Plasma Actuator Control of a Lifted Ethane Turbulent Jet Diffusion Flame

A dielectric barrier discharge (DBD) actuator is used to stabilize the base of a lifted ethane turbulent jet diffusion flame by modifying the coflow velocity field. The velocity field and flame base are measured by particle image velocimetry and unfiltered flame chemiluminescence imaging, respective...

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Bibliographic Details
Published in:IEEE transactions on plasma science 2013-12, Vol.41 (12), p.3293-3298
Main Authors: Seong-kyun Im, Moon Soo Bak, Mungal, Mark Godfrey, Cappelli, Mark A.
Format: Article
Language:English
Subjects:
Actuators
Discharges (electric)
Electrodes
Fires
Fuels
Imaging
Plasma application
Plasmas
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Summary:A dielectric barrier discharge (DBD) actuator is used to stabilize the base of a lifted ethane turbulent jet diffusion flame by modifying the coflow velocity field. The velocity field and flame base are measured by particle image velocimetry and unfiltered flame chemiluminescence imaging, respectively. An axisymmetric DBD actuator, integrated onto the nozzle body and driven by 8 kHz, 10-12-kV peak-to-peak sinusoidal voltage, generates the directional flow that opposes the coflow that surrounds the jet nozzle. This flow induces a separation bubble that retards and diverts the surrounding fluid further away from the fuel jet. The turbulent jet diffusion flame liftoff height is found to be significantly reduced by this plasma actuation.
ISSN:0093-3813
1939-9375
DOI:10.1109/TPS.2013.2277722