Water Flow Rate from a Tank: Geometry or Level?

[polezero]

Hello guys,

I want to know whether the water flow rate from a tank depends on the geometrical shape of the tank (for instance sperical, rectangular, cylindrical) etc or it just depends on the water level in the tank. Thanx.

 

[CarlAK]

Well if the flow is through a (relatively) small opening, the instantaneous flow rate is dependent on the pressure head, size of opening, and shape of opening.
V=Cd (2gh)^1/2
Q=VA
So tank geometry doesn't come into play. Time to empty would be affected by tank size & geometry.