Oil (SG = 0.89), with a kinematic viscosity of 0.007 ft2/s, flows in a 3-in.-diameter pipe at 0.049 ft3/s. Determine the head loss per unit length of this flow.

6. Crude oil of relative density 0.91 (viscosity 1.24 poise) is pumped through a supply pipeline 75 mm diameter, where a flow of 420 litres/min takes place between pipeline section 1.25 km from the feeder reservoir, and section 1.60 km from the feeder reservoir. A piezometer records a pressure of 12425 Pa at the section D. Taking head loss due to friction into consideration as per viscous flow or turbulent flow prevailing, evaluate the pressure head at section 2.

Calculate the minimum fluidization velocity for an anthracite bed having following characteristics; d90 = 2.9 mm, ?anthracite = 1600 kg/m3, ?water = 998 kg/m3 at 20°C; µ = 1.002x 10-3 kg/m.sec

Oil with specific gravity of 0.88 flows through a pipe which changes from 6 in. at section A to 18 in. at section B. Section A is 12 ft lower than B and the pressures are 13.2 psi and 8.75 psi, respectively. If the flow rate is 5.17 cfs, determine (a) The velocity (ft/s) at section A, (b) The velocity (ft/s) at section B, (c) The head lost (ft) between the two points, and (d) The direction of flow. Is it from A to B or B to A?