Effect of pilot strutures on smoke emissions in the TeLESS Ⅱ combustor
-
摘要: 对不同预燃级结构的TeLESS Ⅱ燃烧室冒烟排放性能进行了研究。通过燃气分析试验方法分别考察了预膜空气雾化喷嘴和离心喷射空气雾化喷嘴在预燃级单独工作和主预燃级同时工作时的冒烟排放。结果表明在预燃级单独工作时,预燃级结构对冒烟排放性能影响较大,而在主预燃级同时工作时影响较小。通过数值模拟对两种预燃级结构在预燃级单独工作时的冒烟排放差异进行了分析,发现预燃级结构改变了燃油在主燃区内的分布,两种方案在主燃区内生成的碳烟前驱物乙炔质量分数和分布位置存在明显差异,最终导致燃烧室出口冒烟排放不同。
-
关键词:
- TeLESS Ⅱ燃烧室 /
- 预膜空气雾化 /
- 离心喷射空气雾化 /
- 冒烟排放 /
- 碳烟数值模拟
Abstract: The effects of different pilot structures on smoke emissions of TeLESSⅡ combustor were investigated. Smoke emissions of prefilming airblast atomizer and airblast simplex atomizer were tested through gas analysis method under pilot fueled mode and pilot-main fueled mode. The results indicated that the pilot structures had a great influence on the smoke emissions under pilot fueled mode, but less influence under pilot-main fueled mode. Numerical simulation was adopted to analyze different smoke emission performances with two pilot structures under pilot fueled mode. The simulation results show that the different pilot structures change the distribution of fuel in the main combustion zone, leading to significant differences in the mass fraction and distribution position of smoke precursor acetylene and different smoke emissions of combustor outlet. -
[1] 张弛,林宇震,徐华胜,等.民用航空发动机低排放燃烧室技术发展现状及水平[J].航空学报,2014,35(2):332-350.ZHANG Chi,LIN Yuzhen,XU Huasheng,et al.Development status and level of low emissions combustor technologies for civil aero-engine[J].Acta Aeronautica et Astronautica Sinica,2014,35(2):332-350.(in Chinese) [2] 徐华胜,邓远灏,马存祥.民用航空发动机低排放燃烧室技术[J].航空科学技术,2012(4):5-10.XU Huasheng,DENG Yuanhao,MA Cunxiang.Low emission combustor technology of civil aero engine[J].Aeronautical Science and Technology,2012(4):5-10.(in Chinese) [3] 彭云晖,许全宏,张弛,等.我国大飞机发动机低污染燃烧室发展考虑[R].北京:大型飞机关键技术高层论坛暨中国航空学会2007年学术年会,2007. [4] FOUST M,THOMSEN D,STICKLES R,et al.Development of the GE aviation low emissions TAPS combustor for next generation aircraft engines[R].AIAA-2012-0936,2012. [5] LI Lin,LIN Yuzhen,FU Zhenbo,et al.Emission characteristics of a model combustor for aero gas turbine application[J].Experimental Thermal and Fluid Science,2016,72:235-248. [6] 付镇柏,林宇震,张弛,等.中心分级燃烧室预燃级燃烧性能实验[J].航空动力学报,2015,30(1):46-52.FU Zhenbo,LIN Yuzhen,ZHANG Chi,et al.Experiment of combustion performance of internally-staged combustor pilot stage[J].Journal of Aerospace Power,2015,30(1):46-52.(in Chinese) [7] 付镇柏,林宇震,傅奇慧,等.不同台阶高度对中心分级燃烧室点火熄火性能的影响[J].航空动力学报,2014,29(5):1062-1070.FU Zhenbo,LIN Yuzhen,FU Qihui,et al.Effect of different step heights on ignition and blowout performance of internally-stage combustor[J].Journal of Aerospace Power,2014,29(5):1062-1070.(in Chinese) [8] 邹博文,许全宏,曹文宇,等.中心分级燃烧室耦合回流区贫油熄火机理[J].航空动力学报,2013,28(8):1759-1763.ZOU Bowen,XU Quanhong,CAO Wenyu,et al.Lean blowout mechanism of coupled recirculation zone in concentric staged combustor[J].Journal of Aerospace Power,2013,28(8):1759-1763.(in Chinese) [9] 秦皓,丁志磊,李海涛,等.LESS燃烧室非定常旋流流动[J].航空动力学报,2015,30(7):1566-1575.QIN Hao,DING Zhilei,LI Haitao,et al.Unsteady swirling flow in low emissions stirred swirls combustor[J].Journal of Aerospace Power,2015,30(7):1566-1575.(in Chinese) [10] LIU C,LIU F,YANG J,et al.Experimental investigation of spray and combustion performances of a fuel-staged low emission combustor:Part Ⅰ effects of main swirl angle[R].ASME Paper GT2016-56530,2016. [11] 刘强,索建秦,梁红侠,等.直混燃烧与LPP组合燃烧室数值研究[J].航空动力学报,2012,27(11):2448-2454.LIU Qiang,SUO Jianqin,LIANG Hongxia,et al.Numerical investigation of combustion of direct mixing combustion and LPP combustor[J].Journal of Aerospace Power,2012,27(11):2448-2454.(in Chinese) [12] 颜应文,徐榕,邓远灏,等.贫油预混预蒸发低污染燃烧室头部流场研究[J].航空学报,2012,33(6):965-976.YAN Yingwen,XU Rong,DENG Yuanhao,et al.Flow field study for head of lean premixed prevaporized low-emission combustor[J].Acta Aeronautica et Astronautica Sinica,2012,33(6):965-976.(in Chinese) [13] 颜应文,李红红,赵坚行,等.双环预混旋流低污染燃烧室数值研究[J].