贫油预混预蒸发燃烧室燃烧不稳定性试验研究
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摘要
为研究贫油预混预蒸发燃烧室燃烧不稳定性及其与污染排放之间的相互影响关系,针对一种中心分级的贫油预混预蒸发圆形单头部燃烧室为研究对象,在巡航状态、85%工况和100%工况(模拟)开展了圆形单头部燃烧室沿程压力脉动和燃烧性能的测量,分析研究了燃烧不稳定性的变化规律和影响因素以及与NO_x排放的相互关系。试验结果表明,燃油分配比例、头部当量比、燃烧室进口参数(压力、温度、速度等)都对燃烧不稳定性有影响,且影响程度不同;燃烧室压力脉动和NO_x排放指数均与火焰筒头部当量比呈正相关关系,两者在一定程度上协同变化。
For studying on combustion instability and pollutant of lean premixed pre-vaporized(LPP) combustor, an internally-stage lean premixed pre-vaporized(LPP) combustion chamber with single dome is studied on the pressure fluctuation along the combustor and NO_x emission at cruise, 85% state and 100% state. The factors and change rules of combustion instability and the relationship of NO_x and pressure fluctuation are analyzed.The results show that the ratio of fuel, equivalence ratio of the dome, inlet parameters(pressure, temperature,velocity etc.) all effect the combustion instability, and the influence is different. The NO_x emissions index and the pressure fluctuation have a positive correlation with the equivalence ratio of the dome, and the two have certain of synergistic variety.
For studying on combustion instability and pollutant of lean premixed pre-vaporized(LPP) combustor, an internally-stage lean premixed pre-vaporized(LPP) combustion chamber with single dome is studied on the pressure fluctuation along the combustor and NO_x emission at cruise, 85% state and 100% state. The factors and change rules of combustion instability and the relationship of NO_x and pressure fluctuation are analyzed.The results show that the ratio of fuel, equivalence ratio of the dome, inlet parameters(pressure, temperature,velocity etc.) all effect the combustion instability, and the influence is different. The NO_x emissions index and the pressure fluctuation have a positive correlation with the equivalence ratio of the dome, and the two have certain of synergistic variety.
引文
[1]张正国.未来航空低污染燃烧技术的发展途径[J].国际航空杂志(发动机和航电专辑),2010,(9).
[2]Schildmacher K U,Koch R,Bauer H J.Experimental Characterization of Premixed Flame Instabilities of a Model Gas Turbine Burner[J].Flow Turbulence and Combustion,2006,76:177-197.
[3]Polifke W,Fischer A,Sattelmayer T.Instability of a Premix Burner with Nonmonotonic Pressure Drop Characteristic[J].Engineering for Gas Turbines and Power,2003,125(1):20-27.
[4]Eckstein J,Freitag E,Hirsch C,et al.Experimental Study on the Role of Entropy Waves in Low-Frequency Oscillations in a RQL Combustor[J].Engineering for Gas Turbines and Power,2006,128(2):264-270.
[5]Coats C.Coherent Structures in Combustion[J].Progress in Energy and Combustion Science,1997,22:427-509.
[6]Zukoski E E,Smith D A.Combustion Instability Sustained by Unsteady Vortex Combustion[R].AIAA 85-1248.
[7]Poinsot T,Trouve R F,Veynante D P,et al.Vortex Driven Acoustically Coupled Combustion Instabilities[J].Fluid Mechanism,1987,177:262-292.
[8]Lawn C J,Evesque S,Polifke W.A Model for the Thermoacoustic Response of a Premixed Swirl Burner,Part I,Acoustic Aspects[J].Combustion Science and Technology,2004,176(8):1331-1358.
[9]Shih W P,Lee J G,Santavicca D A.Stability and Emissions Characteristics of a Lean Premixed Gas Turbine Combustor[J].Proceedings of the Combustion Institute,1996,25:2771-2778.
[10]Lieuwen T,Zinn B T.The Role of Equivalence Ratio Oscillations in Driving Combustion Instabilities in Low NOx Gas Turbines[J].Proceedings of the Combustion Institute,1998,27:1809-1816.
[11]Lieuwen T,Torres H,Johnson C,et al.A Mechanism of Combustion Instability in Lean Premixed Gas Turbine Combustors[J].Engineering for Gas Turbines and Power,2001,123(1):182-189.
[12]Clanet C,Searby G,Clavin P.Primary Acoustic Instability of Flames Propagating in Tubes:Cases of Spray and Premixed Gas Combustion[J].Fluid Mechanism,1999,385:157-197.
[13]Lubarsky E,Shcherbik D,Bibik A,et al.Active Control of Combustion Oscillations by Non-Coherent Fuel Flow Modulation[R].AIAA 2003-3180.
