QUESTION $1$

A horizontal pipe has a sudden contraction from DN$125$ to DN$80$ Schedule $40$ steel pipes. The water flows in the smaller pipe at $25C$ with a flowrate of $3020\frac{L}{m}in.$ The pressure in the larger section is $P1=380$kPa. The minor loss coefficient, $k2$ for the sudden contraction is given as $0\mathrm{.}15.$

a$)$ Illustrate the picture of the above problem. Determine the type of flow in the smaller and larger pipes.

$[10$ Marks$]$

b$)$ Determine the downstream pressure, $P2.$

$[7$ Marks$|$