Water flows steadily between two cross sections in a long and straight pipe of 12 inch inside diameter. The pressure at the centroid of each section are indicated in the figure. If the average velocity in the pipe is 10 m/s. (a) Determine the frictional force exerted by the pipe wall on the water flowing between sections (1) and (2). (b) Assume the wall shear stress can be expressed as: where fis a friction factor which can be taken as 0.016 here, p is water density (1000 kg/m³) and Vis the average velocity in the pipe. What is the distance between sections (1) and (2)? [D= 12 in. Section (1) Section (2) p =30000 pa P = 20000 pa
Water flows steadily between two cross sections in a long and straight pipe of 12 inch inside diameter. The pressure at the centroid of each section are indicated in the figure. If the average velocity in the pipe is 10 m/s. (a) Determine the frictional force exerted by the pipe wall on the water flowing between sections (1) and (2). (b) Assume the wall shear stress can be expressed as: where fis a friction factor which can be taken as 0.016 here, p is water density (1000 kg/m³) and Vis the average velocity in the pipe. What is the distance between sections (1) and (2)? [D= 12 in. Section (1) Section (2) p =30000 pa P = 20000 pa
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Hydraulics
Transcribed Image Text:Water flows steadily between two cross sections in a long and straight pipe of 12 inch inside diameter.
The pressure at the centroid of each section are indicated in the figure. If the average velocity in the pipe
is 10 m/s.
(a) Determine the frictional force exerted by the pipe wall on the water flowing between sections (1)
and (2).
(b) Assume the wall shear stress can be expressed as:
where fis a friction factor which can be taken as 0.016 here, p is water density (1000 kg/m³) and Vis the
average velocity in the pipe. What is the distance between sections (1) and (2)?
D = 12 in.
%3D
Section (1)
Section (2)
P = 30000 pa
P2 = 20000 pa
%3D
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