Dinâmica de transmissão de calor por condução na interface de barras compostas

Abstract

This work was intended to present a software for numerically solve subproblems derived from the classic heat conduction problem (using the Fourier’s law), applied to multimaterial bars, for which explicit and implicit finite difference methods were used. For such objective, the bar’s lenght was parametrized and one considered bars formed by two and three parts (respectively for use with implicit and explicit methods), after what the temperature function was observed. The featured software has given results showing a discontinuity at the interface points of the bars, due to differences in scale of the thermal diffusivity coeficients of each material forming them. However, in bars formed by materials with this coeficient similar, it was possible to see that the temperature evolution was smooth. Hence, one can realize that both methods were not so efficient when dealing with multimaterial bars with very different thermal diffusivity coeficients.