Non-Fourier effects in the thermal protection against high-power ultra-fast laser pulses

Marcin Lenarczyk,Roman Domański,T Kujawa,Z Zapałowicz,A.A Stachel

doi:10.1051/e3sconf/20187003008

Abstract

In this paper the heat transfer process between laser beam and a solid body is investigated in the context of the protective materials, which can be used in the military, manufacturing or scientific fields. An ultra-fast high-power interaction regime is being considered. Non-Fourier effects are taken into account. To simulate effects, which can be of significance in the protective materials design, Cattaneo-Vernotte equation is being solved by means of MacCormack explicit second order numerical scheme. Selected results are discussed in detail.

Highlights

The rapid development in the laser technology requires an adequate description of the heat transfer processes that are associated with the laser-solid interactions
In the recent years a special attention has been given to the ultra-short laser pulses that are applied in the fields such as laser weapons, manufacturing or confinement fusion research [1,10,13]
Eq (1) is the classic Fourier equation and it assumes the infinite speed of heat propagation

Summary

Introduction

The rapid development in the laser technology requires an adequate description of the heat transfer processes that are associated with the laser-solid interactions. In the recent years a special attention has been given to the ultra-short laser pulses that are applied in the fields such as laser weapons, manufacturing or confinement fusion research [1,10,13]. A proper modelling of the ultra-fast interactions is crucial for obtaining reliable temperature fields in the considered problems [3,5]. The parameters of the lasers available commercially, used in the military or scientific fields such as pulse duration time and energy determine heat propagation regime which needs to be considered [4,8,9]. The investigation of the effects typical for the wave-like heat propagation and their influence on the temperature distribution in the given system are being studied

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Computational method

Simulation results

Findings

Summary and conclusions