ANUGA 4.0.1
ANUGA 4.0.1 (Geoscience Australia / ANU), default settings on a triangular mesh.
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 1219 (95 % interval 1047 to 1402) over 15 tests; median difference 0.11 %. Score cards from: ANUGA 4.0.1, ANUGA 4.0.1 at 10 m (spec alternative resolution).
| Test | Difference, rank | Checks |
|---|---|---|
| Gentle backwater in a channel A1F-001 | #13 0.062 % off of 15 models | • Average depth error 0.57 mm off; · Water conserved 0.013 % error |
| Dam break onto dry ground A1F-010 | #2= 0.55 % off of 20 models | • Flood front 2.09 m behind exact; · Water conserved 0.041 % error |
| Dam break into shallow water A1F-011 | #3 0.07 % off of 20 models | • Average depth error 0.39 mm off; · Water conserved 0.047 % error |
| Standing hydraulic jump A1F-020 | #4 0.28 % off of 9 models | • Depth profile 0.28 % off; · Jump stays put 0.28 % error |
| Calm flow over a hump A1F-040 | #6 0.12 % off of 12 models | • Average depth error 0.94 mm off; • Average flow error 0.00516 m²/s off |
| Flow speeding up over a hump A1F-041 | #2 0.11 % off of 12 models | • Average depth error 0.68 mm off; • Average flow error 0.00153 m²/s off Within 0.7 mm with the SWASHES downstream condition (0.66 m held while the outflow is subcritical); three grids leave its convergence rate's range wide (0.69 to 1.14). With a free (transmissive) outflow instead, ANUGA settled on a fully subcritical state 1.06 m deep, 0.39 m off. |
| Hump with a hydraulic jump A1F-042 | #2 0.11 % off of 12 models | • Average depth error 0.25 mm off; • Average flow error 0.0002 m²/s off |
| Still lake around an island A1F-043 | #11 0.078 % off of 13 models | • Worst velocity error < 0.0001 m/s off; • Average depth error 0.067 mm off Nothing moves (velocities 1e-14 m/s). The worst depth difference, 1.7 mm, is in the cells cut by the shoreline, where a cell-mean depth on the sloping bump differs from the exact depth at the cell centre; that check is informational. |
| Water sloshing in a bowl A2A-001 | #2 0.11 % off of 9 models | • Average depth error 0.036 mm off; · Water conserved 0.012 % error |
| Steady flow over a shaped bed A2A-010 | #7= 0.02 % off of 12 models | • Average depth error 0.18 mm off; · Water conserved 0.018 % error |
| Supercritical flow turned by a wall A2A-020 | #1 0.25 % off of 4 models | • Average depth error 3.1 mm off; · Water conserved 0.13 % error |
| Flooding a cut-off pond A2C-EA1 | #5= 1.9 % off of 10 models | • Pond level, point 1 4.8 mm off; • Pond level, point 2 4.8 mm off; • Peak level 0.0049 mm off |
| Filling floodplain hollows A2C-EA2 | #1= under 0.01 % off of 10 models | • Water conserved < 0.0001 % off |
| Flood spreading over a floodplain A2C-EA4 | #1= under 0.01 % off of 10 models | • Water conserved < 0.0001 % off |
| Valley flooding A2C-EA5 | #1= under 0.01 % off of 10 models | • Water conserved < 0.0001 % off |