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A steel pipe with total length 2L, where L=930m long (figure below) placed on a uniform slope has a 0.50-m diameter and a 5-cm wall thickness. The pipe carries water from a reservoir and discharges it into the air at an elevation(Z), where Z= 80m below the reservoir free surface. A valve installed at the downstream end of the pipe (point 2) allows a flow rate of 0.80 m³/s. If the valve is completely closed in 1.4, neglect minor losses, given that the roughness of steel pipe is 0.046-mm and kinematic viscosity is 1.14x 10-6

A steel pipe with total length 2L, where L=930m long (figure below) placed on a uniform slope has a 0.50-m diameter and a 5-cm wall thickness. The pipe carries water from a reservoir and discharges it into the air at an elevation(Z), where Z= 80m below the reservoir free surface. A valve installed at the downstream end of the pipe (point 2) allows a flow rate of 0.80 m³/s. If the valve is completely closed in 1.4, neglect minor losses, given that the roughness of steel pipe is 0.046-mm and kinematic viscosity is 1.14x 10-6

Elements Of Electromagnetics
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
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A steel pipe with total length 2L, where L =930m long (figure below) placed on a uniform slope has a 0.50-m diameter and a 5-cm wall thickness. The pipe carries water from a reservoir and discharges it into the air at an elevation(Z), where Z = 80m below the reservoir free surface. A valve installed at the downstream end of the pipe (point 2) allows a flow rate of 0.80 m /s. If the valve is completely closed in 1.4, neglect minor losses, given that the roughness of steel pipe is 0.046-mm and kinematic viscosity is 1.14 x 10-6 m2/s. Use Ewater = 2.17 x 10° N/m² and Ep = 1.9 x 1011 N/m². Water unit weight is 9810 N/m³, and density 1000 kg/m³, and acceleration of gravity is 9.81 m/s². L (m) Z (m) L (m) Valve 3 What is the pipe area, A? Find flow velocity, V. What is Reynolds number, Re?
Transcribed Image Text:A steel pipe with total length 2L, where L =930m long (figure below) placed on a uniform slope has a 0.50-m diameter and a 5-cm wall thickness. The pipe carries water from a reservoir and discharges it into the air at an elevation(Z), where Z = 80m below the reservoir free surface. A valve installed at the downstream end of the pipe (point 2) allows a flow rate of 0.80 m /s. If the valve is completely closed in 1.4, neglect minor losses, given that the roughness of steel pipe is 0.046-mm and kinematic viscosity is 1.14 x 10-6 m2/s. Use Ewater = 2.17 x 10° N/m² and Ep = 1.9 x 1011 N/m². Water unit weight is 9810 N/m³, and density 1000 kg/m³, and acceleration of gravity is 9.81 m/s². L (m) Z (m) L (m) Valve 3 What is the pipe area, A? Find flow velocity, V. What is Reynolds number, Re?
What is the friction factor, f? What is the pressure at valve location, P2 = ? What is the theoretical celerity is, c' ? What is the actual celerity or wave speed, c ? Determine the critical time of closure, t2L ? Determine the maximum increase of pressure generated by water hammer, A P.
Transcribed Image Text:What is the friction factor, f? What is the pressure at valve location, P2 = ? What is the theoretical celerity is, c' ? What is the actual celerity or wave speed, c ? Determine the critical time of closure, t2L ? Determine the maximum increase of pressure generated by water hammer, A P.
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