Determination of thermal properties for hyperbolic heat transport using a frequency-modulated excitation source

摘要: Abstract The hyperbolic Cattaneo–Vernotte equation has been proposed as an alternative to generalize the Fourier law of heat transfer. determination thermal properties under approach is a subject research that deserves extensive analysis. development new methodologies detect effects and measure scarce. One most powerful techniques have shown provide useful results consists in exciting physical system using modulated excitation. In this paper transfer induced by kind sources studied, through formed semi-infinite layer contact with finite one. It there exist frequency ranges which real imaginary part temperature exhibit characteristic strong oscillations. When effusivities layers are quite different, simple analytical expressions for values maxima minima oscillations well frequencies at they occur obtained. These were used establish methodology determine relaxation time additional layer. theoretical basis thermal-wave resonator also derived.