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:
where
ε = void fraction μ = dynamic viscosity ρ = fluid density Dh = hydraulic diameter u = flow velocity
External links
- Tomas, J. (2010). "Mechanical Process Engineering – Particle Technology" (PDF). Otto von Guericke University of Magdeburg. Archived from the original (PDF) on 19 July 2011. Retrieved 11 February 2011.
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