大涵道比发动机通流短舱阻力特性修正数值研究
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摘要
为准确获取大涵道比发动机气动特性,根据民用飞机研制需求,对民用干线飞机的发动机短舱三维流场进行数值模拟,对比了通流短舱和真实发动机短舱流场特征,分析了通流短舱的气动特性和阻力修正方法。结果表明:大涵道比发动机通流短舱的流场特征、气动力和真实发动机较为接近,但是由于发动机内流通道气动力一般计入推力和无法完全模拟发动机进排气效应,有必要对通流短舱进行考虑内部阻力在内的气动特性修正;通过对大涵道比发动机推阻力划分理论进行分析,获得了与真实发动机一致的通流短舱气动力分解方法,并可以较好地应用到通流短舱内部阻力修正上;通过对通流短舱阻力修正(含内阻修正和溢流阻力修正),在巡航状态下修正后的通流短舱与发动机动力短舱阻力特性差异降低了约46%;在高速巡航状态,阻力修正后的通流短舱气动特性可以更好地反映真实发动机工作的影响,但依然有必要对发动机动力喷流影响开展进一步的分析工作。
In order to obtain the large bypass ratio engine through flow nacelle(TFN)aerodynamic characteristics accurately,three-dimensional flow field of a trunk liner aircraft nacelle was numerically simulated according to the development requirements of civil jet aircraft,the flow field,aerodynamic characteristics and drag correction method of the TFN were analyzed. The results suggest that: The flow field and aerodynamic characteristic of TFN are similar to the large bypass ratio engine powered nacelle,but it is still necessary to correct the TFN aerodynamic characteristics including the internal drag due to the internal aerodynamic force accounting as thrust and TFN inability of simulating the engine inflow and jet effects. By analyzing the thrust and drag accounting theory of large bypass ratio engine,the method for decomposing the aerodynamic force on TFN is obtained and can be applied to the internal drag correction of the TFN. The aerodynamic characteristics of the TFN are closer to the real engine nacelle through correcting the spillage drag and internal drag,the difference between the TFN and real engine nacelle decrease about 46%. In the cruise condition,the TFN with drag-corrected can better reflect the real engine aerodynamic characteristics,but it is suggested to carry out further analysis on the impact of jet effects.
In order to obtain the large bypass ratio engine through flow nacelle(TFN)aerodynamic characteristics accurately,three-dimensional flow field of a trunk liner aircraft nacelle was numerically simulated according to the development requirements of civil jet aircraft,the flow field,aerodynamic characteristics and drag correction method of the TFN were analyzed. The results suggest that: The flow field and aerodynamic characteristic of TFN are similar to the large bypass ratio engine powered nacelle,but it is still necessary to correct the TFN aerodynamic characteristics including the internal drag due to the internal aerodynamic force accounting as thrust and TFN inability of simulating the engine inflow and jet effects. By analyzing the thrust and drag accounting theory of large bypass ratio engine,the method for decomposing the aerodynamic force on TFN is obtained and can be applied to the internal drag correction of the TFN. The aerodynamic characteristics of the TFN are closer to the real engine nacelle through correcting the spillage drag and internal drag,the difference between the TFN and real engine nacelle decrease about 46%. In the cruise condition,the TFN with drag-corrected can better reflect the real engine aerodynamic characteristics,but it is suggested to carry out further analysis on the impact of jet effects.
引文
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[4]姬昌睿,刘凯礼,张鹏飞,等.外物损伤对民用飞机短舱内/外流气动特性的影响[J].航空学报,2015,36(3):772-781.
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[10]谭兆光,陈迎春,李杰,等.机体/动力装置一体化分析中的动力影响效应数值模拟[J].航空动力学报,2009,24(8):1766-1772.
[11] Zhang Yufei,Chen Haixin,Fu Song,et al. Drag Prediction Method of Powered-on Civil Aircraft Based on Thrust Drag Bookkeeping[J]. Chinese Journal of Aeronautics,2015,28(4):1023-1033.
[12]郭少杰,周培培,王斌,等.动力效应对民机起飞构型气动特性影响的数值研究[J].航空动力学报,2016,31(7):1638-1648.
[13]聂雪媛,刘中玉,黄程德,等. CFD/CSD方法分析动力效应对民机气动特性影响[J].航空动力学报,2017,32(7):1631-1638.
[14] Michimasa Fujino, Yuichi Kawamura. Wave-Drag Characteristics of an Over-the-Wing Nacelle BusinessJet Configuration[J]. Journal of Aircraft,2003,40(6):1177-1184.
