameters to Control Your Model, Time Step, Iterations, Time Step Lengthening and Hot Start File

Four Key Parameters to Control Your Model, Time Step, Iterations, Time Step Lengthening and Hot Start Filetwitpic.com/cpfht1
— RDickinson (@RDickinson) May 9, 2013

From 3QD - THE MATHEMATICS OF ROUGHNESS

THE MATHEMATICS OF ROUGHNESS

Jim Holt reviews Benoit B. Mandelbrot's The Fractalist: Memoir of a Scientific Maverick, in the NYRB:

Benoit Mandelbrot, the brilliant Polish-French-American mathematician who died in 2010, had a poet’s taste for complexity and strangeness. His genius for noticing deep links among far-flung phenomena led him to create a new branch of geometry, one that has deepened our understanding of both natural forms and patterns of human behavior. The key to it is a simple yet elusive idea, that of self-similarity.
To see what self-similarity means, consider a homely example: the cauliflower. Take a head of this vegetable and observe its form—the way it is composed of florets. Pull off one of those florets. What does it look like? It looks like a little head of cauliflower, with its own subflorets. Now pull off one of those subflorets. What does that look like? A still tinier cauliflower. If you continue this process—and you may soon need a magnifying glass—you’ll find that the smaller and smaller pieces all resemble the head you started with. The cauliflower is thus said to be self-similar. Each of its parts echoes the whole.
Other self-similar phenomena, each with its distinctive form, include clouds, coastlines, bolts of lightning, clusters of galaxies, the network of blood vessels in our bodies, and, quite possibly, the pattern of ups and downs in financial markets. The closer you look at a coastline, the more you find it is jagged, not smooth, and each jagged segment contains smaller, similarly jagged segments that can be described by Mandelbrot’s methods. Because of the essential roughness of self-similar forms, classical mathematics is ill-equipped to deal with them. Its methods, from the Greeks on down to the last century, have been better suited to smooth forms, like circles. (Note that a circle is not self-similar: if you cut it up into smaller and smaller segments, those segments become nearly straight.)
Only in the last few decades has a mathematics of roughness emerged, one that can get a grip on self-similarity and kindred matters like turbulence, noise, clustering, and chaos. And Mandelbrot was the prime mover behind it. 

Posted by Robin Varghese at 12:51 PM | Permalink 

SWMM5 Simple Model

Flooding Options in a SWMM 5 Manhole

Flooding Options in a SWMM 5 Manholetwitpic.com/cnfwcd
— RDickinson (@RDickinson) May 1, 2013

SWMM5 1000 Year Runoff Flow Duration Curve using SWMM 5 Statistics

SWMM5 1000 Year Runoff Flow Duration Curve using SWMM 5 Statistics twitpic.com/ck37uw
— RDickinson (@RDickinson) April 18, 2013

How to calculate the Maximum Unfilled Manhole Depth in InfoSewer

How to calculate the Maximum Unfilled Manhole Depth in InfoSewertwitpic.com/cif0zd
— RDickinson (@RDickinson) April 10, 2013

SWMM 5 Statistics for a 1000 year Simulation

SWMM 5 Statistics for a 1000 year Simulationtwitpic.com/cifasa
— RDickinson (@RDickinson) April 10, 2013

Mass Balance in SWMM 5

Mass Balance in SWMM 5twitpic.com/celztg
— RDickinson (@RDickinson) March 26, 2013

How to switch the upstream and downstream nodes in SWMM 5

How to switch the upstream and downstream nodes in SWMM 5 twitpic.com/choav7
— RDickinson (@RDickinson) April 7, 2013

Live Link between the HGL Plot in InfoSWMM and the DB Tables/ Attribute Browser

Live Link between the HGL Plot in InfoSWMM and the DB Tables/ Attribute Browser twitpic.com/cbygp8
— RDickinson (@RDickinson) March 17, 2013

Storage Nodes in InfoSWMM 2D

Storage Nodes in InfoSWMM 2Dyoutu.be/Jqk4YPMu3hY via @youtube

— RDickinson (@RDickinson) March 15, 2013