Submit an ArticleBecome an author and publish your articles with us!

Difference between Fanning friction factor and Darcy friction factor

What is the Difference between Fanning friction factor and Darcy friction factor?

Fanning friction factor

The Fanning friction factor is defined as follows:

ff = fd /4

Where;

ff =Fanning friction factor
fd =Darcy friction factor

Darcy friction factor

The Darcy friction factor is defined as follows:

fd = 4 * ff

Where;

ff =Fanning friction factor
fd =Darcy friction factor

So, Darcy friction factor is 4 times higher than Fanning friction factor

What about Moody chart?

The friction factor obtained from Moody chart is mainly the “Darcy Friction Factor”. So if we are taking about Moody Friction factor or Moody Friction Chart we are mainly referring to “Darcy Friction Factor”, we can calculate it from Colebrook–White equation when the flow is turbulent.

 

Other Resources

 

USEFUL SOFTWARE

USEFUL MOBILE APPLICATIONS

 

By continuing to use the site, you agree to the use of cookies. more information

The cookie settings on this website are set to "allow cookies" to give you the best browsing experience possible. If you continue to use this website without changing your cookie settings or you click "Accept" below then you are consenting to this.

Close