LAUSR

Abstract With the rapid development of ultrashort-pulse laser heating and nanomaterials in science and engineering, the research on non-Fourier models to predict the anomalous heat conduction has attracted more and more attention. Among the existing non-Fourier models, the dual-phase-lag model can provide the best performance and it is more suitable for a short duration of heating. Considering the complexity of the equation, an efficient and accurate numerical method is proposed and applied to the analysis of the non-Fourier problems with complex geometry. The Cattaneo-Vernotte model and the dual-phase-lag model are selected and analyzed by the proposed method in the process of laser heating. Numerical simulations are made conducted for 1-D, 2-D, and 3-D problems in single-phase media exposed to laser pulses. The numerical results represent that the proposed method is accurate and stable to predict the thermal behavior of the plate irradiated by laser and other non-Fourier heat transfer problems.