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OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
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explicit solver
conduit shapes
Continuity Error
Convergence NOT Achieved
Converging
error message
GVF Rational Solver
HGL Issues
hydraulic reviewer
Implicit Solver
Instability
Manhole
manholes
overflow
Profile
SewerGEMS
surcharge depth
SWMM solver
swmmm
swwm
swwm controles
Problem using SewerGems Explicit SWWM Solver - culvert inlet coefficient
Vitor Chaves
Hello I am trying to run a hydraulic model with explicit calculation solver However, the model does not run because of the following error "culvert inlet coefficient assigned to this conduit has a swwm culvert code which only applies to culvert…
2 months ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
Highest Continuity error in POS
Nishadi
Hello, My drainage network simulated in Sewergems Explicit solver is consist with Ponds and POS. I'm getting not converging %, more than 5%. It gives unstable flow results. When I check the report summary, it shows higher continuity error in POS. Is…
3 months ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
Results instability- Explicit Solver
Nishadi
Hello, I'm simulating a storm network in sewergems platform. My network is connecting with a pond and the variation of HGL of the pond and the U/S node of the incoming channel is shown below. I'm using explicit solver, with 6 sec routing time step…
Answered
4 months ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
Explicit Solver limitations
Nishadi
Hello, I am simulating a stormwater network (in sewergems) where I have channels, conduits, manholes, Ponds (3 nos), POS, Pumps. I can not simulate this in Implicit solver (as it takes hours and giving unstable results). When I simulate in Explicit…
Answered
4 months ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
Rectify issue in Explicit Solver
Nishadi
Hello, I'm simulating a drainage network in SewerGEMS. The network consist with open channels, closed conduits, pond, pump, POS(no control structure). when I simulate the model in Explicit and implicit solvers, I'm getting two different profiles as…
6 months ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
SWMM Control
Nishadi
Hello, I'm simulating a stormwater network where I have a pond. in the pond outlet channel I need to introduce a stop control structure and assign a orifice gate where I can open/close it with SWWM control set using pond water level. My issue is …
7 months ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
Simulating in Explicit Solver
Nishadi
Hello, I'm simulating my model in explicit solver and I have set the SWMM output increment to 0.1 hr. Then when I go for profile simulation, always my profile start with 0.1 hr. Is it possible to change it to Zero? BR Nishadi
9 months ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
Depth (Surcharged) of Manholes using Explicit SWMM Solver
Maria Blake
Using SewerGEMS Connect Edition 10.02.04.53 For manholes, I am wondering how the software calculates the area/volume of water that is stored over the rim elevation corresponding to the surcharge depth. For example, below is a manhole that has…
over 1 year ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
Implicit solver for Open channel network
Nishadi
Hello, I'm simulating a stormwater model in sewergems platform. the network is simulating as open channel flow. further, network is bit complex with several tributaries with several sections (unlined trapezoidal, RCU rectangular drains, box culvert…
Answered
over 1 year ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
Zero overflow volume in manholes that show True in the "is ever overflowing"?
Ana Maria Jaramillo Sarmiento
SewerGEMS: Why I have zero overflow volume (Hydraulic Reviewer manhole table) in manholes that show "True" in the "Is ever overflowing" field? I'm using the explicit SWMM solver and I don't have bolted covers. Thank you very much.
over 1 year ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
SewerGEMS High Continuity Error during specific storm that causes flooding of catch basins
Joshua Hesting
Hello, I have a SewerGEMS model set up to review 2, 10, 100, and 2500 year storm scenario's. For this model, the explicit solver achieved much better convergence and continuity error results for the 2, 10, and 100 year storms. However, I am seeing very…
over 2 years ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
SewerGEMS Explicit Solver Time Step Critical Elements
Joshua Hesting
Can someone explain to me what the "Time Step Critical Elements" are when running a SewerGEMS Model with the explicit solver? After a model run when looking through the summary report, there is a section titled "Time Step Critical Elements". My model…
Answered
over 2 years ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
SewerGEMS Explicit Solver "The crown of the link adjacent to the Start Node is above the top of the node"
Joshua Hesting
I cannot for the life of me get this warning to disappear from my model. If someone could take a look at the node that is causing an error that would be great. The model contains a double barrel arch CMP pipe as an outlet structure for a pond. The pond…
over 2 years ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
why there's implicit and explicit solver?
nei lounis
hi guys hope you're doing fine am just curious about : why there is an explicit and implicit solver? isn't the implicit is the best one what ever ? why modified rational method wont run on explicit ? and work on implicit and thank you coardially…
over 4 years ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
RE: SURCHARGE NETWORK
MPachlhofer
Daniel, We have a wiki article that explains the difference between the StormCAD solver (GVF Rational engine) and the CivilStorm solver (Implicit or SWMM dynamic engine) that will help explain when to use each solver for the results that you're looking…
over 7 years ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
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