Hagen number

From Wikipedia, the free encyclopedia

You have new messages (last change).

The Hagen number is a dimensionless number used in forced flow calculations. It is the forced flow equivalent of the Grashof number.

It is defined as:

Hg = \frac{-d p}{\rho d x}\frac{L^3}{\nu^2}

where:

  • \frac{-d p}{d x} is the pressure gradient; for natural convection:=(gρβΔT) i. e. Hg -> Gr
  • L is a characteristic length
Retrieved from "http://en.wikipedia.org../../../h/a/g/Hagen_number.html"
In other languages