Innovyze St Venant Solutions for InfoSewer, H20Map Sewer, #InfoSWMM, H2OMap SWMM and #InfoWorks_ICM and #InfoWorks_ICM_SE

This blog contrasts the St Venant Solutions for InfoSewerH20Map Sewer (1), InfoSWMM/H2OMap SWMM and ICM/ICM SE.

1.  Assumptions for the St. Venant Equations

The assumptions behind Lumped and Distributed Models along with the assumptions of the St Venant equations.  InfoSewerH20Map Sewer, InfoSWMM, H2OMap SWMM, SWMM5, ICM and ICM SE are all Distributed models for Unsteady flow.  InfoSWMM and InfoSewerH20Map Sewer have options for direct steady flow.  ICM and InfoSWMM can also use a quasi steady flow solution.   All of these Innovyze models use the Continuity Equation and Momentum equation for routing flows in links.  The numerical solution differs between the three Innovyze main  platforms:

• InfoSewer and H2OMap Sewer
• InfoSWMM,  H2OMap SWMM and SWMM 5
• ICM and ICM SE

Continuity Equation

Various Forms of the Momentum Equation

2.  Muskingum-Cunge for InfoSewerH20Map Sewer

The continuity (mass conservation) equation is:

where

x          =          distance along the pipe (longitudinal direction of sewer)

A          =          flow cross sectional area normal to x

y          =          coordinate direction normal to x on a vertical plane

d          =          depth of flow of the cross section, measured along y direction

Q         =          discharge through A

V          =          cross sectional average velocity along x direction

S0         =          pipe slope, equal to sin θ

θ          =          angle between sewer bottom and horizontal plane

Sf            =          friction slope

g             =          gravitational acceleration

t           =          time

β          =          Boussinesq momentum flux correction coefficient for velocity distribution

3. SWMM5, H2OMap SWMM and InfoSWMM

 

4. ICM and ICM SE

5. A common look at the Equations for ICM, ICM  SE. InfoSWMM and H2OMap SWMM

ICM 2D and InfoSWMM 2D Equations

ICM 2D and InfoSWMM share the same computational engine as described on the Innovyze Blog

As the scheme is an explicit solution it does not require iteration to achieve stability within defined tolerances like the ICM 1D scheme or the iterative solution in InfoSWMM.  Instead, for each element, the required timestep is calculated using the Courant-Friedrichs-Lewy condition in order to achieve stability, where the Courant-Friedrichs-Lewy condition is

How to Make an InfoSewer or H2OMap Sewer Model from SWMM5

"Discover the seamless integration capabilities within Innovyze's suite of software at www.innovyze.com 🌐. Our versatile platforms offer robust import and export functions, ensuring you can effortlessly move model data across various applications. Each tool supports universal formats like CSV and shapefiles 🔄.

Here's how you can capitalize on these features for a SWMM 5 model in H2OMap Sewer or InfoSewer:

1️⃣ Manhole - Import detailed manhole data to maintain network integrity. 2️⃣ Pipe - Ensure accurate pipe flow simulations by transferring essential data. 3️⃣ Outfall - Model outfall conditions with precision. 4️⃣ Pump - Integrate pump operations seamlessly into your network. 5️⃣ Wet Wells - Manage wet well data for comprehensive modeling. 6️⃣ DWF Values - Directly copy to the Other Loading DB Table for accurate dry weather flow representation. 7️⃣ DWF Patterns - Replicate demand patterns by pasting into Pattern Tables.

Elevate your water management projects with Innovyze's interoperable solutions that bridge the gap between SWMM 5 and H2OMap Sewer or InfoSewer 💧🔗🛠️."

H20Map Sewer GUI and Import Manager

Reasons to use the Advanced Force Main Network Support Option in InfoSewer and H20Map Sewer

See the image for the two main reasons but another reason is that you get a better continuity error with this new(er) feature or option in InfoSewer

A Simple Advanced Model in InfoSewer

How to Make a Small Model out of a Large Model in H2OMAP Sewer

Subject: How to Make a Small Model out of a Large Model in H2OMAP Sewer

How to Make a Small Model out of a Large Model in H2OMAP Sewer and InfoSewer by dickinsonre Subject:  How to Make a Small Model out of a Large Model in H2OMAP Sewer The process is easy if you use Domain and Facilities.   Step 1.  Use the Trace Upstream Network Command in Utilities to find the upstream network from your node of interest.  The upstream network is saved to a Domain. Step 2.  Use the Facility Manager to 1st deactivate the whole network and then 2nd to add the Domain to your Facility or the nodes and links that you will simulate You now have a smaller network to examine in Detail.  You may have to make a temporary Outfall node to run the model if there are no Outfalls in the model. via Blogger http://www.swmm5.net/2013/08/how-to-make-small-model-out-of-large.html

InfoSewer - Minimum Travel Distance

Note:   The minimum travel distance in an InfoSewer or H2OMap Sewer model can be related to the mean link length in the Pipe DB Table.  Here is a table of the Mass balance check for one network versus the minimum travel distance in feet for the default values of network accuracy, minimum time length and maximum number of segments at a report time step of 1 hour.   As you can see making the Minimum Travel equal to the mode of the length histogram yields the best results even for the default model parameters.

Minimum Travel Distance	Mass Balance Check:	Label
1	10.50	(%)
5	3.25	(%)
10	6.25	(%)
20	17.34	(%)
25	7.05	(%)
30	1.38	(%)
40	1.07	(%)
50	1.07	(%)
55	1.05	(%)
58	3.87	(%)
60	3.34	(%)
75	0.55	(%)
80	3.09	(%)
90	11.60	(%)
100	17.20	(%)
200	17.34	(%)
1000	17.34	(%)

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