中国光学
中國光學
중국광학
CHINESE JOURNAL OF OPTICS
2011年
1期
41-45
,共5页
FIRSOV K N%KAZANTSEV S Yu%KONONOV I G%KOSSYI I A%TARASOVA N M%张来明%谢冀江
FIRSOV K N%KAZANTSEV S Yu%KONONOV I G%KOSSYI I A%TARASOVA N M%張來明%謝冀江
FIRSOV K N%KAZANTSEV S Yu%KONONOV I G%KOSSYI I A%TARASOVA N M%장래명%사기강
圆柱石英腔%燃烧引发方式%脉冲HF激光%CO2激光辐射%光谱特性%温度分布
圓柱石英腔%燃燒引髮方式%脈遲HF激光%CO2激光輻射%光譜特性%溫度分佈
원주석영강%연소인발방식%맥충HF격광%CO2격광복사%광보특성%온도분포
cylindrical quartz chamber%combustion initiation mode%pulse HF laser%CO2 laser radiation%spectral characteristics%temperature distribution
研究了封闭圆柱石英腔中化学计量CH4∶O2混合气的燃烧试验.使用了非定域脉冲HF激光触发和直接使用脉冲CO2激光器助燃两种引燃方法.第二种引燃方法是使用小剂量的可以强烈吸收脉冲CO2激光辐射的SF6来加热易燃混合气.研究了燃烧过程,并确定了燃烧辉光的谱线特征.试验表明,即使在小体积反应器中,固定数量反应气的快速激光加热也能够极大地加速燃烧进程并达到混合气燃烧的爆炸模式.得到了阈值情况下沿腔轴的初始温度分布.
研究瞭封閉圓柱石英腔中化學計量CH4∶O2混閤氣的燃燒試驗.使用瞭非定域脈遲HF激光觸髮和直接使用脈遲CO2激光器助燃兩種引燃方法.第二種引燃方法是使用小劑量的可以彊烈吸收脈遲CO2激光輻射的SF6來加熱易燃混閤氣.研究瞭燃燒過程,併確定瞭燃燒輝光的譜線特徵.試驗錶明,即使在小體積反應器中,固定數量反應氣的快速激光加熱也能夠極大地加速燃燒進程併達到混閤氣燃燒的爆炸模式.得到瞭閾值情況下沿腔軸的初始溫度分佈.
연구료봉폐원주석영강중화학계량CH4∶O2혼합기적연소시험.사용료비정역맥충HF격광촉발화직접사용맥충CO2격광기조연량충인연방법.제이충인연방법시사용소제량적가이강렬흡수맥충CO2격광복사적SF6래가열역연혼합기.연구료연소과정,병학정료연소휘광적보선특정.시험표명,즉사재소체적반응기중,고정수량반응기적쾌속격광가열야능구겁대지가속연소진정병체도혼합기연소적폭작모식.득도료역치정황하연강축적초시온도분포.
The ignition of stoichiometric CH4∶O2 mixture in a closed cylindrical quartz chamber was investigated. Two methods of combustion initiation were used: mixture ignition by freely localized pulse HF laser produced laser spark and mixture ignition by direct gas heating with the help of a pulse CO2 laser. In the latter case, the small admixture of SF6 strongly absorbing CO2 laser radiation was used for pulse heating of flammable mixture. Dynamics of combustion was investigated and the spectral characteristics of combustion glow were determined.The experiment demonstrates that rapid laser heating of a certain amount of reactive gas can significantly accelerate the process of inflammation and can realize the detonation mode of combustion gas mixture,even in a small reactor volume. Initial gas temperature distributions along chamber axis for threshold conditions are obtained.