Peclet Number
Peclet number is proportional to { (bulk heat transfer) / (conductive heat transfer) } and is used in heat transfer in general and forced convection calculations in particular. It is equivalent to (Re.Pr). It is normally defined in one of the following forms :
or
or
Where: | ||
alpha | = | Thermal diffusivity |
Cp | = | Heat capacity |
D | = | Characteristic length |
G | = | Mass velocity |
k | = | Thermal Conductivity |
rho | = | Density |
V | = | Velocity |