Example 6 A 60 cm diameter rough pipe carries water. The velocity at 4 cm from the pipe wall is 3m/sec and the velocity gradient at the same point is 11.25 sec-1. Determine 1. The mean velocity of flow 2. Friction factor 3. Average shear stress at the wall 4. Average height of roughness protusions

Example 6 A 60 cm diameter rough pipe carries water. The velocity at 4 cm from the pipe wall is 3m/sec and the velocity gradient at the same point is 11.25 sec-1. Determine 1. The mean velocity of flow 2. Friction factor 3. Average shear stress at the wall 4. Average height of roughness protusions

Principles of Foundation Engineering (MindTap Course List)

8th Edition

ISBN:9781305081550

Author:Braja M. Das

Publisher:Braja M. Das

Chapter15: Braced Cuts

Section: Chapter Questions

Problem 15.5P

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Question

Example 6
A 60 cm diameter rough pipe carries water. The velocity at 4 cm from the pipe wall is 3m/sec and
the velocity gradient at the same point is 11.25 sec-1. Determine
1. The mean velocity of flow
2. Friction factor
3. Average shear stress at the wall
4. Average height of roughness protusions

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