航空动力学报,2009,24(9):1923-1929.YAN Yingwen,LI Honghong,ZHAO Jianxing,et al.Numerical study of low emissions for twin annular premixing swirler combustor[J].Journal of Aerospace Power,2009,24(9):1923-1929.(in Chinese) [14] WANG B,ZHANG C,LIN Y,et al.Influence of main swirler vane angle on the ignition performance of TeLESS-Ⅱ combustor[J].Journal of Engineering for Gas Turbines and Power,2016,139(1):011501.1-011501.8. [15] WANG B,ZHANG C,HUI X,et al.Influence of sleeve angle on the LBO performance of TeLESS-Ⅱ combustor[R].AIAA-2016-4693,2016. [16] 王智勇,王波,韩啸,等.TeLESS Ⅱ低排放燃烧室预燃级设计对排放的影响[J].航空动力学报,2017,32(7):1561-1568.WANG Zhiyong,WANG Bo,HAN Xiao,et al.Effect of pilot design in the TeLESS Ⅱ low emission combustor on emission[J].Journal of Aerospace Power,2017,32(7):1561-1568.(in Chinese) [17] TAN J Y,BONATESTA F,NG H K,et al.Developments in computational fluid dynamics modelling of gasoline direct injection engine combustion and soot emission with chemical kinetic modelling[J].Applied Thermal Engineering,2016,107:936-959. [18] CHOO K H,LEE S,DENNEY R K,et al.A semi-empirical model to predict aircraft soot emission in rich zone of RQL Combustor[R].ASME Paper GT2015-43659,2015. [19] 王力军,杨海峰,孙远伟,等.某重型燃气轮机碳烟生成和排放研究[J].燃气轮机技术,2014(3):19-25.WANG Lijun,YANG Haifeng,SUN Yuanwei,et al.Study on formation and exhaust of soot for a heavy duty gas turbine[J].Gas Turbine Technology,2014(3):19-25.(in Chinese) [20] PECK J,LISCINSKY D S,YU Z,et al.Characterization of aviation soot emissions with a high-pressure gasturbine combustor rig[R].ASME Paper 2014-GT-25226,2014. [21] GEIGLE K P,ZERBS J,KHLER M,et al.Experimental analysis of soot formation and oxidation in a gas turbine model combustor using laser diagnostics[R].ASME Paper GT2011-45611,2011. [22] 王华芳,刘高恩,林宇震.高压燃烧室的冒烟测量[J].燃气涡轮试验与研究,2001,14(3):34-37.WANG Huafang,LIU Gaoen,LIN Yuzhen.Smoke measurement in high pressure combustor[J].Gas Turbine Experiment and Research,2001,14(3):34-37.(in Chinese) [23] 许全宏,林宇震,刘高恩,等.航空发动机高温升燃烧室贫油熄火及冒烟性能研究[J].航空动力学报,2005,20(4):636-640.XU Quanhong,LIN Yuzhen,LIU Gaoen,et al.Research on the high-temperature rise combustor lean blow-out and smoke emission characteristics[J].Journal of Aerospace Power,2005,20(4):636-640.(in Chinese) [24] 付镇柏,林宇震,张弛,等.中心分级燃烧室进场工况燃油分级方式试验研究[J].推进技术,2014,35(1):77-86.FU Zhenbo,LIN Yuzhen,ZHANG Chi,et al.Experimental investigation on fuel-staging mode of internally-staged combustor under approach condition[J].Journal of Propulsion Technology,2014,35(1):77-86.(in Chinese) [25] LEFEBVRE A H.Gas turbine combustion[M].London:Taylor and Francis Group,1998. [26] 郑亮.用激光诱导炽光法研究燃烧过程中的碳烟生成特性[D].北京:清华大学,2014.ZHENG Liang.Research on soot formation characteristics in combustion process using laser induced incandescence[D].Beijing:Tsinghua University,2014.(in Chinese) [27] MARTINI B.Development and assessment of a soot emissions model for aircraft gas turbine engines[D].Massachusetts,US:Massachusetts Institute of Technology,2008. [28] 邓远灏,颜应文,朱嘉伟,等.LPP低污染燃烧室两相喷雾燃烧数值研究[J].推进技术,2013,34(3):353-361.DENG Yuanhao,YAN Yingwen,ZHU Jiawei,et al.Numerical investigation of two phase spray combustion performance for LPP low-emission combustor[J].Journal of Propulsion Technology,2013,34(3):353-361.(in Chinese) [29] PENKO P,KUNDU K,SIOW Y,et al.A kinetic mechanism for calculation of pollutant species in Jet-A combustion[R].Las Vegas,US:Intersociety Energy Conversion Engineering Conference and Exhibit,2000. [30] BROOKES S J,MOSS J B.Predictions of soot and thermal radiation properties in confined turbulent jet diffusion flames[J].Combustion and Flame,1999,116(4):486-503. [31] BASHIRNEZHAD K,MOGHIMAN M,ZAHMATKESH I.Studies on soot formation and combustion in turbulent spray flames:modeling and experimental measurement[J].Iranian Journal of Chemistry and Chemical Engineering:International English Edition,2007,26(3):45-54.
点击查看大图
计量
- 文章访问数: 716
- HTML浏览量: 0
- PDF量: 509
- 被引次数: 0