Secondly i don't know how to calculate The Darcy friction factor for turbulent flow (as is the case here initially) for K = f * Leq / D. Also what does Leq represents. I'm afraid I have no idea about most of what you say. It might help to tell you that before...
How is the friction factor calculated? The friction factor can be calculated using various equations such as the Darcy-Weisbach equation, the Colebrook equation, or the Moody chart. These equations take into account factors such as the fluid properties, pipe roughness, and flow conditions to...