- The inlet velocity of water (p = 1000 kg/m?) in a right-angled bend reducer is V, = 1 m/s as shown 1 / below. The inlet diameter is D, = 0.8 m and the outlet diameter is D2 = 0.4 m. The flow is turbulent and the velocity profiles at the inlet and outlet are flat (plug flow) gravitational forces are negligible. V, P1, D. V2, P2, D2 (1) Find the pressure drop (P, -p) across the bend assuming negligible friction losses. (II) If the actual pressure drop is (p. - p) = 8.5 kPa, find the friction loss factor (K) based on the velocity V