Machine of ancient origin, still employed on the river Eisach, in…
Machine of ancient origin, still employed on the river Eisach, in the Tyrol, for raising water. A current keeping the wheel in motion, the pots on its periphery are successively immersed, filled, and emptied into a trough above the stream.
Only the input is driven; every other part of this model moves by physics (MuJoCo), and its ratios are measured. Run it live, change its parameters, or switch the friction off to see the output stop.
- Modelled as
- Seen from the side: a wheel on a fixed axle with 10 open pots fixed at its rim (mouths tilted 30 degrees inward), turned by a river running under it (particle water drawn as its smoothed surface, fed upstream and leaving downstream off the picture). Each pot is dipped and filled at the bottom, rises mouth-up on the right and over the top empties into the trough. As in Brown's figure the trough lies across the wheel's plane inside the wheel above the axle (seen end-on): the water stands in it behind a low board and spills into its drain end. Nothing drives the wheel but the water. gen442.py with cfg442.
- Measured
- The wheel turns the right way at about 0.4-1.0 rad/s (q about 9 rad in 12 s); the trough fills in the first 5 s and then holds about 40 particles of water while the pots keep emptying into it.
- Notes
- The trough's drain end runs back out of the picture along the line of sight, so in this plane its water leaves the simulation there in view (a sink in the trough's end compartment). The pots are fixed to the rim (not hung); the spokes, rings and axle are drawn only.
Film (MP4) · Still (PNG) · Spec (YAML) · Model (MJCF)
