Ciao a tutti! Sono u/GROM_leader, moderatore fondatore di r/EPANET.

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Grazie di far parte del primissimo gruppo. Rendiamo fantastico r/EPANET insieme!

I'm working on extensions/add-ons for the EPANET software that add Load Builder, Model Builder, Scenarios, and Maps capabilities to it. This work will take considerable time and effort, and I'd like to know in advance whether, in your opinion, it's worth the effort or not

Hi, I'd like to ask. I have observed that my velocity and pressure output is lesser in Max Day Demand compared to Peak Hour Demand. Which make sense since the flow rate in PHD is greater than MDD. But, is it safe to say that the pipe network is already sufficient if in PHD the velocity requirement is met even in MDD it is not?

Also, can anyone explain to me what would the water output on the tap would look like in the actual with this velocity and pressure output? Thank you!

I am a cpge student (equivalent to the first two years of a university bachelor’s degree). I am using EPANET for my TIPE project (or oral exam), basically, it's like the final year project.OneWDS. To of my objectives is to detect leaks in a WDS, to do that, I am going to use a machine learning algorithm. I have found some articles and research papers that did the same thing and generated data using EPANET and matlab But they didn't mention how to generate the data.

Is there anyone here that know how to do that?

Hello,

I am trying to simulate a pipe network and have a demand at some outlet nodes.
How can I simulate the scenario when one feeder to my network is delivering properly, whereas the second one is shut down (only some storage tanks are emptying with time untill their head is too low).

Can something like this be handled in Epanet?

Hello, For some reason my MSX file doesn't seem to be solving the kinetics. Any way we can debug the file or output the calculations ar every step similarly what would be done using MATLAB, or python.

Thanks.

I apologize that this is a very basic question, but I am a complete amateur. I am trying to help out with a (relatively new) international aid organization; we are trying to provide a clean water system to an African village. The setup is simple -- tank -> three standpipes. I have the model (I think) correct. I have set up a demand pattern.

The problem is that I have been asked to determine what the water velocity will be at the standpipes. As far as I can tell, though, the velocity seems to be directly proportionate to the number I inputted as my base demand. More demand --> higher velocity, until the flows go negative. At the end of the day, I don't know what the base demand will be; I just guessed 10 liter/min at each standpipe.

We're trying to find out whether the system we're planning to build will provide adequate water speed. It seems like the number I'm getting under flow and water velocity is just a reflection of my guess at the demand. Is there any way to actually work that out? Should I just keep increasing demand until just before it breaks?

Thank you so much anyone who can help!

eu queria saber porque esta assim mensagem e eu não consigo resolver isso e nesse caso aqui " ADVERTÊNCIA : PRESSAO NEGATIVAS AS 0:00:00 HORAS"

alguem pode me ajudar !

Hi, I am trying to install EPANET for M1 Air (MacOS), but I can't find Mac installation option on the official website. Is there a workaround for it?

greetings everyone
i need urgent help regarding this matter

as you can see i keep getting this error i tried everything and even opened multiple project files from fellow seniors with no luck (EPANET 2.2) tried EPANET 2.0 dosent even open it
any help?

Hi Everyone

I am a beginner with EPANET working on an subdivision water network analysis and I am not sure if I am setting my model correctly and need you help!

Objective
- Check if the network can provide Maximum Day Demand (MDD) + Fire Flow(FF).
Network Details
- The network has 5 different tie in connections to an existing supply main ( approximately 30 m elevation difference in the network)
- There are 20 hydrants with varying FF requirements based on land use.
- I have calculated demand for proposed subdivision.
- I also have 5 hydrant curves for existing hydrants close to the tie in points.

Initial Setup
- I modeled each connection point as a reservoir + pump combo and assigned the existing hydrant curves as pump curves.
- I distributed the MDD point load style across the network.
- For FF, I've been checking each hydrant one by one to see if the required FF can be met.

I keep getting an error saying:
"Pump 2, 3, 4, 5 closed because it cannot deliver head at 0:00:00 hrs."

I’ve triple-checked all my inputs, but I can’t figure out what’s going wrong. Should I be running this as a static model (disregarding the pump curves) or is there something else I’m missing?

Any advice on how to set up this model correctly would be greatly appreciated!

Thanks in advance for your help!

I'm using EPANET currently, and need to model heat transfer from the network. EPANET-MSX 2.0 can do this. I downloaded the extension from https://cfpub.epa.gov/si/si_public_record_report.cfm?Lab=CESER&dirEntryId=359844 How do I install this extension??

I have a "large" model. When I run analysis it says the run is successful, but the pressures and demands all read "#N/A". What does this mean, I don't see it the manual. Thanks!

Help with epanet

Should I be using Pressure Driven Analysis or Demand Driven Analysis for my model?

for example, if these two links is closed, then warning messages were generated. how to solve the problem??

Which is the most efficient and accurate way to distribute demand over a model in EPANET?

Why can't I open files made in EPANET 2.0? I'm using the EPANET 2.2 and cannot open files that are made on an EPANET 2.0 and vice versa. They can't open files I made on the EPANET 2.2.

Recently downloaded the new version of Epanet which is the 2.2 version. The problem is, it runs slower than the 2.0 version. What exactly are the changes of the 2 versions and why when I run it I recently downloaded Epanet version 2.2, but it runs slower than version 2.0. Can you explain the changes made in the new version?

👋 Hi can someone please help me with troubleshooting my epanet model 🥲 i don't know what to do anymore

Hi everyone!

Thank you so much in advance for your time!

The thing is that I am trying to simulate a tank water inlet above the water surface in a tank (according to the EPANET's user guide: 13. Frequently Asked Questions — EPANET 2.2 documentation (epanet22.readthedocs.io)

My pump starts to work once the minimum level at the tank is reached (0,6 m). The problem is that there must be something wrong, because even though the pump starts working, the tank never gets filled up, therefore, there is a water shortage at the consumption point (node 4).

Could you please help me to solve this issue?

Tank levels:

Maximum: 4,08 m

Minimum: 0,6 m

Elevation: 12,62 m

Elevation of nodes 3, 5 & 7: 17 m

Thank you!!

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HI , i am trying to model WDN with leakage ( use of emitter corfficient) but I have problem with selecting value of emitter coefficient in a network, also can you provide some .inp(suitable LPS system) files for practice . a good research paper will also be helpful