Posted by Farant on .
Derive the general heat conduction equation in cylindrical coordinates by applying the first law to the volume element.
Heat Transfer -
For transient situations with no heat generation and azimuthal symmetry, see the derivation of Eq. 2-28 at
In this case, T depends upon time (t) and r only.
There is a more complicated equation where there are variations with length z and aximutual angle phi.