# Fanning friction factor

> characteristic number for the friction on the wall of a fluid in a pipe

**Wikidata**: [Q2004420](https://www.wikidata.org/wiki/Q2004420)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Fanning_friction_factor)  
**Source**: https://4ort.xyz/entity/fanning-friction-factor


## References

1. Freebase Data Dumps. 2013
2. ISO 80000-11:2019 Quantities and units — Part 11: Characteristic numbers