[15] Milton Lamb,William K Abeyounis,James C Patterson.Nacelle/Pylon/Wing Integration on a Transport Model with a Natural Laminar Flow Nacelle[R]. NASA TP-2439,1985.
[16]党亚斌,刘凯礼,谭兆光,等.民用飞机尾吊发动机安装效应对推力影响研究[J].推进技术,2018,39(8):1712-1719.(DANG Ya-bin,LIU Kai-li,TAN Zhao-guang,et al. Numerical Study of Engine Installed Effect on a Tail-Mounted Civil Aircraft Thrust Characteristic[J]. Journal of Propulsion Technology,2018,39(8):1712-1719.)
[17] Hirose N,Asai K,Ikawa K. Transonic 3D Euler Analysis of Flows Around Fan-Jet Engine and T.P.S.(Turbine Powered Simulator)[R]. NAL-TR-1045,1989.
[18] Richard J R E. An Investigation of Several NACA 1-Series Axisymmetric Inlets at Mach Numbers from 0.4 to1.29[R]. NASA TM X-2917,1974.
[2]刘凯礼,孙一峰,钟园,等.民用飞机进气道的侧风畸变研究[J].航空动力学报,2015,30(2):289-296.
[3]刘凯礼,姬昌睿,谭兆光,等.大涵道比涡扇发动机TPS短舱低速气动特性分析[J].推进技术,2015,36(2):186-193.(LIU Kai-li,JI Chang-rui,TAN Zhaoguang,et al. Numerical Study on Low Speed Aerodynamic Performance of Large Bypass Ratio Engine TPS Nacelle[J]. Journal of Propulsion Technology,2015,36(2):186-193.)
[4]姬昌睿,刘凯礼,张鹏飞,等.外物损伤对民用飞机短舱内/外流气动特性的影响[J].航空学报,2015,36(3):772-781.
[5] Luis Gustavo Trapp, Henrique Gustavo Argentieri.Evaluation of Nacelle Drag Using Computational Fluid Dynamics[J]. Journal of Aerospace Technology and Management,2010,2(2):145-154.
[6] Seddon J,Goldsmith E L. Intake Aerodynamics[M].USA:AIAA Education Series,1999.
[7]赵鹤书.飞机进气道气动原理[M].北京:国防工业出版社,1989.
[8] Brett Denner,Brent McCallum,Phil Truax. CFD Prediction of Inlet Spill Drag Increments[R]. AIAA 98-3566.
[9]张兆,陶洋,黄国川.发动机短舱溢流阻力的数值模拟研究[J].航空学报,2011,32(3).
[10]谭兆光,陈迎春,李杰,等.机体/动力装置一体化分析中的动力影响效应数值模拟[J].航空动力学报,2009,24(8):1766-1772.
[11] Zhang Yufei,Chen Haixin,Fu Song,et al. Drag Prediction Method of Powered-on Civil Aircraft Based on Thrust Drag Bookkeeping[J]. Chinese Journal of Aeronautics,2015,28(4):1023-1033.
[12]郭少杰,周培培,王斌,等.动力效应对民机起飞构型气动特性影响的数值研究[J].航空动力学报,2016,31(7):1638-1648.
[13]聂雪媛,刘中玉,黄程德,等. CFD/CSD方法分析动力效应对民机气动特性影响[J].航空动力学报,2017,32(7):1631-1638.
[14] Michimasa Fujino, Yuichi Kawamura. Wave-Drag Characteristics of an Over-the-Wing Nacelle BusinessJet Configuration[J]. Journal of Aircraft,2003,40(6):1177-1184.
[15] Milton Lamb,William K Abeyounis,James C Patterson.Nacelle/Pylon/Wing Integration on a Transport Model with a Natural Laminar Flow Nacelle[R]. NASA TP-2439,1985.
[16]党亚斌,刘凯礼,谭兆光,等.民用飞机尾吊发动机安装效应对推力影响研究[J].推进技术,2018,39(8):1712-1719.(DANG Ya-bin,LIU Kai-li,TAN Zhao-guang,et al. Numerical Study of Engine Installed Effect on a Tail-Mounted Civil Aircraft Thrust Characteristic[J]. Journal of Propulsion Technology,2018,39(8):1712-1719.)
[17] Hirose N,Asai K,Ikawa K. Transonic 3D Euler Analysis of Flows Around Fan-Jet Engine and T.P.S.(Turbine Powered Simulator)[R]. NAL-TR-1045,1989.
[18] Richard J R E. An Investigation of Several NACA 1-Series Axisymmetric Inlets at Mach Numbers from 0.4 to1.29[R]. NASA TM X-2917,1974.
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