3-D simulation model for gas-assisted laser cutting

M. S. Gross, I. Black, W. H. Müller

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)


To date the numerical simulation of gas-assisted laser cutting has successfully evaded rigorous treatment, mainly due to the complexity of the process, and the intrinsic highly dynamic behaviour of the melt pool and the presence of a shield gas jet. Contrary to the usual approach of adjusting simulation aims to fit the constraints of available hardware, the authors have utilised state-of-the-art parallel computing to tackle the problem in a comprehensive manner. This paper describes a full 3-D numerical model that includes an assist gas simulation for pressures up to and exceeding 18 bar, evaporation of the melt (using the kinetic theory approach), flow patterns in the melt/film pool and thermal stresses in the substrate. It also resolves the physical domain down to the micro-scale. Initial results are outlined and the current limits of and costs involved with using contemporary HPC platforms for enabling this software are identified.

Original languageEnglish
Pages (from-to)129-146
Number of pages18
JournalLasers in Engineering
Issue number1-2
Publication statusPublished - 2005


  • Laser cutting
  • Laser process modelling
  • Numerical simulation


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