Thermal Diffusivity

Written by Jerry Ratzlaff on . Posted in Thermodynamics

Thermal Diffusivity

Thermal diffusivity ( \(a\) ) 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)

\(\large{ k_t }\) = thermal conductivity constant

\(\large{ p }\) = density

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

Solve for:

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

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

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

 

Tags: Equations for Thermal Equations for Heat