a) Explain the development of boundary layer in pipe's flow with the…

Question

a) Explain the development of boundary layer in pipe's flow with the help of a neat sketch. (10)

b) Water is discharged from a tank maintained at a constant head of $5\text{ m}$ above the exit of a straight pipe $100\text{ m}$ long, $15\text{ cm}$ in diameter. Estimate the rate of flow if the friction coefficient for the pipe is given as $0.01$. (10)