Calculation for grain falling through a pipe
Calculation for grain falling through a pipe
(OP)
I am trying to calculate the necessary diameter (or cross sectional area) of a pipe to yeild a known flow rate for dispensing grain. Could anyone give me any pointers?





RE: Calculation for grain falling through a pipe
The air velocity has to exceed the particle's "saltation velocity" or its terminal falling velocity. If the particle has a size distribution or if all particles are a defined size then different calculation procedures are used.
Simplified maesures to calculate the required velocity use Stokes flow relationships , but these are only accurate at low rehynolds numbers.
RE: Calculation for grain falling through a pipe
http://www.senkbilefarms.com/dmc.htm
They should be able to point you in the right direction.
Maui
RE: Calculation for grain falling through a pipe