Example-1

A pipe having diameters 20cm and 10cm at two sections A and B, carries water that flows at a rate 40Lts/s. Section A is 5m above datum and section 'B' is 2m above datum. If the pressure at section A is 4 bar, find the pressure at section 2.

Solution :

Schematically, the pipe is shown in the following figure. It has two section; ' A' and ' B'.