[Christ]

You've also gotten the water effect completely wrong. The coanda effect is best demonstrated using free flowing fluid under gravity. Introduce the flat side of a half sphere perpendicular to the flow, and it will spread over the surface, then follow the curvature of the sphere after the 90 degree drop, leaving the new flow in approximately the same place as the uninterrupted flow would have been.

However, if you introduce the same hemisphere, only with the flat side both parallel, and facing AWAY from the flow, the water flow will trail the arc until it has no more kinetic energy, then will fall to gravity again at that point, which could be several inches from the initial flow.