Jet Flame Ignition in a Supersonic Crossflow Using a Pulsed Nonequilibrium Plasma Discharge

被引：26

作者：

Do, Hyungrok ^{[1
]}

Mungal, M. Godfrey ^{[1
,2
]}

Cappelli, Mark A. ^{[1
]}

机构：

[1] Stanford Univ, Dept Mech Engn, Stanford, CA 94305 USA

[2] Santa Clara Univ, Sch Engn, Santa Clara, CA 95053 USA

来源：

IEEE TRANSACTIONS ON PLASMA SCIENCE | 2008年 / 36卷 / 06期

关键词：

Plasma-assisted diffusion flame; pulsed plasma; supersonic flame ignition;

D O I：

10.1109/TPS.2008.2005986

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

A short-pulse repetitive discharge is used to ignite hydrogen jet flames in supersonic crossflows. Nonequilibrium plasma is produced by repetitive pulses of 7-kV peak voltage, 20-ns pulsewidth, and 50-kHz repetition rate. Sonic or subsonic hydrogen jets are injected into a pure-oxygen supersonic free-stream flow of Mach numbers M = 1.7-2.3. The fuel injection nozzles and electrodes are mounted Hush with the surface of a flat plate that is oriented to be parallel to the How to minimize stagnation pressure losses associated with generated shock waves. A configuration combining an upstream subsonic oblique jet and a downstream sonic transverse jet serves to provide an adequate flow condition for jet flame ignition. The flow pattern and shock waves induced by the dual hydrogen jets are characterized by Schlieren imaging. Planar-laser-induced fluorescence and emission spectroscopy are employed for imaging the distribution of OH radicals. The OH fluorescence image of the region in the vicinity of the discharge confirms jet flame ignition by the plasma.

引用

页码：2918 / 2923

页数：6

共 22 条

[1] Liquid-fuel aeroramp injector for scramjets [J].

Anderson, CD ;

Schetz, JA .

JOURNAL OF PROPULSION AND POWER, 2005, 21 (02) :371-374

[2] Ignition of ethylene-air and methane-air flows by low-temperature repetitively pulsed nanosecond discharge plasma [J].

Bao, Ainan ;

Utkin, Yurii G. ;

Keshav, Saurabh ;

Lou, Guofeng ;

Adamovich, Igor V. .

IEEE TRANSACTIONS ON PLASMA SCIENCE, 2007, 35 (06) :1628-1638

[3] Cavity flame-holders for ignition and flame stabilization in scramjets: An overview [J].

Ben-Yakar, A ;

Hanson, RK .

JOURNAL OF PROPULSION AND POWER, 2001, 17 (04) :869-877

[4]

BOEUF JP, 1996, SIGLO KINEMA SOFTWAR

[5] Propane-air mixture combustion assisted by MW discharge in a speedy airflow [J].

Esakov, Igor I. ;

Grachev, Lev P. ;

Khodataev, Kirill V. ;

Vinogradov, Viacheslav A. ;

Van Wie, David M. .

IEEE TRANSACTIONS ON PLASMA SCIENCE, 2006, 34 (06) :2497-2506

[6]

Fay JE, 2006, 44 AIAA AER SCI M EX

[7]

GOLDFELD MA, 2007, P 8 INT S EXP COMP A

[8] Mixing and combustion studies using cavity-based flameholders in a supersonic flow [J].

Gruber, MR ;

Donbar, JM ;

Carter, CD ;

Hsu, KY .

JOURNAL OF PROPULSION AND POWER, 2004, 20 (05) :769-778

[9]

Heltsley W. N, 2007, 43 AIAA ASME SAE ASE

[10]

HELTSLEY W. N., 2006, 42 AIAA ASME SAE ASE

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