Characteristic numbers are dimensionless numbers used in fluid dynamics to describe a character of the flow. To compare a real situation (e.g. an aircraft) with a small-scale model it is necessary to keep the important characteristic numbers the same. Names of these numbers were standardized in ISO 31, part 12.


This article uses material from the Wikipedia article Characteristic number (fluid dynamics), which is released under the Creative Commons Attribution-Share-Alike License 3.0.