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 Transfer formula |
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| \(\large{ Be = \frac{ \Delta p \; l^2 }{ \mu \; \nu } }\) | ||
| Symbol | English | Metric |
| \(\large{ Be }\) = Bejan number | \(\large{dimensionless}\) | |
| \(\large{ l }\) = length of channel | \(\large{ft}\) | \(\large{m}\) |
| \(\large{ \mu }\) (Greek symbol mu) = dynamic viscosity | \(\large{\frac{lbf-sec}{ft^2}}\) | \(\large{ Pa-s }\) |
| \(\large{ \nu }\) (Greek symbol nu) = momentum diffusivity (kinematic viscosity) | \(\large{\frac{ft^2}{sec}}\) | \(\large{\frac{m^2}{s}}\) |
| \(\large{ \Delta p }\) = pressure drop | \(\large{\frac{lbf}{in^2}}\) | \(\large{Pa}\) |
