Flow structures around an inclined substrate subjected to a supersonic impinging jet in laser cutting

Ching Chuan Mai, Jehnming Lin

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

In laser cutting, the flow structure around a substrate significantly affects the material removal rate, the cutting depth and the surface finish of the cutting front. In this paper, the phenomena of shock wave that is induced by a supersonic impinging jet emanating from a straight nozzle onto a substrate with varying inclined angles has been simulated numerically and visualized experimentally. The numerical model offers fairly good prediction in comparison with the experiments. It transpires that the angle of inclination has a significant and dramatic effect on the flow structure and that a large wall pressure with a steep gradient can be built up when the angle is large.

Original languageEnglish
Pages (from-to)479-486
Number of pages8
JournalOptics and Laser Technology
Volume34
Issue number6
DOIs
Publication statusPublished - 2002 Sep 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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