TELEMAC-2D openTELEMAC 9.1
openTELEMAC-2D 9.1.1, run with its default finite-volume settings.
Production software, installed from its official source and run by the suite with its defaults, except the settings each card names. Rank #1 on the leaderboard, OpenHydro rating 1128 (95 % interval 1035 to 1244) over 15 tests; median difference 0.049 %. Score cards from: openTELEMAC-2D v9.1.1, openTELEMAC-2D v9.1.1 at 10 m (spec alternative resolution).
| Test | Difference, rank | Checks |
|---|---|---|
| Gentle backwater in a channel A1F-001 | #5= 0.011 % off of 15 models | • Average depth error 0.1 mm off; · Water conserved 0.0035 % error |
| Dam break onto dry ground A1F-010 | #7 1.5 % off of 20 models | • Flood front 5.75 m behind exact; · Water conserved 0.00038 % error The front is 5.8 m behind the exact one and depths are within 1.4 mm on average. The error shrinks on finer grids at a rate of 0.69 (90 % range 0.64 to 0.73), below the scheme's design order of 1. The thin leading edge, 1 mm deep, lags further (39 m): it stays dry too long. HLLC and second-order settings did not change that. |
| Dam break into shallow water A1F-011 | #7= 0.22 % off of 20 models | • Average depth error 1.2 mm off; · Water conserved 0.00065 % error |
| Standing hydraulic jump A1F-020 | #1 0.049 % off of 9 models | • Depth profile 0.049 % off; · Jump stays put 0.046 % error |
| Calm flow over a hump A1F-040 | #5 0.047 % off of 12 models | • Average depth error 0.92 mm off; • Average flow error 0.000951 m²/s off |
| Flow speeding up over a hump A1F-041 | #6 0.39 % off of 12 models | • Average depth error 2.5 mm off; • Average flow error 0.000372 m²/s off |
| Hump with a hydraulic jump A1F-042 | #3 0.17 % off of 12 models | • Average depth error 0.37 mm off; • Average flow error 0.000305 m²/s off |
| Still lake around an island A1F-043 | #1= under 0.01 % off of 13 models | • Worst velocity error 0 m/s off; • Average depth error < 0.0001 mm off |
| Water sloshing in a bowl A2A-001 | #3= 0.15 % off of 9 models | • Average depth error 0.049 mm off; · Water conserved 0.00036 % error |
| Steady flow over a shaped bed A2A-010 | #5 0.015 % off of 12 models | • Average depth error 0.13 mm off; · Water conserved 0.0053 % error 0.13 mm from the exact water level, converging at first order. The inflow discharge and outlet level are listed in the order TELEMAC numbers its open boundaries. |
| Supercritical flow turned by a wall A2A-020 | #3= 0.83 % off of 4 models | • Average depth error 1 cm off; · Water conserved 0.15 % error Run with TELEMAC's HLLC scheme: its default kinetic scheme goes unstable with this supercritical inflow. The depth is right (1 cm) and converges, but the stored water is 0.15 % above exact, as with ANUGA (0.13 % below). |
| Flooding a cut-off pond A2C-EA1 | #3 0.56 % off of 10 models | • Pond level, point 1 1.4 mm off; • Pond level, point 2 1.4 mm off; • Peak level 0.00045 mm off |
| Filling floodplain hollows A2C-EA2 | #1= under 0.01 % off of 10 models | • Water conserved 0.0086 % off Run with a 1 s largest step, as for the other codes: with TELEMAC's step left to the 5-minute output interval, the dry start took long first steps that undersampled the inflow and lost 6 % of the water. |
| Flood spreading over a floodplain A2C-EA4 | #1= under 0.01 % off of 10 models | • Water conserved 0.00027 % off |
| Valley flooding A2C-EA5 | #6 0.034 % off of 10 models | • Water conserved 0.034 % off |