Theoretical study of the transient shock wave propagation during laser ablation

Zhaoyan Zhang, George Gogos

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Laser ablation consists of three coupled processes: i) heat conduction within the solid, ii) flow through a discontinuity layer (evaporation wave) attached to the solid surface, and iii) shock wave expansion of the laser induced vapor. In this paper, a one-dimensional solution for all three coupled processes is presented. The heat conduction and the evaporation wave are solved numerically. The shock wave expansion of the laser induced vapor, however, is solved analytically for the first time. Analytical solutions for the classic Riemann problem have been employed to solve the transient propagation of the strong shock wave. This model provides a sound theoretical basis for the analysis of the laser ablation process. The effects of the laser intensity, back temperature and back pressure are analyzed. The temperature, pressure, density and velocity of the laser induced vapor are calculated and the results are discussed.

Original languageEnglish (US)
Title of host publicationProceedings of the 003 ASME Summer Heat Transfer Conference, Volume 1
PublisherAmerican Society of Mechanical Engineers
Pages533-539
Number of pages7
ISBN (Print)0791836932, 9780791836934
DOIs
StatePublished - 2003
Event2003 ASME Summer Heat Transfer Conference (HT2003) - Las Vegas, NV, United States
Duration: Jul 21 2003Jul 23 2003

Publication series

NameProceedings of the ASME Summer Heat Transfer Conference
Volume2003

Conference

Conference2003 ASME Summer Heat Transfer Conference (HT2003)
CountryUnited States
CityLas Vegas, NV
Period7/21/037/23/03

ASJC Scopus subject areas

  • Engineering(all)

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