2. Castor oil flows through a pipe that has a cross-section of an equilateral triangle with a side length of 10 cm. The volume flow rate of the oil was measured to be 1.2 liters/second. The absolute viscosity of castor oil is about 650 cP. Calculate the Reynolds number and identify the type of flow.

Oil of specific gravity 0.70 and dynamic viscosity of 0.05Pa-s flows at a rate of 100lit/sec through a 80m of 150mm diameter pipe. If the head lost is 4m, determine the reynolds number, maximum velocity in m/s, maximum shear stress in Pa , Velocity 40mm from centerline of pipe in m/s.