Water in an open channel flows at a depth of 3.5 m, where the average velocity is 3 m/s. The bed is 12 m above the datum line. Find the total energy in pressure head per unit weight of water at the cross-section at any section.

Step-by-Step

Verified Solution

The total energy or pressure head of liquid in open channel by Bernoulli’s equation is:

H=z+y+\frac{V^{2} }{2g} (i)

Substituting the values of datum head, depth and velocity in Eq. (i), we have