采用离心喷嘴的单凹腔驻涡燃烧室点火与贫熄特性

推进技术 ›› 2015, Vol. 36 ›› Issue (4): 601-607.

采用离心喷嘴的单凹腔驻涡燃烧室点火与贫熄特性

吴泽俊,何小民,洪亮,薛冲,金义

南京航空航天大学能源与动力学院 /江苏省航空动力系统重点实验室，江苏南京 210016,南京航空航天大学能源与动力学院 /江苏省航空动力系统重点实验室，江苏南京 210016,南京航空航天大学能源与动力学院 /江苏省航空动力系统重点实验室，江苏南京 210016,南京航空航天大学能源与动力学院 /江苏省航空动力系统重点实验室，江苏南京 210016,南京航空航天大学能源与动力学院 /江苏省航空动力系统重点实验室，江苏南京 210016

发布日期:2021-08-15
作者简介:吴泽俊( 1984—)，男，博士生，研究领域为燃烧理论与燃烧术。 E-mail:wzj@nuaa.edu.cn室技。
基金资助:
江苏省普通高校研究生科研创新计划资助项目( CXLX12_0167)

Ignition and Lean Blowout Characteristics of a Single-Cavity

Jiangsu Province Key Laboratory of Aerospace Power Systems，College of Energy and Power Engineering， Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China,Jiangsu Province Key Laboratory of Aerospace Power Systems，College of Energy and Power Engineering， Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China,Jiangsu Province Key Laboratory of Aerospace Power Systems，College of Energy and Power Engineering， Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China,Jiangsu Province Key Laboratory of Aerospace Power Systems，College of Energy and Power Engineering， Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China and Jiangsu Province Key Laboratory of Aerospace Power Systems，College of Energy and Power Engineering， Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China

Published:2021-08-15

摘要/Abstract

摘要： 为了研究单凹腔驻涡燃烧室的点火和贫油熄火特性，设计了一个带扩压器和内外机匣的单凹腔驻涡燃烧室矩形试验件，采用试验研究和半经验分析相结合的方法对其点火和贫油熄火进行了研究。试验在常压状态下进行，采用 RP3航空煤油作为燃料，所用供油喷嘴为空心锥离心喷嘴，试验中的进口空气温度在 287～487K变化，进口空气流量在 0.2109～0.4219kg/s变化，对应进口马赫数从 0.15变化到 0.31。结果表明:单凹腔驻涡燃烧室的点火和贫油熄火油气比均随着燃烧室进口温度和进口流量的增加而减小，单凹腔驻涡燃烧室的点火油气比比贫油熄火油气比约大 50%。经过半经验分析，得到了影响单凹腔点火和熄火的综合参数A，该参数能够较好地解释和评价各种因素对贫油熄火的影响。

关键词: 单凹腔驻涡燃烧室；点火；贫油熄火；油气比；有效蒸发常数

Abstract: A rectangular single-cavity trapped vortex combustor(STVC)comprising casing and diffuser was designed，and ignition and lean blowout characteristic experiments were accomplished at atmospheric pressure， and semi-analytical results were obtained. Aviation kerosene RP3 was employed as fuel，and cone-shaped pres. sure swirl atomizer was used for fuel supply. In all the operating conditions，inlet temperature of the combustor varies from 287K up to 487K，and inlet air mass flow rate ranges from 0.2109kg/s up to 0.4219kg/s，the corre. sponding Mach number ranges from 0.15 to 0.31. It is revealed that the fuel air ratios of ignition and lean blowoutdecrease while inlet temperature and air mass flow rate increase，and the former is approximately 50% more than the latter. A synthesized parameter，that affects ignition and lean blowout characteristics of the single-cavity trapped vortex combustor，is derived in a semi-empirical method. This parameter can well interpret and estimatethe effects of various factors on lean blowout.

Key words: Single-cavity trapped vortex combustor；Ignition；Lean blowout；Fuel air ratio；Effective evapo. ration constant

吴泽俊,何小民,洪亮,薛冲,金义. 采用离心喷嘴的单凹腔驻涡燃烧室点火与贫熄特性[J]. 推进技术, 2015, 36(4): 601-607.

WU Ze-jun,HE Xiao-min,HONG Liang,XUE Chong,JIN Yi. Ignition and Lean Blowout Characteristics of a Single-Cavity[J]. Journal of Propulsion Technology, 2015, 36(4): 601-607.

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