Thermal Diffusivity

Written by Jerry Ratzlaff on . Posted in Thermodynamics

Thermal diffusivity, abbreviated as \(\alpha\) (Greek symbol alpha), is a measure of the transient thermal reaction of a material to a change in temperature.

Thermal Diffusivity formula

\(\large{ \alpha = \frac {k_t} {p \;  Q }     }\)         

Where:

\(\large{ \alpha }\)  (Greek symbol alpha) = thermal diffusity (heat transfer rate)

\(\large{ p }\) = density

\(\large{ Q }\) = specific heat capacity

\(\large{ k }\) = thermal conductivity

Solve for:

\(\large{ p = \frac {k} {\alpha \;  Q}     }\)

\(\large{ Q = \frac {k} {\alpha  \;   p}     }\)

\(\large{ k =   \alpha \;  p   \;  Q   }\)

 

Tags: Equations for Thermal Equations for Heat