离心条件下后台阶贫油熄火特性

李林; 林宇震; 郭新华; 孙强

离心条件下后台阶贫油熄火特性

北京航空航天大学能源与动力工程学院航空发动机气动热力国家级重点实验室,北京 100191

计量
- 文章访问数: 1747
- HTML浏览量: 2
- PDF量: 13
- 被引次数: 0
出版历程
- 收稿日期: 2010-03-12
- 修回日期: 2010-09-21
- 刊出日期: 2011-04-28

Characteristics of lean blowout limit for backward step-stabilized flame with centrifugal force effect

National Key Laboratory of Science and Technology on Aero-Engine Aero-therodynamics, School of Jet Propulsion,Beijing University of Aeronautics and Astronautics, Beijing 100191,China

摘要

摘要: 利用气流通过弯管产生的离心效应来模拟高速旋转的工况,研究高位后台阶火焰稳定器的关键几何参数对液雾燃烧贫油熄火特性的影响.通过控制后台阶高度,台阶板长度,后台阶到上壁面的距离三个几何参数,考察它们对后台阶火焰稳定器贫油熄火特性的影响.试验得到的结果表明在离心条件下,后台阶高度和台阶板长度对贫油熄火特性的影响较大,随着后台阶高度和台阶板长度的增加,贫油熄火极限降低,范围拓宽;而后台阶到上壁面的距离对贫油熄火特性影响很小;对于同一个后台阶而言,随着离心力的增加,后台阶火焰稳定器的贫油熄火极限也降低,熄火范围拓宽.
- 弯曲管道 /
- 离心力 /
- 后台阶 /
- 贫油熄火 /
- 火焰稳定
Abstract: Using the centrifugal force effect of a whirl flow through a curved pipe to simulate the working conditions in the rotor combustion system,this thesis investigated the effect of the geometric parameters on lean blowout limit of spray combustion for the backward step flame holder.On the basis of a curved flow channel experiment rig,a backward step flame holder was designed with variable geometric parameters.The geometric parameters include:the height,length and distance between backward step and wall surface.The effect of these three geometric parameters on the lean blowout limit of spray combustion was investigated.Test results indicate that,the height and length have great effect on flame blowout limit.With the increase of the height and length,the lean blowout limit decreases;but the distance between backward step and wall surface has little effect on flame blowout limit.For each backward step flame holder,while centrifugal force effect increases,the flame lean blowout limit is reduced and flameout range is broadened.This research work has laid a foundation for investigation of spray combustion on the rotor combustion system.
- curved pipe /
- centrifugal force /
- backward step /
- lean blowout limit /

HTML

参考文献(12)

[1]	Lewis G D, Smith C E.Investigation of centrifugal force and Reynolds number effects on combustion processes .F44620-73C-0061,1975.
[2]	Ramgen Power Systems.Development and testing of a pre-prototype Mach 2 Ramgen engine final report .DE-FC26-00NT40915,DOE,2001.
[3]	Lapsa A P,Dahm W J A.Hyperacceleration effects on turbulent combustion in premixed step-stabilized flames[J].Proceedings of the Combustion Institute,2009,32(2):1731-1738.
[4]	汪志强.弯曲燃烧室强离心力条件下的火焰稳定研究 .北京:北京航空航天大学,2007. WANG Zhiqiang.Research on flame-holding in a curved combustor under high centrifugal force conditions .Beijing:Beijing University of Aeronautics and Astronautics,2007.(in Chinese)
[5]	Lefebvre A H.Gas turbine combustion[M].2nd ed.Phiadlphia,PA:Talor & Francis,1999.
[6]	Mellor M.Design of modern gas turbine combustors[M].New York: Academic Press,1990.
[7]	Malecki R E,Rhie C M.Application of an advanced CFD-based analysis system to the PW6000 combustor to optimize exit temperature distribution Part Ⅰ:descripition and validation of the analysis tool .ASME Paper 2001-GT-0062,2001.
[8]	Sivaramakrishna G, Muthuveerappan N,Shankar V.CFD modeling of the aero gas turbine combustor .ASME Paper 2001-GT-0064,2001.
[9]	王小华,樊洪明,何钟怡.后台阶流动的数值模拟[J].计算力学学报,2003,20(3):361-365. WANG Xiaohua,FAN Hongming,HE Zhongyi.Numerical simulation of backward facing step flow[J].Chinese Journal of Computational Mechanics,2003,20(3):361-365.(in Chinese)
[10]	安帅,林宇震,张弛,等.离心力场下V型火焰稳定器火焰稳定性的研究[J].航空动力学报,2009,24(5):1011-1015. AN Shuai,LIN Yuzhen,ZHANG Chi,et al.Characterization of flame stabilization for V-gutter in centrifugal force field[J].Journal of Aerospace Power,2009,24(5):1011-1015.(in Chinese)
[11]	郭新华,林宇震,刘高恩,等.旋转燃烧准则数的确定 //中国航空学会第十四届燃烧与传热传质学术交流会.沈阳:中国航空学会,2007:444-451.
[12]	林宇震,许全宏,刘高恩.燃气轮机燃烧室[M].北京:国防工业出版社,2008.