Calculating Diameter in Pipe Flow: Summary

The answers to the ConcepTests are given below and will open in a separate window. 
Key points from this module:
  1. The diameter of a pipe cannot be solved algebraically for turbulent flow.
  2. Either a trial-and-error or root solving program must be used to solve.
  3. Both major and minor losses can be included in your calculations.
From studying this module, you should now be able to:
  • Rewrite the important equations in terms of diameter.
  • Solve for the friction factor using both trial-and-error and Excel.
  • Use the friction factor and the simplified energy equation to calculate the diameter.
Prepared by Janet deGrazia, Department of Chemical and Biological Engineering, University of Colorado Boulder