I have face with a strange problem in SWMM. I constructed two models with exactly the same properties. one with SWMM 5.0.13 and the othe with SWMM 5.0.021
but max/ full depth in conduit are not the same. I have attached these two file.But I do not kno
Hi:
I am wodering how the HRT is being calculated in the treatment expression (e.g. C= NH4*exp(-0.004*HRT).
Thanks!
Read more…Hi,
I have modeled 4 reservoirs for the purpose of controlling peak flow. The total depth of flow in reservoirs decrease in approximately 24 hours. I expected that after modeling reservoir, lag time happen for the time to peak. But unfortunately the o
Hi,
Is there any of you who tried to make longer continuous analyses with SWMM, for example analyse how the flow change over a year?
If so, what type of input have you used, and was there any particular problems which arose?
I need to do such an analy
Read more…Hi,
I have linked SWMM 5.0 with an optimization module and using C++.
I wanted to print some results from the simulation to an external text file.
I've used the following codes, however, I can't get the results printed. Instead of that I am just gett
Read more…Anyone know why I am getting the following (attached) rpt file containing ERROR 173, for the attached input file?
ERROR 173: Time Series TSS1 has its data out of sequence at JAN-01-2010 00:45:30.
Read more…Hi everybody
I have question about junction in SWMM
If I have different type of inlet (different type of manhole cover or street inlet),
how can i define them in SWMM?
Thank you very much
Rawit
Read more…| OCT 26, 2011 | |
Heavy monsoon rains have been drenching Southeast Asia since mid-July, causing mudslides and widespread flooding. The deluge has now reached Bangkok, with rising water and associated problems affecting
Hi,
Does anyone know, why we can't use a "Cutoff Divider" in dynamic wave routing condition?
Regards,
Upaka
Read more…Do you know if SWMM5 has a parallel pump tool like the Water does? Do we have to draw in the lag pump or is there a button we can asign it to the lead pump?
Read more…Hello everybody
I want to examine uncertainty of rainfall duration with the monte carlo method. So I should link SWMM with MATLAB program and run the program many times (here 1000 times). In each iteration I should change the duration of rainfall and
Read more…Hi,
I want to include a variable to the orifice height of my network and I tried to implement this through the source codes of SWMM 5.0. I am looking a particular function to do this.
Please look at the following example.
Hi,
This is about the control rules.
I am trying to simulate a network with the help of control rules.
Total simulation period is 2 hrs and 30 minutes, however, I'm running the simulation part by part. Eg 0 to 15 minutes, 15 to 30 minutes, 30 to 45 minu
Read more…Hi,
I am currently using SWMM 5 to model the Upper Bukit Timah catchment in Singapore for my master thesis. I have already tested several events of precipitation to model the flow on the outfall node. The results were reasonable, the modeled flow was
Hi everybody.
I want to know how SWMM cosider time of concetration & lag time.
I think that SWMM calculate the peak of runoff for each subcatchment & the total runoff is the algebric sum of each subcatchment not the sum of hydrographs.
Is it correct?
Tha
Read more…Hello Bob
I'm trying to convert to metric a WQ example file you posted in Feb 2009 (RUNOFF43_SW5.INP). The problem seems to be in the factor C1 of the EXP function used to describe the Wash-off process. I get a relatively close match (in the magnitud
Hello - I am trying to run SWMM5 (V21) from the command line but the model is not running as expected. Upon command line execution, the SWMM GUI opens up and the command prompt opens displaying...
C:\swmmbat>epaswmm5.exe iter1.inp report.rpt output.o
Read more…Lid Controls in SWMM 5.0.022
The ability to model Low Impact Development (LID) is a new feature created by the EPA in SWMM 5.0.022. This discussion will list various features in LID modeling.
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