SWMM5 - Stormwater Management Model
SWMM 5, InfoSWMM, H20MAP SWMM, InfoSewer for Water Quality,Hydrology, Hydraulics
Top Content
Latest Activity
Robert Dickinson commented on Robert Dickinson's group 'ExtraVariables'
QA/QC version based on v22 of EPA SWMM 5 with the ability to read older SWMM 5 OUT files.
swmm5.dll
Epaswmm5.exe
Robert Dickinson commented on Robert Dickinson's group 'Stream of Information'
Video: How Snowflakes Are Formed
February 4th, 2012 | Posted by Jaime Menchén in Science Videos
This time-lapse video lasts 11 seconds, with no music or voice-over. And still you’ll want to see it over and over again. The…
Photo posted by Robert Dickinson
This is a galaxy
This is a galaxy. Or is it? A remix of material originally produced for BBC Stargazing Live 2012 If you liked this video, follow me on twitter to hear about ...
Video posted by Robert Dickinson
Fateme Fallah replied to Fateme Fallah's discussion 'Uncertainty Analysis'
Dear Lionel,
This matter is explained in Appendix D of SWMM manual under the title of “Command line SWMM”. So in MATLAB you can use below format under DOS window:
"The address of place that SWMM is there" input…
Robert Dickinson commented on Robert Dickinson's group 'Stream of Information'
Now the new images, courtesy of the Suomi NPP satellite (2012):
The above two photos are pretty much what you would see with your naked eyes if you were at the altitude of this satellite. It's humbling to realize that all you…
Lionel replied to Lionel's discussion 'Linking Matlab with SWMM5'
Thanks Robert for your prompt help!
Lionel replied to Fateme Fallah's discussion 'Uncertainty Analysis'
Hi Fateme Fallah,
I am doing something similar but in my case I am varying the infiltration factor. I am not very good with Matlab so require a bit of help on the coding. I would like to check if you have been successful in your attempt to…
Robert Dickinson replied to Lionel's discussion 'Linking Matlab with SWMM5'
Hi, This thread has some info
http://www.swmm2000.com/forum/topics/uncertainty-analysis
as does this
http://www.swmm2000.com/forum/topics/link-swmm-with-matlab
http://www.swmm2000.com/forum/topics/combining-swmm-and-matlab
Linking Matlab with SWMM5
Hi, I am currently trying to use Matlab to create a set of random values and inputting these random values into SWMM 5 to vary the different parameters (e.g. decay constant) so I will get a range of results. Has anyone done it before? Thanks!See More
Discussion posted by Lionel
North Carolina City Chooses InfoSewer
North Carolina City Chooses InfoSewerArcGIS Based Sewer Modeling Package Helps Hendersonville, NC Model and Manage Its Collection SystemBroomfield, Colorado, USA, January 31, 2012Innovyze, a leading global innovator of business analytics software and technologies for wet infrastructure, today announced the City of Hendersonville, North Carolina, has selected InfoSewer for ArcGIS (Esri, Redlands, CA) as its sewer modeling platform.InfoSewer has helped define the standard in the industry for…See More
A blog post by Robert Dickinson was featured
North Carolina City Chooses InfoSewer
North Carolina City Chooses InfoSewerArcGIS Based Sewer Modeling Package Helps Hendersonville, NC Model and Manage Its Collection SystemBroomfield, Colorado, USA, January 31, 2012Innovyze, a leading global innovator of business analytics software and technologies for wet infrastructure, today announced the City of Hendersonville, North Carolina, has selected InfoSewer for ArcGIS (Esri, Redlands, CA) as its sewer modeling platform.InfoSewer has helped define the standard in the industry for…See More
Blog post by Robert Dickinson
Robert Dickinson left a comment for oliver kemp
Welcome Oliver!
Node Convergence in SWMM 5
- Rating:
5 after 1 vote
The solution is iterative but each iteration is dependent on the CFL or explicit time step. The time step we select is based on the CFL condition but instead of just using the explicit solution we iterate until the node depths are converged or a maximum of 4 iterations is reached.
The solution of node depths and link flows in SWMM 5 is an iterative process but the number of iterations for the flows and links depends on how fast the node depth converges. The node continuity equation is ALWAYS solved at each iteration for each node but depending on whether both the link upstream and downstream node depths have converged the number of iterations for a link may be between 2 and 4. The minimum number of iterations for a link is 2.
where, H = the depth in the node and
n = the current iteration.
The internal units of SWMM 5 are American Standard Units so the units of 0.005 are feet.
 |
| Figure 1. Iterations in SWMM 5 |
![Reblog this post [with Zemanta]](http://img.zemanta.com/reblog_e.png?x-id=fb7a9b39-cf59-4a9e-89df-c62f866b47ba)
Comment
© 2012 Created by Robert Dickinson.
Powered by 
.
You need to be a member of SWMM5 - Stormwater Management Model to add comments!
Join SWMM5 - Stormwater Management Model