
TY  - JOUR
A1  - Brown, A 
T1  - Diffusion of Heat From a Sphere to a Surrounding Medium
JF  - Australian Journal of Physics
JO  - Aust. J.  Phys.
Y1  - 1965
VL  - 18
IS  - 5
SP  - 483
EP  - 490
KW  - 
UR  - https://doi.org/10.1071/PH650483 
N2  - In a recent paper, Philip (1964) discussed a heat flow problem in which, as an idealization, spherical symmetry is assumed and the medium is regarded as composite, with a spherical core of one material embedded in a larger mass of a second material. One application in mind was to laccoliths, where an intrusion of igneous rock in sedimentary material can produce dome-shaped bulging at the surface. The idea of treating this as a problem involving spherical symmetry was put forward by Lovering (1935), who gave a solution for the case where the core and its surroundings are taken as uniform. In a subsequent paper, Lovering (1936) considered in more detail what variations in the thermal conductivity and diffusivity are to be expected. From the figures he quotes, a composite model should give a better approximation, though remaining a considerable simplification of the physical problem. 
ER  -

