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

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

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

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

Mechanical & Aerospace Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English (US)
Title of host publication	Fall Meeting of the Eastern States Section of the Combustion Institute 2009
Publisher	Combustion Institute
Pages	752-757
Number of pages	6
ISBN (Electronic)	9781615676682
State	Published - 2009
Event	Fall Meeting of the Eastern States Section of the Combustion Institute 2009 - College Park, United States Duration: Oct 18 2009 → Oct 21 2009

Publication series

Name	Fall Meeting of the Eastern States Section of the Combustion Institute 2009

Other

Other	Fall Meeting of the Eastern States Section of the Combustion Institute 2009
Country/Territory	United States
City	College Park
Period	10/18/09 → 10/21/09

All Science Journal Classification (ASJC) codes

General Chemical Engineering
Mechanical Engineering
Physical and Theoretical Chemistry

Cite this

@inproceedings{d062c55786f14b11b7c37261cd1cabf2,

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

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.",

author = "Michael, {J. B.} and A. Dogariu and Shneider, {M. N.} and Miles, {R. B.}",

note = "Publisher Copyright: Copyright {\textcopyright} 2009 by The Combustion Institute.; Fall Meeting of the Eastern States Section of the Combustion Institute 2009 ; Conference date: 18-10-2009 Through 21-10-2009",

year = "2009",

language = "English (US)",

series = "Fall Meeting of the Eastern States Section of the Combustion Institute 2009",

publisher = "Combustion Institute",

pages = "752--757",

booktitle = "Fall Meeting of the Eastern States Section of the Combustion Institute 2009",

}

Michael, JB, Dogariu, A , Shneider, MN & Miles, RB 2009, Laser-initiated, microwave driven ignition in methane/air mixtures. in Fall Meeting of the Eastern States Section of the Combustion Institute 2009. Fall Meeting of the Eastern States Section of the Combustion Institute 2009, Combustion Institute, pp. 752-757, Fall Meeting of the Eastern States Section of the Combustion Institute 2009, College Park, United States, 10/18/09.

Laser-initiated, microwave driven ignition in methane/air mixtures. / Michael, J. B.; Dogariu, A.; Shneider, M. N. et al.
Fall Meeting of the Eastern States Section of the Combustion Institute 2009. Combustion Institute, 2009. p. 752-757 (Fall Meeting of the Eastern States Section of the Combustion Institute 2009).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Laser-initiated, microwave driven ignition in methane/air mixtures

AU - Michael, J. B.

AU - Dogariu, A.

AU - Shneider, M. N.

AU - Miles, R. B.

PY - 2009

Y1 - 2009

N2 - 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.

AB - 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.

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M3 - Conference contribution

AN - SCOPUS:84946544816

T3 - Fall Meeting of the Eastern States Section of the Combustion Institute 2009

SP - 752

EP - 757

BT - Fall Meeting of the Eastern States Section of the Combustion Institute 2009

PB - Combustion Institute

T2 - Fall Meeting of the Eastern States Section of the Combustion Institute 2009

Y2 - 18 October 2009 through 21 October 2009

ER -

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

Abstract

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All Science Journal Classification (ASJC) codes

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