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Chapter 8 Solutions
Applied Fluid Mechanics (7th Edition)
- 1. An 80 mm schedule 40 steel pipe is 1800 m long and carries a lubricating oil between 2 points A and B such that the Reynolds number is 1200. Point B is 10 m higher than point A. The oil has a specific gravity of 0.85 and dynamic viscosity of 6.51 X 10-1 Pa.s. If the pressure at A is 345 KPa, calculate the pressure @ B. 2. Determine the energy loss for a sudden contraction from a 4 in schedule 80 steel pipe to a 1.5 in schedule 80 pipe for a flow rate of 250 gal/min. 3. Determine the equivalent length in meters of pipe of a quarter open gate valve placed in a DN 250 schedule 40 pipe.arrow_forwardThree hundred and eighty five gallons of water per minute is flowing through a 4.3-in radius horizontal pipe. If the bore of the pipe is reduced to 2.7-in radius and the pressure in the smaller pipe is 93 psig, what is the pressure in the larger section of the pipe? Include schematic diagram.arrow_forwardQUESTION 1 of From pump 1.0 m a. Using a vertical bar chart, plot the pressure drop (i.e. P₁-P₂) for these eight nominal pipe sizes: 3/4", 1", 1- 1/4", 1-1/2", 2", 2-1/2", 3", 4", 6", and 8" 1.5 m Given the following conditions: Carbon tetrachloride at 20 °C is flowing through the piping system at a volumetric flow rate of 0.2 m³/min Total length of piping = 50 m Piping to be used is schedule 40 carbon steel pipe with an absolute roughness = 0.05 mm All 45° and 90° elbows have 'threaded regular' geometry Use the nominal pipe dimensions (3/4", 1", etc) for the x-axis labels but be sure to use the actual internal pipe diameters (given in document titled 'Table D1 in Janna textbook') in your calculations. HINT: Using a logarithmic scale on the y-axis scale will allow you to better compare the entire range of values. b. Re-do plot from part a, but now include the total cost (in USD) of the piping (you can ignore the costs associated with the fittings) on a secondary y-axis. For the piping…arrow_forward
- Q6/ Determine the pressure difference between pipes A and B for the differential manometer shown in Fig. Q7/A shaft of diameter 120 mm is rotating inside a journal bearing of diameter 122 mm at a speed of 360 rpm. The space between the shaft and bearing is filled with lubricating oil of viscosity 6 poise. Find the power absorbed in the oil if the length of bearing is 100 mm. Water Water Water ito 1.2 m 1.5m 0.5m Im Mercury (sp gr = 13.6) 1.3 marrow_forwardA shaft with a 25 mm radius is pushed at 300 mm/s inside a 25.5 mm radius bearing sleeve with a 230 mm length. Between them, a 0.003m2/s - kinematic viscosity oil has been poured to fill the space. It has a specific gravity of 0.8. How much force does the oil exert on the shaft?arrow_forwardA plunger (54 mm Ø and 0.5 m long) is moving through a horizontal cylinder (60 mm Ø) containing oil at a speed of 8 m/sec that has a viscosity of 7.1x10-6 m2/sec and specific gravity of 0.84. Calculate the force needed to maintain its velocity. Use 2 decimal places.arrow_forward
- Pipeline A has oil of relative density 0.85 and pressure gauge reading at B is 330 kPa.arrow_forwarddraw or make the FBD A test tube standing vertically in a test tube rack contains 2.5 cm of oil (ρ =0.81 g/cm3) and 6.5 cm of water. What is the gauge and absolute pressure on the bottom of the test tube? A 10kg block of Aluminum (ρ = 2700kg/m3) is attached to a rope. a. What is the tension force in the rope if the block is in a vacuum?b. What is the tension force if the block is in air (ρ = 1.29kg/m3)c. What is the tension force if the block is in water (ρ=1,000 kg/m3) A downward force of 100 N is applied to the small piston with a diameter of 50 cm in the hydraulic lift system shown below.a. What is the upward force exerted by the large piston with a diameter of 2m?b. What is the mechanical advantage of this hydraulic lift?c. If the input force of 100N pushes the small piston down by 2m, how high will the large piston rise? Water flows through a circular pipe with a constant radius of 10cm. The speed and pressure at point A is 4m/s and 250,000Pa respectively.a. What is the speed…arrow_forward2. Determine the Universal Saybolt Viscosity of water at t=3s. Convert the answer to Poise. 3. Convert the pressure gauge reading of 3bar to absolute pressure in psi and kpa. 4. What is the kinematic viscosity of kerosene in ft/s at u=1.64centiPoise? Density of kerosene is 775ka/m 5. What is the diameter of the other end of the pipe connection with V= 5ft/s if on the other end of the pipe is 3/4" diameter with 3ft/s?arrow_forward
- 1)Determine the force F that needs to be applied in the horizontal direction. 2) If a 0.30 mm thick oil film with a dynamic viscosity of 0.0115 Pa-s is applied between the block and inclined surface, determine the viscous friction force (Ff) in Newtons. 3) Find the new value of the required horizontal F in Newtons. And Find the percent reduction in the required force F from the case without the oil filmarrow_forwardFor the Pipe shown Q=4250 gallons per minute (gpm), P1=132 kPa and P2 = 211 kPa. If the pipe carries a special fluid of SG=1.2, determine the pressure head at section 2. Do not write the unit. You will only input the numerical answer in the space provided. Unit of the Correct Answer: m Decimal Places required in the final answer: 3arrow_forwardThe standpipe is connected at C to the field storage tank with oil, and the system is open to the atmosphere at B and E. Suppose that hj = 9 ft , hɔ = 5.5 ft and h3 = 8 ft. Take po = 1.78 slug/ft³. (Figure 1) Figure 1 of 1 B 4 ft E hi F h3 C h2 If the level of oil in the pipe is at F, determine the largest gage pressure in the tank in psi. Express your answer to three significant figures and include the appropriate units. At what level should the oil be in the tank, so that the maximum gage pressure occurs in the tank and the oil doesn't flow out from the tank at B? O F O A ОЕ Ос Ов What is the value of the maximum gage pressure that can occur in the tank if oil doesn't flow out from the tank at B? Express your answer to three significant figures and include the appropriate units.arrow_forward
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