Filling the silo...

Silo stock0

Trough0

Fed today0

Drag along the trough to pour feed by hand. Drag elsewhere to orbit, scroll or pinch to zoom.

Feed Silo Hopper Discharge and Trough Auger

Beverloo orifice flow, Janssen wall pressure, arching, a screw conveyor and animals that eat on a daily schedule

Presets

Time

Silo and hopper

Feed

Auger and trough

The herd

Animals

Each pictured animal stands for

Hand-pour rate (drag on the trough)

Hens, pigs and cows are drawn at true size. The scale factor lets a handful of animals draw the feed of a commercial house, so the silo level moves.

View

Live readouts

Graphs

Experiment: how long does the hopper take to empty?

Runs the discharge model for 500 kg through the current orifice, with the 3 % random fluctuation real flow has, and compares the measured time with M/W from Beverloo's law. It also finds the smallest outlet that does not arch for this feed and moisture.

Independent numerical checks

The science

Quality: (also ?q=low)