Thermal Diffusivity

The ratio of heat conducted to the heat stored per unit volume.

where
D = thermal diffusivity [m2s-1]
k = thermal conductivity [Wm-1K-1]
ρ = density [kgm-3]
Cp = specific heat at constant pressure [Jkg-1K-1]

See also: Density, Specific Heat Capacity, Thermal Conduction.

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Subjects: Thermodynamics