His assessment was based on the cross-sectional area of the pipes or channels, and he did not take water velocity into consideration.
The graph takes sediment particle size and water velocity into account.
If the conditions do not meet their standards, they refuse to mate and wait until the water velocities go back down to ideal.
The water velocity of the Aller is very slow in places.
Note that even though the model is scaled smaller, the water velocity needs to be increased for testing.
The smaller head means that the water velocity is much lower and more lower power turbines are required.
Sometimes momentum pressure from water velocity inside the piping is also calculated.
Special short range sonars have been developed to allow measurements of water velocity.
In up to five different depths, the water velocity is observed using rotor current meters.
The actual flow is computed as a function of the water velocity and phase.