Flow rate calculation from pressurised container
Flow rate calculation from pressurised container
(OP)
Hello
I am currently designing a device to fill gearboxes with hydraulic fluid using air pressure. The idea is to pressurise a container with say 9 litres of fluid inside to cause the fluid to flow out of a hose and into the gearbox.
My question is how can I calculate what pressure will need to be in the reservoir to get a flow rate of 2.5 L/s. Hose ID will be 10mm and approx 2m long.
I have attached a quick sketch of the layout.
I am currently designing a device to fill gearboxes with hydraulic fluid using air pressure. The idea is to pressurise a container with say 9 litres of fluid inside to cause the fluid to flow out of a hose and into the gearbox.
My question is how can I calculate what pressure will need to be in the reservoir to get a flow rate of 2.5 L/s. Hose ID will be 10mm and approx 2m long.
I have attached a quick sketch of the layout.
"Two hands working can do more than a thousand clasped in prayer"





RE: Flow rate calculation from pressurised container
What Viscosity?
Give more and exact data please.
RE: Flow rate calculation from pressurised container
The viscosity will be approx 38.9 cST 40°C.
However the figures are not important as I require the method (equation) in which to find the answer, not the answer itself.
"Two hands working can do more than a thousand clasped in prayer"
RE: Flow rate calculation from pressurised container
Poiseuille's equation for laminar flow (NRe < 2000).
Good luck,
Latexman
RE: Flow rate calculation from pressurised container
However do you know what the metric SI units for this equation are.
"Two hands working can do more than a thousand clasped in prayer"
RE: Flow rate calculation from pressurised container
RE: Flow rate calculation from pressurised container
RE: Flow rate calculation from pressurised container
Good luck,
Latexman
RE: Flow rate calculation from pressurised container
"Two hands working can do more than a thousand clasped in prayer"