Question

A vertical face ogee 1.5m is operating at a design head of 3m. Calculate the depth of flow immediately dowmstream from the weir

Answer 1

P_i = P_f

7.750×10₆ kg•m/s = 6.750×10⁶ kg•m/s + (250 kg)v'

(7.750×10₆ - 6.750×10⁶ )kg•m/s= (250 kg)v'

10⁶ m/s = 250v'

v' = (10⁶/250) m/s

v' = 4000 m/s