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If the flow is unsteady, it cannot be uniform.
Uniform flow has constant depth and velocity in time and space.
Unsteady flow is changing the depth and the velocity with time and space.
b.
Gravity, friction, pressure gradient, and inertia.
c.
W/D > 10
d.
Under Chezy friction, the neutral-stability Froude number is 2.
e.
Maximum value of Manning's n: n = 1, applicable to the
Everglades flow modeling, in Southern Florida.
Seddon waves are kinematic, with small dimensionless wavenumber;
Lagrange waves are dynamic, with large dimensionless wavenumber.
They have in common a lack of attenuation, or dissipation.
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