LISFLOOD-FP 8.3 · ACC
LISFLOOD-FP 8.3, the local-inertia solver it is best known for; it leaves out the advection term.
Production software, installed from its official source and run by the suite with its defaults, except the settings each card names. Rank #2 on the leaderboard, OpenHydro rating 987 (95 % interval 843 to 1108) over 13 tests; median difference 0.42 %. Score cards from: LISFLOOD-FP 8.3 ACC.
| Test | Difference, rank | Checks |
|---|---|---|
| Gentle backwater in a channel A1F-001 | #14= 0.085 % off of 15 models | • Average depth error 0.77 mm off; · Water conserved 0.065 % error |
| Dam break onto dry ground A1F-010 | #14= 28 % off of 20 models | • Flood front 105 m behind exact; · Water conserved 0.53 % error The local-inertia scheme leaves out the advection term, so it is not expected to get a dam break right; it is shown because it is what most LISFLOOD-FP users run. |
| Dam break into shallow water A1F-011 | #14= 3.2 % off of 20 models | • Average depth error 1.7 cm off; · Water conserved 0.011 % error The local-inertia scheme leaves out the advection term, so it cannot form the right bore; it is shown because it is what most LISFLOOD-FP users run. |
| Calm flow over a hump A1F-040 | #8 64 % off of 12 models | • Average depth error 67 cm off; • Average flow error 2.82 m²/s off |
| Flow speeding up over a hump A1F-041 | #7= 50 % off of 12 models | • Average depth error 32 cm off; • Average flow error 0.585 m²/s off |
| Hump with a hydraulic jump A1F-042 | #8 61 % off of 12 models | • Average depth error 8.5 cm off; • Average flow error 0.11 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 | #8 0.42 % off of 9 models | • Average depth error 0.14 mm off; · Water conserved < 0.0001 % error |
| Steady flow over a shaped bed A2A-010 | #10= 0.082 % off of 12 models | • Average depth error 0.74 mm off; · Water conserved 0.056 % error |
| Flooding a cut-off pond A2C-EA1 | #5= 2.1 % off of 10 models | • Pond level, point 1 5.3 mm off; • Pond level, point 2 5.3 mm off; • Peak level 0.091 mm off The pond settles 5 mm above the sill. The stored volume is 2.7 % above the figure integrated on the EA's 2 m DEM; that check does not gate, because a 10 m grid samples the ground differently. |
| 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 |