Repeat Problem 9.16 for the same conditions, except that the inside of the pipe is roughen...

Repeat Problem 9.16 for the same conditions, except that the inside of the pipe is roughened by age so that e = 5.0 × 10–3. Plot the results on the same graph as that used for the results of Problem 9.16.

Problem 9.16

Using Eq. (9–3), compute several points on the velocity profile for the flow of 400 gal/min of water at 50°F in a new, clean, 4-in Schedule 40 steel pipe. Make a plot similar to Fig. 9.7 with a fairly large scale.

FIGURE 9.7 Velocity profile for turbulent flow for Example Problem 9.3.