Open Access

ARTICLE

Numerical Modeling of Short-Pulse Laser Interactions with Multi-Layered Thin Metal Films

E. Majchrzak¹, B. Mochnacki², A. L. Greer³, J. S. Suchy⁴
1 Silesian University of Technology, 44-100 Gliwice, Konarskiego 18a, Poland. e-mail: ewa.majchrzak@polsl.pl (corresponding author)
2 Czestochowa University of Technology, Dabrowskiego 71, 42-200 Czestochowa, Poland
3 University of Cambridge, Penbroke Street, Cambridge, CB23QZ, UK
4 AGH University of Science and Technology, 30-059 Cracow, Poland

Computer Modeling in Engineering & Sciences 2009, 41(2), 131-146. https://doi.org/10.3970/cmes.2009.041.131

Abstract

Multi-layered thin metal film subjected to a short-pulse laser heating is considered. Mathematical description of the process discussed bases on the equation in which there appear the relaxation time and the thermalization time (dual-phase-lag-model). In this study we develop a three level implicit finite difference scheme for numerical modelling of heat transfer in non-homogeneous metal film. At the interfaces an ideal contact between successive layers is assumed. At the stage of computations a solution of only one three-diagonal linear system corresponds to transition from time t to t + Δt. The mathematical model, numerical algorithm and examples of computations are presented in the paper.

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Keywords

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