MEN 320 Final, Fall 2009

2010 Fluid Part 1 2 hrs Answer 6 out of 7 Bonus) [+4 poiwtal a) Consider the flow of air ina pipe and water in another pipe of the same diameter, at the same mean velocity, same length & same temperature, Whiel flow is more likely to be turbulent? Why? bb) Suppose you ave looking to the following apparatus used to measure the flow veloeity of air, The apparatus measure static pressure at the wall and stagnation pressure 15 m downstream What is wrong with the apparatus and the manometer? ism 1= Water at 20 ¢ , flow from the pump to closed reservoir through commercial steel pipe aa shown below (¢ =4.6.10° m). Determine the pump discharge pressure, Take tonk exit minor loss K =I. [5 points) Pte0.§ Bar 2-For the two identical orifices discharging shown in Figure below , prove that HY. = HeYe. [8 points) ) Le 3- Oil is pumped ina od em diameter pipe of length 3000 m. The rate of flow is Q 0.6 m° /sec, Find the head loss and the power required to overcome the viscous resistance of the oil flow (Sg = 0.85, » = 0.001 Pa. sec, Roughness, e = 0.03 mm). [5 points} 4-Water at 20°C flows through the pump shown below at 0.068"m'/s , The total head loss between 1 and 2 is 2.4m, the pump water power is 6 Kw, What should be the mercury -manometer deflection reading “h” be? (v =1.10m*/s), Take one inch =2.54 cm (5 points] Tea gare shown tate se tineged a gully’ 1 IDE UE eens AN he Hb inlet ht Pree Alciege ot pagal Ie aa IHN w este colouiahe 2) ha hans 21 1) DHA RET stom, cate 2) wt NET