Numerical and experimental study of a micro-blast wave generated by pulsed-laser beam focusing

Z. Jiang, K. Takayama, K. P.B. Moosad, O. Onodera, M. Sun

Research output: Contribution to journalArticlepeer-review

62 Citations (Scopus)

Abstract

This paper describes a numerical and experimental study of a micro-blast wave which is produced from the source of several tens microns in dia. and propagates in the length scale of a few centimeter in diameter. The micro-blast wave was generated by focusing a Nd:Glass pulsed-laser beam in ambient air. Its propagation and reflection were visualized by using double exposure holographic interferometry and simulated numerically using the dispersion-controlled scheme to solve the Euler and Navier-Stokes equations with initial conditions of a point-source explosion specified with the Taylor similarity law. Good agreement was obtained between numerical solutions and experimental results, and this spherical microblast wave was shown to be a handy model of blast waves created in large scale explosions.

Original languageEnglish
Pages (from-to)337-349
Number of pages13
JournalShock Waves
Volume8
Issue number6
DOIs
Publication statusPublished - 1998 Jan 1

Keywords

  • Blast-wave reflection
  • Flow visualization
  • Laser focusing
  • Micro-blast wave
  • Numerical simulation

ASJC Scopus subject areas

  • Mechanical Engineering
  • Physics and Astronomy(all)

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