Gravity pipe flow occurs when a liquid—typically water, sewage, or storm runoff—flows through a pipe . The movement is driven solely by the slope (gradient) of the pipe and the force of gravity, not by pumps or external pressure.
A robust gravity flow calculator typically includes the following inputs and outputs:
[ Q = \frac1n \cdot A \cdot R^2/3 \cdot S^1/2 ]
The gravity pipe flow calculator is based on the following equations: