- External links
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 {{math|B}} is:
where
| ε}} | = | void fraction |
| μ}} | = | dynamic viscosity |
| ρ}} | = | fluid density |
| Dh}} | = | hydraulic diameter |
| u}} | = | flow velocity |
External links
- {{cite web | url=http://www.uni-magdeburg.de/ivt/mvt/englisch/Vorlesung/Lecture_MPE/Fig_MPE_4.pdf | first=J. | last=Tomas | title=Mechanical Process Engineering – Particle Technology | year=2010 | publisher=Otto von Guericke University of Magdeburg | accessdate=11 February 2011 }}
3 : Fluid dynamics|Porous media|Dimensionless numbers
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