Author: P. Enders 1
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  • 1 Zentralinstitut für Optik und Spektroskopie der Akademie der Wissenschaften der DDR Rudower Chaussee 6 1199 Berlin GDR
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It is well known that the imposing of boundary conditions (BC) at the outer sample boundaries leads to an infinite speed of propagation of heat. Although any finite temperature difference is propagated with a finite velocity, the temperature history at a given point does not in general reflect the correct layer sequence. In order to overcome this non-physical description, we treat two simple examples as Stefan problems (moving BC at the propagation front).