Saturday, July 4, 2020

Hidden features of the 1D St Venant solution for SWMM5, InfoSWMM, and ICM SWMM Networks

🌍 Deep Dive into InfoSWMM SA & Its Nuances 🌊

1/ 🚀 ArcEngine InfoSWMM SA: This variant of InfoSWMM, known as InfoSWMM SA, reveals some fascinating, often overlooked features of the 1D St Venant solution. This extends to software like SWMM5, InfoSWMM, and ICM SWMM Networks. Dive into SA's capabilities with these intriguing output graphs and reports! 🖼️ [Image]

2/ 💾 Software Compatibility: ArcEngine InfoSWMM SA 3.0 is built on ESRI's 10.7 version, while InfoSWMM is more adaptable, running on ArcMap versions ranging from 10.3 to 10.8. 🖼️ [Image]

3/ 🌐 ArcGIS ESRI Software Family: For those curious about how ArcMap fits into the broader ArcGIS ESRI suite, here's a tidbit: ArcMap specializes in 2D spatial data visualization and editing. For a deeper dive, check out ArcGIS Wikipedia. 🖼️ [Image]

4/ 💡 Flow Insights in SWMM5: The SWMM5 engine calculates the flow at the link's midpoint, relying on upstream and downstream hydraulic data. Outputs in this context span Flow, Depth, Capacity, and the Froude Number. 🖼️ [Image]

5/ 📊 Capacity Analysis: In SWMM5, while the flow is gauged at the link's midpoint, associated data like depth and capacity follow suit. Here, "Capacity" is derived from the middle cross-sectional area divided by the full flow area. 🖼️ [Image]

6/ 📈 Velocity in SWMM5: The velocity, a derived output in SWMM5, is calculated using the link's midpoint flow and the depth-related cross-sectional area. 🖼️ [Image]

7/ 🚦 Capacity vs. Surcharge d/D: While SWMM5 displays the capacity (area/full area), InfoSWMM further offers insights into the Surcharged d/D – essentially the average of upstream & downstream depths. A point to note: Capacity ranges between 0 and 1, but Surcharge d/D might exceed 1. 🖼️ [Image]

8/ 🌪 Flow Volume & Froude Number: Both are computed outputs in SWMM5. Notably, the Froude Number works in tandem with the Keep, Dampen, and Ignore parameters, influencing the non-linear term's inclusion/exclusion in the St Venant Equation solution. 🖼️ [Image]

9/ 🌊 Velocity Outputs in SWMM5: Besides the central flow output, SWMM5 provides computed outputs for upstream and downstream velocity, derived from the link's flow and the respective cross-sectional areas. 🖼️ [Image]

10/ 📜 Area in 1D St Venant Solution: This solution leverages upstream and downstream cross-sectional areas, extracted from the respective depths. These play a pivotal role in the solution's non-linear term. 🖼️ [Image]

11/ 📐 Upstream & Downstream Depths in SWMM5: These depths, pivotal in SWMM5, are based on node area rules and the corresponding node depths. Depth essentially is the node depth, but can differ if there are offsets, normal depth, or critical depth. 🖼️ [Image]

Stay curious, and keep exploring these water systems' intricacies! 💧🔍📘🎉

1/ There is also an ArcEngine version of InfoSWMM call InfoSWMM SA. I will SA to show some hidden features of the 1D St Venant solution for SWMM5, InfoSWMM, and ICM SWMM Networks by showing the output graphs and reports of SA


2/ ArcEngine InfoSWMM SA 3.0 uses the 10.7 version from ESRI. InfoSWMM on the other hand uses ArcMap 10.3 to 10.8

3/ In case you always wondered how ArcMap is related to other ArcGIS ESRI software you can read ===ArcMap, for viewing and editing spatial data in two dimensions and creating two-dimensional maps;

4/ There is only ONE Q or Flow in the middle of the link in the SWMM5 engine but it uses the upstream and downstream hydraulic information for the link. Output possible or used in SWMM5 in the middle of the link includes Flow, Depth, Capacity, Froude Number

5/ As a consequence of having the Flow computed in the middle of the link associated data such as depth and capacity is also in the middle of the link. Capacity is the middle cross-sectional area / the full flow area

6/ In SWMM5 the velocity is a computed output based on the Flow in the middle of the link and the depth-related cross-sectional area in the middle of the link

7/ SWMM5 shows the capacity or area / full area but in InfoSWMM you can also see the Surcharged d/D which is the average of the upstream and downstream depths. Capacity is between 0 and 1 but the Surcharge d/D can be greater than 1.

8/ Flow volume is SWMM5 is a computed output parameter as is the Froude Number but the Froude Number is used along with the Keep, Dampen and Ignore parameters to drop or not use the non-linear term in the St Venant Equation solution

9/ Other computed SWMM5 output can include the upstream and downstream velocity which is computed from the middle of the link Flow or Q and the upstream and downstream cross-sectional areas

10/ Used by the 1D St Venant solution is the upstream and downstream cross-sectional areas which are found from the upstream and downstream depths and used in the nonlinear term of the solution.

11/ The upstream and downstream depths for a link in SWMM5 is based on node area rules and the upstream and downstream node depths. The depth is the node depth unless there are offset and the normal depth or critical depth

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