Crowdly

The Hydraulic Jump’s nose

The Hydraulic Jump’s inlet

The Hydraulic Jump’s tail

The force momentum equation relates the Specific Forces across the Hydraulic Jump. Which is the correct equation?

The upstream Froude number dictates the height of the Hydraulic Jump?

True

False

Across a Hydraulic Jump there must be a:

A balance of the specific forces

An unbalance of the specific forces acting upstream to hold the jump in position

An unbalance of the specific forces acting downstream to cause the energy loss at the jump

A balance of the specific energy

If the specific forces across a Hydraulic Jump are unbalanced, the HJ will move:

upstream rapidly

downstream rapidly

In the direction of the unbalanced force at a velocity dictated by the relative magnitude of the unbalanced force

Rapidly up and down as an oscillating jump

The depths either side of a hydraulic jump can be found through “X” of the “Y”.

The relationship between Specific Energy and Specific Forces across a hydraulic jump is shown in the sketch below. Is this sketch correct?

“X” – Sequent Depths “Y” – Force balance equations

“X” – Subsequent Depths “Y” – Force balance equations

“X” – Subsequent Depths “Y” – Energy balance equations

“X” – Sequent Depths “Y” – Energy balance equations