On critical conditions for detonation initiation by shock reflection from obstacles
Abstract
A series of experiments supported by numerical simulations are reported on the interaction between a planar incident shock and a single obstacle. The test mixtures used were stoichiometric hydrogen and oxygen diluted with either argon or nitrogen at sub-atmospheric pressures. The main aim of the study was to determine the conditions under which a reflected detonation was generated. Observed critical conditions are compared with a simple predictive criterion based on the ratio of auto-ignition delay time behind an ideal reflected shock to the acoustic transit time across the face of the obstacle.
- Publication:
-
Shock Waves
- Pub Date:
- 2002
- DOI:
- 10.1007/s00193-002-0148-z
- Bibcode:
- 2002ShWav..12..111T
- Keywords:
-
- Key words: Shock reflection;
- Initiation;
- Detonation