EPA SWMM 5.2.4 dynamic wave
EPA SWMM 5.2.4 with dynamic-wave routing; on the channel tests, the channel is written as one conduit per grid cell.
Production software, installed from its official source and run by the suite with its defaults, except the settings each card names. Rank #4 on the leaderboard, OpenHydro rating 880 (95 % interval 700 to 1040) over 13 tests; median difference 0.33 %. Score cards from: EPA SWMM 5.2.4.
| Test | Difference, rank | Checks |
|---|---|---|
| Sewer pipes running part full A1D-001 | #2= 0.027 % off of 5 models | • Worst depth error 0.27 mm off; • Typical flow error < 0.0001 % off |
| Sewer pipes running full A1D-002 | #2= 0.034 % off of 5 models | • Worst depth error 0.4 mm off; • Typical flow error < 0.0001 % off |
| Tank emptying through an outlet A1D-003 | #3= 0.33 % off of 5 models | • Worst depth error 1.4 mm off; • Worst flow error < 0.0001 m³/s off |
| Pump working on its curve A1D-004 | #1= under 0.01 % off of 5 models | • Worst depth error < 0.0001 mm off; • Worst flow error < 0.0001 m³/s off |
| Backwater up a sewer A1D-005 | #1= 0.025 % off of 5 models | • Worst depth error 0.3 mm off; • Typical flow error < 0.0001 % off |
| Gentle backwater in a channel A1F-001 | #1= under 0.01 % off of 15 models | • Average depth error 0.022 mm off; · Water conserved 0.002 % error |
| Dam break onto dry ground A1F-010 | #9= 11 % off of 20 models | • Flood front 41.2 m behind exact; · Water conserved 0.036 % error SWMM's dynamic-wave routing is built for sewer networks, not dam breaks: the front is 41 m behind and the error does not shrink on finer grids. One conduit near x = 1,126 m also spikes to a 9 m depth at the reporting time (the chart clips it); that is the engine's own output, not a plotting fault. |
| Dam break into shallow water A1F-011 | #17= 6.7 % off of 20 models | • Average depth error 3.7 cm off; · Water conserved 4.1 % error The bore smears and lags, and the stored water drifts 4 % above the exact volume: dynamic-wave routing is not built for moving shocks. |
| Standing hydraulic jump A1F-020 | #7= 102 % off of 9 models | • Depth profile 102 % off; · Jump stays put 29 % error |
| Calm flow over a hump A1F-040 | #9= 174 % off of 12 models | • Average depth error 1.45 m off; • Average flow error 7.71 m²/s off |
| Flow speeding up over a hump A1F-041 | #11= 189 % off of 12 models | • Average depth error 56 cm off; • Average flow error 2.89 m²/s off |
| Hump with a hydraulic jump A1F-042 | #11= 322 % off of 12 models | • Average depth error 29 cm off; • Average flow error 0.579 m²/s off |
| Still lake around an island A1F-043 | #8= 0.047 % off of 13 models | • Worst velocity error 0.00047 m/s off; • Average depth error 0.012 mm off |
| Real sewer network, Odense A1F-100 | #1= 30 % off of 3 models | · Fit to measurements NSE -0.488; • Peak level 30 cm off |