Selected Dimensionless Groups of Heat and Mass Transfer

Dimensionless mass and heat transfer numbers and their descriptions

22 cards   |   Total Attempts: 188
  

Cards In This Set

Front Back
Biot Number - Bi
Ratio of the internal thermal resistance of a solid to the boundary layer thermal resistance
Mass Transfer Biot Number - Bi(m)
Ratio of the internal species transfer resistance to the boundary layer species transfer resistance
Bond Number - Bo
Ratio of gravitational and surface tension forces
Coefficient of Friction - C(f)
Dimensionless surface shear stress
Eckert Number - Ec
Kinetic energy of the flow relative to the boundary layer enthalpy difference
Fourier Number - Fo
Ratio of the heat conduction rate to the rate of thermal energy storage in a solid. Dimensionless time
Mass Transfer Fourier Number - Fo(m)
Ratio of the species diffusion rate to the rate of species storage
Friction Factor - f
Dimensionless pressure drop for internal flow
Grashof Number - Gr(L)
Measure of the ratio of buoyancy forces to viscous forces
Colburn j Factor - j(H)
Dimensionless heat transfer coefficient
Colburn j Factor - j(m)
Dimensionless mass transfer coefficient
Jakob Number - Ja
Ration of sensible to latent energy absorbed during the liquid-vapor phase change
Lewis Number - Le
Ratio of thermal and mass diffusivities
Nusselt Number - Nu(L)
Rati of convection to pure conduction heat transfer
Peclet Number - Pe(L)
Ratio of advection to conduction heat transfer rates