The evolution and cellular structure of a detonation subsequent to a head-on interaction with a shock wave

Barbara B. Botros, Hoi Dick Ng, Yu Jian Zhu, Yiguang Ju, John H.S. Lee

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

This paper analyzes the results of a head-on collision between a detonation and a planar shock wave. The evolution of the detonation cellular structure subsequent to the frontal collision was examined through smoked foil experiments. It is shown that a large reduction in cell size is observed following the frontal collision, and that the detonation cell widths are correlated well with the chemical kinetic calculations from the ZND model. From chemical kinetic calculations, the density increase caused by shock compression appears to be the main factor leading to the significant reduction in cell size. It was found that depending on the initial conditions, the transition to the final cellular pattern can be either smooth or spotty. This phenomenon appears to be equivalent to Oppenheim's strong and mild reflected shock ignition experiments. The difference between these two transitions is, however, more related to the stability of the incident detonation and the strength of the perturbation generated by the incident shock.

Original languageEnglish (US)
Pages (from-to)573-580
Number of pages8
JournalCombustion and Flame
Volume151
Issue number4
DOIs
StatePublished - Dec 1 2007

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Physics and Astronomy(all)

Keywords

  • Cellular structure
  • Chemical kinetics
  • Detonation
  • Frontal collision
  • Shock wave

Fingerprint Dive into the research topics of 'The evolution and cellular structure of a detonation subsequent to a head-on interaction with a shock wave'. Together they form a unique fingerprint.

  • Cite this