5) (Total: 21 marks) Water with density ()=988.0 kg/m² and dynamic viscosity (u)=0.902 10-3 Ns/m² is discharged from a v

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5 Total 21 Marks Water With Density 988 0 Kg M And Dynamic Viscosity U 0 902 10 3 Ns M Is Discharged From A V 1 (622.72 KiB) Viewed 36 times

5) (Total: 21 marks) Water with density ()=988.0 kg/m² and dynamic viscosity (u)=0.902 10-3 Ns/m² is discharged from a very large tank at a rate of 0.033 mº/s through a series of pipes made of iron as shown below. The iron has a roughness value (E)=0.24 mm. The water in the tank is open to the atmosphere at a pressure of 99.0 kPa. The pipes all have a 13.0-cm diameter. h1, h2 and hz are 5.50m, 17.5m and 1.30m, respectively. d, and d2 are 120m and 250m, respectively. The pipe entrance has a minor loss coefficient of 0.700. The 90° bend has a minor loss coefficient of 0.130. The valve is adjusted to have a minor loss coefficient of 1.45. Other minor losses are negligible. a) Determine the type of flow in the pipes. (3 marks) b) What is the total major head loss in the pipes? (6 marks) c) What is the total minor head loss? (3 marks) d) Determine the pressure of water at Point 2. (Note: you need to suggest and use an appropriate value of the kinetic energy correction factor.) (5 marks) e) Some time later, the water level in the tank drops by 20.0cm. Determine the new minor loss coefficient of the valve to maintain the same flowrate and same pressure at Point 2 as in Part d. (4 marks) V (1) h Entrance h2 hz Bend Valve (2) di dz