Compute the reynolds number
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- Evaluate the Reynolds number for flow over a tube from the following data: D=6cm,U=1.0m/s, =300kg/m3,=0.04Ns/m2.Compute the pressure drop of 15°C air flowing with a mean velocity of 10 m/s in a circular sheet metal duct 250mm in diameter and 25 m long. a.118.67 Pa b.120.92 Pa c. 122.54 Pa d.124.82 PaOil with specific gravity of 0.80 flows through a pipe X 200 L/s at elev 20, 200 mm diameter, 200 m long with a pressure of 100 kPa to pipe Y at elev 10 m, 100 mm in diameter, 100 m long with a pressure of 50 kPa. Compute the total energy at X. a.49.41 m. b.34.81 m. c.14.6 m. d.25.45 m
- FLUID MECH Support your answer with the appropriate solution and diagram. 8. Oil with specific gravity of 0.80 flows through a pipe X 200 L/s at elev 20, 200 mm diameter, 200 m long with a pressure of 100 kPa to pipe Y at elev 10 m, 100 mm in diameter, 100 m long with a pressure of 50 kPa. Compute the total energy at X. A. 49.41 m. B. 14.6 m. C. 34.81 m. D. 25.45 m.Air flows at Q=5 m³/s in a 1-m diameter stainless steel duct (roughness of 0.002 mm) the air properties are (-1.23 kg/m³ and -1.8 x 10^5N-s/m²). Approximate the minimum length of the duct so that entrance lengths can be ignored in the calculation of the pressure drop. a.41.1 m b.206 m c.20.6 m d.0411 Option a is incorrectOil with specific gravity of 0.80 flows through a pipe X 200 L/s at elev 20, 200 mm diameter, 200 m long with a pressure of 100 kPa to pipe Y at elev 10 m, 100 mm in diameter, 100 m long with a pressure of 50 kPa. Compute the total headlooss of the pipe. a.25.45 m. b.34.81 m. c.14.6 m. d.49.41 m.
- Calculate the heat transfer Coefficient for hydrogen flowing through a 84.480mm Velochy of 1.95 m/s. Bore with a Average temp is 1200 °C ?A two branch duct system of circular duct is shown below. The fittings have the following equivalent lengthof straight duct upstream to branch 4m elbow 2m. There is negligible pressure loss in the straight throughsection of the branch. The designer slects 3m/s as the air velocity in all branch sections.What diameter in ft should be selected in the 5 m branch section? A. 2.136 B. 0.340 C. 0.651 D. 1.050Two pipes with same diameter are in parallel. If first has friction coefficient twice that of other, for equal flow in pipes, the ratio of first pipe to the second is: (with fbd) A. 2 B. 1/2 C. 1/32 D. 4
- Calculate the diameter of the nozzle (in mm) by a jet of water discharging freely out of a nozzle, fitted to a pipe 300 m long and 100 mm diameter with coefficient of friction as 0·01. The available head at the nozzle is 90 m. a. 372 b. 33 c. 25.4 d. 10.29Water at room temperature with a mass flow rate of 2 kg / s flows through a system of 2 pipes connected in series. The first piece of pipe is 10 m long 1 in. Sch. 40, the second piece of pipe is 15 m long 2 in. Sch 40 is made of commercial steel tubing. Piping system is horizontal. Calculate the pressure loss across both pipes and the pump power required to flow water through this piping system, ignoring the energy loss of the fitting. CREATE THE KNOWN AND UNKNOWN BY DRAWING THE SHAPE OF THE ORGANIZATION AND WRITE YOUR ASSUMPTIONS IN DETAILAir at 30 C and 2.5 atm is to be transported at a rate of 0.25 kg/s with a maximum velocity of 5 m/s. What should be the minimum diameter of pipe to be used? Ans. 6"