Blake number
The Blake number in fluid mechanics is a nondimensional number showing the ratio of inertial force to viscous force. It is used in momentum transfer in general and in particular for flow of a fluid through beds of solids. It is a generalisation of the Reynolds number for flow through porous media.
Expressed mathematically the Blake number \(B\) is:
\[B = \frac{V \rho}{\mu ( 1-\epsilon) D}\]
where
\(\epsilon\) = void fraction \(\mu\) = dynamic viscosity \(\rho\) = fluid density \(D\) = characteristic particle diameter \(V\) = flow velocity
External links
- Tomas, J. (2010). "Mechanical Process Engineering – Particle Technology". Otto von Guericke University of Magdeburg. http://www.uni-magdeburg.de/ivt/mvt/englisch/Vorlesung/Lecture_MPE/Fig_MPE_4.pdf. Retrieved 11 February 2011.پ
