Bejan Number - Heat Transfer
Tags: Heat Transfer Open Channel Pressure Loss
Bejan number - heat transfer, abbreviated as Be, a dimensionless number, is the pressure drop along a channel of length.
Bejan Number - Heat Transfer formula |
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\(\large{ Be = \frac{ \Delta p \; l^2 }{ \mu \; \alpha } }\) (Bejan Number - Heat Transfer) \(\large{ \Delta p = \frac{ Be \; l^2 }{ \mu \; \alpha } }\) \(\large{ l = \sqrt{ \frac{ Be \; \mu \; \alpha }{ \Delta p } } }\) \(\large{ \mu = \frac{ \Delta p \; l^2 }{ Be \; \alpha } }\) \(\large{ \alpha = \frac{ \Delta p \; l^2 }{ Be \; \mu } }\) |
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| Symbol | English | Metric |
| \(\large{ Be }\) = Bejan number | \(\large{dimensionless}\) | |
| \(\large{ \Delta p }\) = pressure drop | \(\large{\frac{lbf}{in^2}}\) | \(\large{Pa}\) |
| \(\large{ l }\) = length of channel | \(\large{ft}\) | \(\large{m}\) |
| \(\large{ \mu }\) (Greek symbol mu) = dynamic viscosity | \(\large{\frac{lbf-sec}{ft^2}}\) | \(\large{ Pa-s }\) |
| \(\large{ \alpha }\) (Greek symbol alpha) = thermal diffusivity | \(\large{\frac{ft^2}{sec}}\) | \(\large{\frac{m^2}{s}}\) |
