Transport II Dimensionless Groups

Biot Number

Drag Coefficient

Froude Number (Fr)

external heat transfer/internal heat transfer

Drag/inertial forces

inertial forces/gravitational forces

Grashof Number (Gr)

buoyancy due to thermal expansion/viscous dissipation

Nusselt Number (Nu)

total heat transfer/conductive heat transfer

Peclet Number (Pe)

convection/diffusion

Prandtl Number (Pr)

momentum diffusivity/thermal diffusivity

Rayleigh Number (Ra)

buoyancy due to thermal expansion/dissipation

Reynolds Number (Re)

inertial forces/viscous forces

Womersley Number (alpha)

penetration depth/tube length

Stanton Number

heat transfer/convective heat transfer

fanning friction factor

wall shear stress/dynamic pressure

Colburn Analogy

Colburn Analogy

Schmidt Number (Sc)

momentum diffusivity/mass diffusion