Laser-initiated, microwave driven ignition in methane/air mixtures

J. B. Michael, A. Dogariu, M. N. Shneider, R. B. Miles

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

Abstract

We have demonstrated the use of a laser pulse for seed ionization and a microwave pulse for the heating of the seed to achieve ignition in atmospheric pressure methane/air mixtures. A 200 ps, 780 nm pulse with energy of 3 mJ in combination with a synchronized 2 μs, 50 mJ, 3 GHz microwave pulse achieved ignition in a lean methane/air mixture with an equivalence ratio of 0.8. Microwave enhancement of the laser ionization spot was observed by shadowgraph illumination to track the evolution in time and investigate the importance of pulse timing, focusing, and pulse energies. In addition, we have demonstrated multi-point ignition indicating that only a small fraction of the total microwave pulse is coupled into a single ignition point.

Original languageEnglish (US)
Title of host publicationFall Meeting of the Eastern States Section of the Combustion Institute 2009
PublisherCombustion Institute
Pages752-757
Number of pages6
ISBN (Electronic)9781615676682
StatePublished - Jan 1 2009
EventFall Meeting of the Eastern States Section of the Combustion Institute 2009 - College Park, United States
Duration: Oct 18 2009Oct 21 2009

Publication series

NameFall Meeting of the Eastern States Section of the Combustion Institute 2009

Other

OtherFall Meeting of the Eastern States Section of the Combustion Institute 2009
CountryUnited States
CityCollege Park
Period10/18/0910/21/09

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Mechanical Engineering
  • Physical and Theoretical Chemistry

Fingerprint Dive into the research topics of 'Laser-initiated, microwave driven ignition in methane/air mixtures'. Together they form a unique fingerprint.

  • Cite this

    Michael, J. B., Dogariu, A., Shneider, M. N., & Miles, R. B. (2009). Laser-initiated, microwave driven ignition in methane/air mixtures. In Fall Meeting of the Eastern States Section of the Combustion Institute 2009 (pp. 752-757). (Fall Meeting of the Eastern States Section of the Combustion Institute 2009). Combustion Institute.