As can often be seen in a kitchen sink when the faucet is running, a high-speed channel fl...

As can often be seen in a kitchen sink when the faucet is running, a high-speed channel flow (υ1, h1) may “jump” to a low-speed, low-energy condition (υ2, h2). The pressure at sections 1 and 2 is approximately hydrostatic, and wall friction is negligible. Use the continuity and momentum relations to find h2 and υ2 in terms of (h1,υ1).