[14]John C,DeLaat.Active Combustion Control for Aircraft Gas-Turbine Engines-Experimental Results for an Advanced,Low-Emissions Combustor Prototype[R].AIAA2012-0783.
[15]Timothy C Lieuwen,Vigor Yang.Combustion Instabilities in Gas Turbine Engines:Operational Experience,Fundamental Mechanisms,Modeling[J].Progress in Astronautics and Aeronautics,2005,210.
[16]李文朝,林宇震,秦皓,等.典型工况下低排放燃烧室的压力振荡特性[J].航空发动机,2016,42(2):61-66.
[17]刘晓佩,崔玉峰,邢双喜,等.富氢燃料贫预混旋流燃烧热声振荡特性的实验研究[J].燃气轮机技术,2016,29(1):25-47.
[18]赵震,郭志辉,黄勇,等.模型燃烧室低频不稳定燃烧的初步探讨[J].航空动力学报,2003,18(6):803-807.
[19]杨甫江,郭志辉,任立磊,等.贫燃预混旋流火焰的燃烧不稳定性[J].燃烧科学与技术,2014,20(1):51-57.
[2]Schildmacher K U,Koch R,Bauer H J.Experimental Characterization of Premixed Flame Instabilities of a Model Gas Turbine Burner[J].Flow Turbulence and Combustion,2006,76:177-197.
[3]Polifke W,Fischer A,Sattelmayer T.Instability of a Premix Burner with Nonmonotonic Pressure Drop Characteristic[J].Engineering for Gas Turbines and Power,2003,125(1):20-27.
[4]Eckstein J,Freitag E,Hirsch C,et al.Experimental Study on the Role of Entropy Waves in Low-Frequency Oscillations in a RQL Combustor[J].Engineering for Gas Turbines and Power,2006,128(2):264-270.
[5]Coats C.Coherent Structures in Combustion[J].Progress in Energy and Combustion Science,1997,22:427-509.
[6]Zukoski E E,Smith D A.Combustion Instability Sustained by Unsteady Vortex Combustion[R].AIAA 85-1248.
[7]Poinsot T,Trouve R F,Veynante D P,et al.Vortex Driven Acoustically Coupled Combustion Instabilities[J].Fluid Mechanism,1987,177:262-292.
[8]Lawn C J,Evesque S,Polifke W.A Model for the Thermoacoustic Response of a Premixed Swirl Burner,Part I,Acoustic Aspects[J].Combustion Science and Technology,2004,176(8):1331-1358.
[9]Shih W P,Lee J G,Santavicca D A.Stability and Emissions Characteristics of a Lean Premixed Gas Turbine Combustor[J].Proceedings of the Combustion Institute,1996,25:2771-2778.
[10]Lieuwen T,Zinn B T.The Role of Equivalence Ratio Oscillations in Driving Combustion Instabilities in Low NOx Gas Turbines[J].Proceedings of the Combustion Institute,1998,27:1809-1816.
[11]Lieuwen T,Torres H,Johnson C,et al.A Mechanism of Combustion Instability in Lean Premixed Gas Turbine Combustors[J].Engineering for Gas Turbines and Power,2001,123(1):182-189.
[12]Clanet C,Searby G,Clavin P.Primary Acoustic Instability of Flames Propagating in Tubes:Cases of Spray and Premixed Gas Combustion[J].Fluid Mechanism,1999,385:157-197.
[13]Lubarsky E,Shcherbik D,Bibik A,et al.Active Control of Combustion Oscillations by Non-Coherent Fuel Flow Modulation[R].AIAA 2003-3180.
[14]John C,DeLaat.Active Combustion Control for Aircraft Gas-Turbine Engines-Experimental Results for an Advanced,Low-Emissions Combustor Prototype[R].AIAA2012-0783.
[15]Timothy C Lieuwen,Vigor Yang.Combustion Instabilities in Gas Turbine Engines:Operational Experience,Fundamental Mechanisms,Modeling[J].Progress in Astronautics and Aeronautics,2005,210.
[16]李文朝,林宇震,秦皓,等.典型工况下低排放燃烧室的压力振荡特性[J].航空发动机,2016,42(2):61-66.
[17]刘晓佩,崔玉峰,邢双喜,等.富氢燃料贫预混旋流燃烧热声振荡特性的实验研究[J].燃气轮机技术,2016,29(1):25-47.
[18]赵震,郭志辉,黄勇,等.模型燃烧室低频不稳定燃烧的初步探讨[J].航空动力学报,2003,18(6):803-807.
[19]杨甫江,郭志辉,任立磊,等.贫燃预混旋流火焰的燃烧不稳定性[J].燃烧科学与技术,2014,20(1):51-57.