Bejan Number - Fluid Mechanics

Bejan number - fluid mechanics, abbreviated as Be, a dimensionless number, is the pressure drop along a length of channel.

 

Bejan Number - Fluid Mechanics formula

\(\large{ Be =  \frac{ \Delta p \; l^2 }{ \mu \; \nu }  }\)

Where:

\(\large{ Be }\) = Bejan number

\(\large{ \mu }\)  (Greek symbol mu) = dynamic viscosity

\(\large{ l }\) = length of channel

\(\large{ \nu }\)  (Greek symbol nu) = momentum diffusivity (kinematic viscosity)

\(\large{ \Delta p }\) = pressure drop