HEAT TRANSFER IN DOMAIN OF METAL SUPERFICIAL LAYER SUBJECTED TO A STRONG EXTERNAL HEAT FLUX

Abstract. In the paper the thermal processes proceeding in a superficial layer of metal sub-jected to a strong external heat flux are analyzed. The different mathematical models of heat conduction in domain considered are taken into account. The first bases on the dual-phase-lag-equation describing a micro-scale heat transfer. DPLE contains the parameters corresponding to relaxation time τq and the normalization time τT. The second model considered here results from the assumption that τT = 0 and then DPLE reduces to the Cattaneo equation. The last one (τq = τT = 0) corresponds to the well known Fourier equation. Using the implicit scheme of FDM algorithm the numerical simulations have been done and the conclusions resulting from the results obtained have been formulated