# Hagen number

> dimensionless number used in forced flow calculations

**Wikidata**: [Q1568363](https://www.wikidata.org/wiki/Q1568363)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Hagen_number)  
**Source**: https://4ort.xyz/entity/hagen-number


## References

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