典型文献
Effects of swirler position on flame response and combustion instabilities
文献摘要：
This study is concerned with the experimental and theoretical investigation of the com-bustion instabilities in a premixed swirl combustor.It is focused on the effects of the swirl mixing distance on the intrinsic thermoacoustic mode.The swirler as an origin of the swirling flow is also the source of the flow disturbance,which has effects on the flame response.The location of the swir-ler is varied in the experiment to study the effect on combustion instabilities and flame transfer func-tions.A low order model is built to analyze the thermoacoustic instabilities of the combustion system.The experimental results show that the ITA switches from an unstable state to a stable state as the swirl mixing distance changes with an increment of 15 mm;while the instability of the quarter-wave mode is not varied.The measured Flame Transfer Functions (FTFs) show that the gain curves of the frequency-dependent FTFs seem to be stretched or compressed with the modu-lation of the swirler position,which has effects on frequencies and instabilities of thermoacoustic modes.With the low order model,the effects of flame response on combustion instabilities are ana-lyzed and the flame dominant nature of the ITA mode is confirmed.
文献关键词：
中图分类号：
作者姓名：
Liangliang XU;Jianyi ZHENG;Guoqing WANG;Lei LI;Fei QI
作者机构：
School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 210096,China;King Abdullah University of Science and Technology,Thuwal,Saudi Arabia
文献出处：
引用格式：
[1]Liangliang XU;Jianyi ZHENG;Guoqing WANG;Lei LI;Fei QI-.Effects of swirler position on flame response and combustion instabilities)[J].中国航空学报（英文版）,2022(03):345-355
A类：
swirler,swir,FTFs
B类：
Effects,position,flame,response,combustion,instabilities,This,study,concerned,experimental,theoretical,investigation,premixed,combustor,It,focused,effects,mixing,distance,intrinsic,thermoacoustic,origin,swirling,flow,also,source,disturbance,which,has,location,varied,transfer,func,order,model,built,analyze,system,results,show,that,ITA,switches,from,unstable,state,changes,increment,while,instability,quarter,wave,not,measured,Flame,Transfer,Functions,gain,curves,frequency,dependent,seem,be,stretched,compressed,modu,lation,frequencies,modes,With,are,lyzed,dominant,nature,confirmed
AB值：
0.420375
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