燃烧加热污染空气对煤油超燃冲压发动机性能的影响
Effects of combustion heating vitiated air on kerosene-fueled scramjet performance
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摘要: 针对目前超燃冲压发动机地面试验设备普遍存在的工质污染问题,采用经过验证的数值计算方法开展了燃烧加热污染空气对煤油超燃冲压发动机性能的影响研究.以飞行马赫数为6.0作为基准状态,分别对纯净空气来流和不同参数匹配方案的污染空气来流下发动机整机流场和性能进行了数值模拟.计算结果表明:在压力参数中选择匹配静压时最接近于纯净空气来流的结果,选择匹配总压时差别最大;在温度参数中选择匹配静温时最接近于纯净空气来流的结果,选择匹配总温时差别最大;压力参数匹配选择的影响更具有决定性作用,需要优先考虑.研究结果可为认识整机污染效应影响,确定污染空气来流下地面试验模拟准则提供理论依据.Abstract: For the problem of test media vitiation associated with scramjet ground test facility, the effects of combustion heating vitiated air on kerosene-fueled scramjet performance were investigated with validated numerical approach. Under the simulating condition of flight Mach 6.0, the flow-field and performance of the scramjet were numerically calculated with clean free airstream and vitiated free airstream, respectively. Several matched parameter schemes for vitiated free airstream relative to clean air were considered. It indicates that among the pressure-interrelated parameters, the least discrepancy resulting from vitiation effects is found when the static pressure is matched, while the most discrepancy is found when the total pressure is matched; among the temperature-interrelated parameters, the least discrepancy resulting from vitiation effects is found when the static temperature is matched, while the most discrepancy is found when the total temperature is matched. As for the vitiation effects of combustion heating vitiated air, selection of pressure-interrelated parameters to be matched is more significant than selection of temperature-interrelated parameters. The present efforts can provide theoretical basis for understanding the vitiation effects on the scramjet and determining the simulation rules of ground test with vitiated free airstream.
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Key words:
- scramjet /
- kerosene fuel /
- combustion heating /
- vitiation effect /
- numerical calculation
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[1] McDaniel J,Krauss R,Whitehurst W,et al.Test gas vitiation effects in a dual-mode combustor.AIAA-2003-6960,2003. [2] Goyne C,McDaniel J,Krauss R,et al.Test gas vitiation effects in a dual-mode scramjet combustor[J].Journal of Propulsion and Power,2007,23(3):559-565. [3] Rockwell R,Goyne C,Haw W,et al.Experimental study of test medium vitiation effects on dual-mode scramjet mode transition.AIAA-2010-1126,2010. [4] Noda J,Tomioka S,Izumikawa M,et al.Estimation of enthalpy effects in direct-connect dual-mode combustor[J].Journal of Thermal Science and Technology,2011,6(2):289-296. [5] 罗飞腾,宋文艳,刘昊.污染空气对氢燃料超声速燃烧室性能的影响[J].推进技术,2010,31(4):401-405. LUO Feiteng,SONG Wenyan,LIU Hao.Experimental investigation for vitiated air effects on hydrogen-fueled supersonic combustor performance[J].Journal of Propulsion Technology,2010,31(4):401-405.(in Chinese) [6] 刘昊,宋文艳,罗飞腾.污染空气对乙烯燃料超声速燃烧影响的试验[J].推进技术,2011,32(1):70-75. LIU Hao,SONG Wenyan,LUO Feiteng.Experiments on vitiated air effects of ethylene-fueled supersonic combustion[J] Journal of Propulsion Technology,2011,32(1):70-75.(in Chinese) [7] Mitani T,Hiraiwa T,Sato S,et al.Comparison of scramjet engine performance in Mach 6 vitiated and storage-heated air[J].Journal of Propulsion and Power,1997,13(5):635-642. [8] Hiraiwa T,Sato S,Tomioka S,et al.Testing of a scramjet engine model in Mach 6 vitiated air flow.AIAA 97-292,1997. [9] Tomioka S,Hiraiwa T,Kobayashi T,et al.Vitiation effects on scramjet engine performance in Mach 6 flight conditions[J].Journal of Propulsion and Power,2007,23(4):789-796. [10] Goyne C,Hall C,O'Brien W,et al.The Hy-V scramjet flight experiment.AIAA-2006-7901,2006. [11] Goyne C,Cresci D,Fetterhoff T.Short duration propulsion test and evaluation(Hy-V) program.AIAA-2009-7296,2009. [12] 杨顺华.碳氢燃料超燃冲压发动机数值研究.四川 绵阳:中国空气动力研究与发展中心,2006. YANG Shunhua.Numerical studies on hydrocarbon fueled scramjets.Mianyang Sichuan:China Aerodynamics Research and Development Center,2006.(in Chinese) [13] Hautman D,Dryer F,Schug K,et al.A multiple-step overall kinetic mechanism for the oxidation of hydrocarbons[J].Combustion Science and Technology,1981,25(5/6):219-235. [14] Turns S R,Stephen R.An introduction to combustion:concepts and applications[M].New York:McGraw-Hill,1996. [15] Srinivasan S,Erickson W.Influence of test-gas vitiation on mixing and combustion at Mach 7 flight conditions.AIAA 94-2816,1994. [16] Srinivasan S,Erickson W.Interpretation of vitiation effects on testing at Mach 7 flight conditions.AIAA 95-2719,1995.
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