Problem modified from Example 5.8. The 20-cm-diameter (= d) tank of Figure 5.15 shown in the textbook contains chloroform, and it is being drained by the attached piping system. The pipe Section itself is made of 3-nominal schedule 40 commercial steel and it is 25 m long. Considering minor losses (90° elbow, regular), determine the variation of velocity and height with time if the height h is allowed to vary from an initial value of 2 m to 1.2 m. Assuming that the constant friction factor formulation can be applied. d b FIGURE 5.15. The unsteady draining tank problem.

Problem modified from Example 5.8. The 20-cm-diameter (= d) tank of Figure 5.15 shown in the textbook contains chloroform, and it is being drained by the attached piping system. The pipe Section itself is made of 3-nominal schedule 40 commercial steel and it is 25 m long. Considering minor losses (90° elbow, regular), determine the variation of velocity and height with time if the height h is allowed to vary from an initial value of 2 m to 1.2 m. Assuming that the constant friction factor formulation can be applied. d b FIGURE 5.15. The unsteady draining tank problem.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

A pump with an efficiency of 89.842 percent delivers water at a rate of 13.79 m3/s but with a leakage loss of 0.5 m3/s. The friction losses within the pump result in a 1 m head loss. What is the total dynamic head of the pump in meters if it has a mechanical efficiency of 98 percent?
Shown in the figure below is a pipe system (commecial steel pipes) having a given centerline geometry is to be used to transfer oil from Tank A to Tank B at a rate of 1.70 cubic meter per minute. Minor losses from the pipeline are due to 2 pcs-90o elbows (K = 0.5) ; Contraction (K = 0.05) and Expansion (K=1). If the oil has a density of 801.3 kilogram per cubic meter and viscosity of 2.394x10 -2 kilogram per meter per second, the diameter of the pipe in millimeter is Blank 1 mm. *Express your answers in whole significant figure without decimal value and without unit*
0105 Water at 40 °C is pumped from an open tank through 200 m of 50-mm-diameter smooth horizontal pipe as shown in Figure 1 and discharges into the atmosphere with a velocity of 3 m/s. Minor losses are negligible. (a) If the efficiency of the pump is 70%, how much power is being supplied to the pump? (b) What is the NPSHA at the pump inlet? Neglect losses in the short section of pipe connecting the pump to the tank. Assume standard atmospheric pressure. Note: for smooth pipe, friction factor, f = 0.0152 and at 40 °C. kinematic viscosity Temperature (°C) Water vapor pressure (N/m²) Specific weight (N/m³) (m²/s) 6.58 x 10-7 40 7.376 x 10³ 9.731 x 10³ T 3 m ! PUMP 9.731* Diameter = 50 mm Length 200 m e Figure 1
What’s the answer for this please ?
I am having trouble with this problem.
None
In the figure below, assume the pipe from B to C has a diameter of 4-inches, (f = 0.035), and length of 18-feet. The pipe from DE is 187-feet, has a diameter of 4-inches and friction factor of 0.035. The Az = 69-feet. The elevation of C is 14-feet above the lower water surface. If the pressure head @ C is to be no less than (-) 20 feet, and the pump has 63% efficiency, what horsepower must be supplied to the pump in order to convey flow through the system? (Kent = 0.8) Assume a submerged exit. Az
Question 8 download image D The water in a large tank exits through a horizontal circular pipe of diameter D=0.01m and length L=94m. The centre of the exit of the pipe is h=1.0m below the water surface. We can assume that the flow entrance to the pipe is smooth so that there are no minor losses. The flow in the pipe is laminar, the friction factor can be assumed constant and can be found from h fD=64/Rep where the Reynolds number is based on the pipe diameter and mean flow speed in the pipe. Taking frictional losses into account, solve the resulting quadratic equation to calculate the speed of the flow out of the pipe. Give your answer in m/s to 2 decimal places. Use: kinematic viscosity given by v=0.00000114 m²/s density of water given by 1000 kg/m3 acceleration due to gravity of 9.81 m/s² A Moving to another question will save this response. >>
Q3
The pressure drop in a horizontal commercial steel pipe should not exceed 1 psi per 150 feet of pipe length for flow rates up to 500 gal/min. If the water temperature is never below 50 F°, determine the necessary pipe diameter.
Water at 80°F flows from a storage tank through 618 ft of 6-in Schedule 40 steel pipe, as shown in the figure. Taking the energy loss due to friction into account, calculate the required head hin feet above the pipe inlet to produce a volume flow rate of 1.65 ft³/s. (round the final answer to three significant figures) h 6-in Schedule 40 steel pipe pipe length