Plasma Actuator Control of a Lifted Ethane Turbulent Jet Diffusion Flame

Author

Seong-Kyun Im ; Moon Soo Bak ; Mungal, Mark Godfrey ; Cappelli, Mark A.

Author_Institution

Dept. of Mech. Eng., Stanford Univ., Stanford, CA, USA

Volume

41

Issue

12

fYear

2013

fDate

Dec. 2013

Firstpage

3293

Lastpage

3298

Abstract

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.

Keywords

actuators; chemically reactive flow; chemiluminescence; confined flow; flames; flow control; flow visualisation; jets; nozzles; organic compounds; plasma devices; turbulent diffusion; axisymmetric dielectric barrier discharge actuator; coflow velocity field; directional flow; frequency 8 kHz; fuel jet; jet nozzle; lifted ethane turbulent jet diffusion flame; nozzle body; particle image velocimetry; peak-to-peak sinusoidal voltage; plasma actuation; plasma actuator control; separation bubble; surrounding fluid; turbulent jet diffusion flame liftoff height; unfiltered flame chemiluminescence imaging; voltage 10 kV to 12 kV; Actuators; Discharges (electric); Electrodes; Fires; Fuels; Imaging; Plasmas; Plasma application;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2013.2277722

Filename

6583280