Question

1.2 A horizontal Venturi meter is used to measure the flow of water in a 400mm diameter pipe. The throat diameter of the Venturi meter is 100mm and the the discharge coefficient is 0.85. if the pressure difference between the two measurement points is 10cm of mercury, then calculate the average velocity in the pipe. take the relative density of mercury as 13.6.
b) What diameter pipe would be required to double the capacity for the 400mm concrete conduit pipe of of 30m length with a roughness coefficient of n=0.013, s=0.045 and a discharge capacity of 0.9m^3/s

Answer 1

Tgiven data will be use to calculate friction coefficient but at last that will be cancelled out so not used here