Question

Calculate the discharge (in m³/s) through an open channel where width of the channel is 3 m and depth of flow is 7.8 m and average velocity of water flow is 1.46 m/s

Answer 1

Solution) As given in the question we have to find the shear discharge of the given open channel, as we know discharge is multiplication of area and velocity as we are given with the dimensions of the channel we can easily find the area and also we are given with velocity using which we can easily find the discharge as shown in the following solution -

Discharge = Area x Velocity

= Width x depth x velocity

= 3 x 7.8 x 1.46 m3/s

= 34.164 m3/s

Therefore the discharge through the open channel is 34.164m3/s