Recognitions:

## Fully developed flow

What "fully developed" means here is:

If you take two sections through the wedge at different points in the flow, the flow profile is the same at each section. Also if you look at the flow at one pont at different times, it will be the same.

Most of the previous posts are about WHY the flow gets to be fully developed (or not) rather than what the consequences are.

From the second part of my definition, the flow is independent of t.

From the first definition, it follows that the v and w components must be zero everywhere. If there was a w velocity component to the left (say) at one point down the wedge, then "fully developed" means there would be the same velocity component left at EVERY point down the wedge, so all the water will finish up on one side, which is nonsense. The same applies to the v component.

So the velocity components v and w are 0. and the velocity does not depend on t or on x.

In other words, the general expression for the velocity is u(y,z).

Recognitions: