Visualization and parametric study of reaction propagation in meso-scale tubes

Chan Yu Wang, Jun Kai Wang, Ming Hsun Wu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Reaction propagation of ethylene/oxygen and methane/oxygen mixtures in capillary tubes of 1 and 2 mm in diameters with initial pressure and temperature at ambient condition were experimentally visualized and analysed using high speed cinematography. Deflagrative flame was initiated in middle of the smooth tube, and the reaction fronts accelerated as they propagated towards the exits in the opposite directions. Lengths of the tubes investigated ranged from 0.4 to 1 m (one side), and deflagration-to-detonation transitions were observed for equivalence ratios between 0.5 and 3. The visible reaction front propagates at speeds approach Chapman-Jouguet speed for ethylene/oxygen mixture in the 1 mm and 2 mm tubes. An overshoot in propagation velocity was found during transition process. For leaner and richer mixtures beyond the detonation limits, steady deflagration wave propagation was observed. Reaction propagation in methane/oxygen mixture was also investigated. Several near-limit propagation modes were found.

Original languageEnglish
Title of host publicationProceedings of the ASME International Mechanical Engineering Congress and Exposition 2009, IMECE 2009
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages265-271
Number of pages7
ISBN (Print)9780791843765
DOIs
Publication statusPublished - 2010 Jan 1
Event2009 ASME International Mechanical Engineering Congress and Exposition, IMECE2009 - Lake Buena Vista, FL, United States
Duration: 2009 Nov 132009 Nov 19

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings
Volume3

Other

Other2009 ASME International Mechanical Engineering Congress and Exposition, IMECE2009
CountryUnited States
CityLake Buena Vista, FL
Period09-11-1309-11-19

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

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  • Cite this

    Wang, C. Y., Wang, J. K., & Wu, M. H. (2010). Visualization and parametric study of reaction propagation in meso-scale tubes. In Proceedings of the ASME International Mechanical Engineering Congress and Exposition 2009, IMECE 2009 (pp. 265-271). (ASME International Mechanical Engineering Congress and Exposition, Proceedings; Vol. 3). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/IMECE2009-12516