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Which version of the EPA SWMM numerical solver is used by SewerGEMS and CivilStorm, when the active solver is set to "Explicit" in the calculation options?
The SWMM solver version number used can be found by computing a model while using the Explicit SWMM solver. In V8i SELECTseries 5 and earlier, a text file will appear with the SWMM version number listed at the top.
Starting with the CONNECT Edition of SewerGEMS and CivilStorm, the solver version can be seen in the SWMM output file, saved when saving the model.
You can also refer to the below chart.
Note: future versions of the program may offer the ability to turn on or off the "Bentley Enhanced" improvements that are included on top of the respective base SWMM solver version. as well as the possibility of selecting specific legacy SWMM solver versions. Enhancement # 136686
Bentley Hydraulic and Hydrology Product
EPA SWMM Version
SewerGEMS/CivilStorm CONNECT Edition (10.00.00.40)
5.1.010
SewerGEMS/CivilStorm V8i SELECTseries 5 (08.11.05.113)
5.1.007
SewerGEMS/CivilStorm V8i SELECTseries 5 (08.11.05.58)
SewerGEMS/CivilStorm V8i SELECTseries 4 (08.11.04.54)
5.0.022
SewerGEMS/CivilStorm V8i SELECTseries 3 (08.11.03.84)
SewerGEMS V8i SELECTseries 2 (08.11.02.46 and 08.11.02.49)
5.0.018
CivilStorm V8i SELECTseries 2 (08.11.02.62 and 08.11.02.65)
SewerGEMS (08.09.26.14 and 08.09.26.17)
5.0.011
CivilStorm (08.09.26.14 and 08.09.26.17)
The EPA-SWMM solver included with SewerGEMS and CivilStorm is a "Bentley Enhanced" version, which means Bentley has added functionality so that it more seamlessly integrates with the SewerGEMS/CivilStorm data model and with other Storm-Sewer Products.
It is important to note that as of the initial CONNECT Edition release of SewerGEMS and CivilStorm, the core SWMM hydraulic solver has not been modified by Bentley - it has simply been "enhanced" to provide more results. Details below:
1. HEC-22 Inlet Calculations 2. Ability to compute complex pond outlet structures 3. Headloss Calculations at structures including HEC-22 and Standard Headloss methods 4. Additional detailed results 5. Integrated LID results 6. Tractive Stress Calculations 7. Hydrogen Sulfide Modelling
Troubleshooting unstable SewerGEMS and CivilStorm model results using the Explicit SWMM Solver