Question regarding stochastic simulation and leakage about wntr HOT 4 CLOSED

Leaks are not compatible with the EpanetSimulator (EPANET models leaks using Emitters). I believe if you change EpanetSimulator to WNTRSimulator, the difference in pressures will be positive.

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Hello Katherine @kaklise ,
Thank you for the respond. I have tried the code with WNTRSimulator. There is an error when I ran the code:

.....anaconda3\lib\site-packages\wntr\sim\core.py:1299: UserWarning: Simulation did not converge at time 08:00:00. Reached maximum number of iterations: 2999
warnings.warn('Simulation did not converge at time ' + self._get_time() + '. ' + mesg)

Do you have any idea of the reasons this could happen and how to resolve that, please?
Thanks

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You can increase the number of iterations using sim.run_sim(solver_options={"MAXITER": 6000}), but this might indicate a larger issue. For example, if you created many leaks at critical pipes, the system might be able to solve. You should be able to look at simulation results up to the point where the system did not converge.

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Another couple of suggestions are below. These all stem from the same reasoning which is that large sudden changes to the hydraulics make convergence more difficult.

1. Try decreasing the hydraulic timestep
2. Try making each leak start at a different time
3. Try starting with a smaller leak area and increasing it over a small time frame (e.g., 10 minutes)

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