航空替代燃料低温氧化实验与模型研究
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摘要
在射流搅拌反应器中开展了常压航空煤油替代燃料的低温(500~1100 K)氧化实验研究。利用气相色谱和气质联用仪测得了34个物种的摩尔分数曲线。通过研究芳烃和正癸烷间的耦合作用阐述了替代燃料低温区负温度系数效应对燃料燃烧特性的影响,揭示了实际航空燃料的低温自动点火机理。建立包括975物种和5920反应的亚琛替代燃料的动力学模型,并利用该模型准确地预测实际燃料燃烧的点火延迟等。实验和模拟得到的结果有助于理解燃气轮机低温点火过程。
The low temperature oxidation of neat 1,3,5-trimethylbenzene(TMB135) and ndecane/TMB135 mixture as a surrogate has been investigated in a jet-stirred reactor at 500~1100K and atmospheric pressure.Mole fraction profiles of 34 species including light hydrocarbons,oxygenated and aromatic compounds were detected by gas chromatography and gas chromatographymass spectrometry techniques.The low temperature chemistry of the surrogate was analyzed in the NTC region through the coupling effect of n-decane and aromatics.A detailed kinetic mechanism involving 975 species and 5920 reactions was developed and a reasonable prediction was obtained for the measured data in this work and previously reported data of ignition delay times.These results will benefit for further combustion study of practical fuels,particularly for the autoignition at low temperature in gas turbine.
The low temperature oxidation of neat 1,3,5-trimethylbenzene(TMB135) and ndecane/TMB135 mixture as a surrogate has been investigated in a jet-stirred reactor at 500~1100K and atmospheric pressure.Mole fraction profiles of 34 species including light hydrocarbons,oxygenated and aromatic compounds were detected by gas chromatography and gas chromatographymass spectrometry techniques.The low temperature chemistry of the surrogate was analyzed in the NTC region through the coupling effect of n-decane and aromatics.A detailed kinetic mechanism involving 975 species and 5920 reactions was developed and a reasonable prediction was obtained for the measured data in this work and previously reported data of ignition delay times.These results will benefit for further combustion study of practical fuels,particularly for the autoignition at low temperature in gas turbine.
引文
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[26]Lenhert D B,Miller D L,Cernansky N P,et al.The Oxidation of a Gasoline Surrogate in the Negative Temperature Coefficient Region[J].Combustion and Flame,2009,156:549-564
[27]ZHANG Yu,Boehman A L.Autoignition of Binary Fuel Blends of n-heptane and C_7 Esters in a Motored Engine[J].Combustion and Flame,2012,159:1619-1630
[28]RAO Fan,LI Bin,ZHANG Changhua,et al.ShockTube Study of the Ignition of Gas-Phase 1,3,5-Trimethylbenzene in Air[J].Energy&Fuels,2014,28:6707-6713
[2]Dooley S,Won S H,Heyne J et al.The Experimental Evaluation of a Methodology for Surrogate Fuel Formulation to Emulate Gas Phase Combustion Kinetic Phenomena[J].Combustion and Flame,2012,159:1444-1466
[3]Dagaut P,Cathonnet M.The Ignition,Oxidation,and Combustion of Kerosene:A Review of Experimental and Kinetic Modeling[J].Progress in Energy and Combustion Science,2006,32:48-92
[4]Dagaut P,Bakali A E,Ristori A.The Combustion of Kerosene:Experimental Results and Kinetic Modelling Using 1-to 3-Component Surrogate Model Fuels[J].Fuel,2006,85:944-956
[5]Gehmlich R K,Kuo A,Seshadri K.Experimental Investigations of the Influence of Pressure on Critical Extinction Conditions of Laminar Nonpremixed Flames Burning Condensed Hydrocarbon Fuels,Jet Fuels,and Surrogates[J].Proceedings of the Combustion Institute,2015,35:937-943
[6]ZHANG Changhua,LI Bin,RAO Fan,et al.A Shock Tube Study of the Autoignition Characteristics of RP-3 Jet Fuel[J].Proceedings of the Combustion Institute,2015,35:3151-3158
