To calculate the discharge flowrate, we will use the Darcy-Weisbach equation along with an iterative approach for the friction factor, as it depends on the flow velocity. We will perform two trials as

To calculate the discharge flowrate, we will use the Darcy-Weisbach equation along with an iterative approach for the friction factor, as it depends on the flow velocity. We will perform two trials as requested.

Given data:

• Pipe diameter $D = 160 \text{ mm} = 0.160 \text{ m}$
• Pipe roughness $\epsilon = 0.040 \text{ mm} = 0.000040 \text{ m}$
• Pipe length $L = 150 \text{ m}$
• Pressure difference $\Delta P = 50 kPa = 500