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ARTICLE
Heat transfer in a thin metal film subjected to the ultra-short laser pulse modeled by a nonlinear two-temperature model
1
Silesian University of Technology, Department of Computational Mechanics and Engineering, Gliwice, Poland
These authors had equal contribution to this work
Submission date: 2023-11-03
Final revision date: 2023-12-14
Acceptance date: 1023-12-18
Online publication date: 2024-04-18
Publication date: 2024-04-30
Corresponding author
Jolanta Dziatkiewicz
Department of Computational Mechanics and Engineering, Silesian University of Technology, Konarskiego 18A, 44-100, Gliwice, Poland
Department of Computational Mechanics and Engineering, Silesian University of Technology, Konarskiego 18A, 44-100, Gliwice, Poland
Journal of Theoretical and Applied Mechanics 2024;62(2):403-413
KEYWORDS
TOPICS
ABSTRACT
The heating of a thin metal film subjected to the ultra-short laser pulse is presented. Mathe-
matical description of this process is based on the system of equations describing the electron
and lattice temperatures and dependences between intensity of heat fluxes and temperature
gradients supplemented by appropriate boundary and initial conditions. In this approach,
a system of four equations needs to be solved. In this paper, another method of solution of
the above formulated problem is proposed. Using appropriate mathematical manipulations,
instead of four equations, two equations describing the lattice and electron temperature dis-
tributions are obtained. This system of two equations is solved using an implicit scheme of
the finite difference method. The results obtained using both approaches were compared.
They were almost identical, which confirms the correctness of the proposed method.
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