TY - JOUR
T1 - Laser diagnostic imaging of energetically enhanced flames using direct microwave plasma coupling
AU - Rao, Xing
AU - Hammack, Stephen
AU - Carter, Campbell
AU - Lee, Tonghun
N1 - Funding Information:
Manuscript received December 1, 2010; revised April 19, 2011; accepted April 21, 2011. Date of publication May 19, 2011; date of current version November 9, 2011. This work was supported by AFOSR under Rewards FA9550-09-1-0282 and FA9550-10-1-0556. X. Rao is with the Facility for Rare Isotope Beams, Michigan State University, East Lansing, MI 48824 USA (e-mail: [email protected]). S. Hammack and T. Lee are with the Department of Mechanical Engineering, Michigan State University, East Lansing, MI 48824 USA (e-mail: [email protected]; [email protected]). C. Carter is with the U.S. Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-5543 USA (e-mail: [email protected]). Digital Object Identifier 10.1109/TPS.2011.2148180 Fig. 1. (Top) Single-shot OH PLIF images, (middle) averaged Rayleigh scattering temperature fields, and (bottom) photographs at a total flow rate of 15 LPM of equivalence ratio of 1.0 for power levels from 60 to 130 W in the premixed mode.
PY - 2011/11
Y1 - 2011/11
N2 - Quantitative images of temperature and hydroxyl (OH) concentrations are presented in plasma-enhanced flames, where a nonthermal microwave plasma discharge is coupled directly with the reaction zone of the flame. The plasma jet is generated through a novel microwave (2.45 GHz) waveguide based a coaxial reactor system. Planar laser-induced fluorescence is used to generate the OH fields, and planar Rayleigh scattering thermometry is used for the temperature. Plasma-enhanced flames present new possibilities for ignition and flame holding under harsh operating conditions, including stabilization of combustion in hypersonic flame conditions.
AB - Quantitative images of temperature and hydroxyl (OH) concentrations are presented in plasma-enhanced flames, where a nonthermal microwave plasma discharge is coupled directly with the reaction zone of the flame. The plasma jet is generated through a novel microwave (2.45 GHz) waveguide based a coaxial reactor system. Planar laser-induced fluorescence is used to generate the OH fields, and planar Rayleigh scattering thermometry is used for the temperature. Plasma-enhanced flames present new possibilities for ignition and flame holding under harsh operating conditions, including stabilization of combustion in hypersonic flame conditions.
KW - Laser-induced fluorescence
KW - Rayleigh scattering
KW - nonequilibrium microwave plasma
KW - plasma-enhanced combustion
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U2 - 10.1109/TPS.2011.2148180
DO - 10.1109/TPS.2011.2148180
M3 - Article
AN - SCOPUS:81255149114
SN - 0093-3813
VL - 39
SP - 2354
EP - 2355
JO - IEEE Transactions on Plasma Science
JF - IEEE Transactions on Plasma Science
IS - 11 PART 1
M1 - 5771602
ER -