[7]Seshadri K,Frassoldati A,Cuoci A,et al.Experimental and Kinetic Modeling Study of Combustion of JP-8,Its Surrogates and Components in Laminar Premixed Flows[J].Combustion Theory and Modelling,2011,15:569-583
[8]Jahangirian S,McEnally C S,Gomez A.Experimental Study of Ethylene Counterflow Diffusion Flames Perturbed by Trace Amounts of Jet Fuel and Jet Fuel Surrogates Under Incipiently Sooting Conditions[J].Combustion and Flame,2009,156:1799-1809
[9]Won S H,Dooley S,Dryer F L,et al.Kinetic Effects of Aromatic Molecular Structures on Diffusion Flame Extinction[J].Proceedings of the Combustion Institute,2011,33:1163-1170
[10]Won S H,Dooley S,Dryer F L,et al.A Radical Index for the Determination of the Chemical Kinetic Contribution to Diffusion Flame Extinction of Large Hydrocarbon Fuels[J].Combustion and Flame,2012,159:541-551
[11]Won S H,Dooley S,Dryer F L,et al.48th AIAA Aerospace Sciences Meeting[R].Including the New Horizons Forum and Aerospace Exposition,2010:197
[12]Roubaud A,Minetti R,Sochet L R.Oxidation and Combustion of Low Alkylbenzenes at High Pressure:Comparative Reactivity and Auto-Ignition[J].Combustion and Flame,2000,121:535-541
[13]Bikas G,Kinetic Mechanisms for Hydrocarbon Ignition[D].RWTH Aachen University,Aachen,Germany,2001
[14]ZHU Yangye,LI Sijie,Davidson D F,et al.Ignition Delay Times of Conventional and Alternative Fuels Behind Reflected Shock Waves[J].Proceedings of the Combustion Institute,2015,35:241-248
[15]Dievart P,Kim H H,Won S H,et al.The Combustion Properties of 1,3,5-Trimethylbenzene and a Kinetic Model[JJ.Fuel,2013,109:125-136
[16]Brezinsky K.The High-Temperature Oxidation of Aromatic Hydrocarbons[J].Progress in Energy and Combustion Science,1986,12:1-24
[17]Gudiyella S,Brezinsky K.High Pressure Study of 1,3,5-Trimethylbenzene Oxidation[J].Combustion and Flame,2012,159:3264-3285
[18]Ji C,Dames E,Wang H et al.Propagation and Extinction of Benzene and Alkylated Benzene Flames[J].Combustion and Flame,2012,159:1070-1081
[19]HUI Xin,Das A K,Kumar K,et al.Laminar Flame Speeds and Extinction Stretch Rates of Selected Aromatic Hydrocarbons[J].Fuel,2012,97:695-702
[20]Herbinet O,Husson B,Ferrari M,et al.Low Temperature Oxidation of Benzene and Toluene in Mixture With n-Decane[J].Proceedings of the Combustion Institute,2013,34:297-305
[21]Gail S,Dagaut P.Experimental Kinetic Study of the Oxidation of p-xylene in a JSR and Comprehensive Detailed Chemical Kinetic Modeling[J].Combustion and Flame,2005,141:281-297
[22]Honnet S,Seshadri K,Niemann U,et al.A Surrogate Fuel for Kerosene[J].Proceedings of the Combustion Institute,2009,32:485-492
[23]Darcy D,Nakamura H,Tobin C J,et al.A High-Pressure Rapid Compression Machine Study of n-propylbenzene Ignition[J].Combustion and Flame,2014,161:65-74
[24]MAN Xingjia,TANG Chenglong,ZHANG Jiaxiang,et al.An Experimental and Kinetic Modeling Study of npropanol and i-propanol Ignition at High Temperatures[J].Combustion and Flame,2014,161:644-656
[25]Kee R J,Rupley F M,Miller J A.A Fortran chemical kinetics package for the analysis of gas-phase chemical kinetics[R].Sandia Report:SAND 89-8009B[J].1989
[26]Lenhert D B,Miller D L,Cernansky N P,et al.The Oxidation of a Gasoline Surrogate in the Negative Temperature Coefficient Region[J].Combustion and Flame,2009,156:549-564
[27]ZHANG Yu,Boehman A L.Autoignition of Binary Fuel Blends of n-heptane and C_7 Esters in a Motored Engine[J].Combustion and Flame,2012,159:1619-1630
[28]RAO Fan,LI Bin,ZHANG Changhua,et al.ShockTube Study of the Ignition of Gas-Phase 1,3,5-Trimethylbenzene in Air[J].Energy&Fuels,2014,28:6707-6713