Peclet Number
Péclet number, abbreviated as Pe, a dimensionless number, defined as a ratio of heat transport by convection to heat transport by conduction.
Peclet Number fromula |
||
\(\large{ Pe = \frac { v \; \rho \; C \; l_c }{ k } }\) | ||
Symbol | English | Metric |
\(\large{ Pe }\) = Peclet number | \(\large{dimensionless}\) | |
\(\large{ l_c }\) = characteristic length | \(\large{ft}\) | \(\large{m}\) |
\(\large{ \rho }\) (Greek symbol rho) = density | \(\large{\frac{lbm}{ft^3}}\) | \(\large{\frac{kg}{m^3}}\) |
\(\large{ Q_{cond} }\) = heat transfer by conduction | \(\large{\frac{Btu}{hr}}\) | \(\large{W}\) |
\(\large{ Q_{conv} }\) = heat transfer by convection | \(\large{\frac{Btu}{hr}}\) | \(\large{W}\) |
\(\large{ C }\) = heat capacity | \(\large{\frac{Btu}{F}}\) | \(\large{\frac{kJ}{K}}\) |
\(\large{ k }\) = thermal conductivity | \(\large{\frac{Btu-ft}{hr-ft^2-F}}\) | \(\large{\frac{W}{m-K}}\) |
\(\large{ v }\) = velocity | \(\large{\frac{ft}{sec}}\) | \(\large{\frac{m}{s}}\) |