Task 1 From a reservoir under excess pressure

Task 1 Water flows from a tank under excessive pressure p0 = 20 kPa into an open tank. Determine the water flow rate if H1 = 10 m, H2 = 2 m, pipe diameter d = 100 mm, sump diameter D = 200 mm. The resistance coefficient of the valve is ζ = 4, and the radius of rounding turns is R = 100 mm. Due to the insignificant length of the pipeline, the friction resistance should be neglected.