复杂外形高超声速飞行器气动热快速工程估算
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摘要
针对复杂外形高超声速飞行器方案设计阶段的气动热计算效率问题,建立了高超声速飞行器气动热的快速工程计算方法。采用修正牛顿理论确定飞行器表面压力分布,利用牛顿最速下降理论计算飞行器表面流线分布,采用参考焓法、高温空气热力学特性的拟合公式以及热流密度的工程计算公式求出飞行器表面目标点的热流密度,计算了钝锥、升力体以及类乘波体的表面热流分布。仿真分析表明:该方法适用于复杂外形,且具有较高的计算效率和精度,能够满足复杂高超声速飞行器设计方案阶段气动热估算需求。
Aimed for the question of computational efficiency during conceptual design stage,a rapid engineering aero-heating calculation method for complex shaped hypersonic vehicles is established.Firstly the pressure distribution along vehicle's surface was calculated by modified Newtonian theory.Secondly,the streamline that passes through the target point was calculated with Newtonian steepest decent concept.Then by using the fitted function of high temperature gas parameters,reference enthalpy method and engineering calculation function of aero-heating,the heat current of target point was presented.Finally,the heat flux on the surfaces of blunted cone,lifting body and wave-rider vehicle was calculated The analysis result shows the method used in this paper is fit for complex figure,and can satisfy the aero-heating calculation during conceptual design stage in both efficiency and precision.
Aimed for the question of computational efficiency during conceptual design stage,a rapid engineering aero-heating calculation method for complex shaped hypersonic vehicles is established.Firstly the pressure distribution along vehicle's surface was calculated by modified Newtonian theory.Secondly,the streamline that passes through the target point was calculated with Newtonian steepest decent concept.Then by using the fitted function of high temperature gas parameters,reference enthalpy method and engineering calculation function of aero-heating,the heat current of target point was presented.Finally,the heat flux on the surfaces of blunted cone,lifting body and wave-rider vehicle was calculated The analysis result shows the method used in this paper is fit for complex figure,and can satisfy the aero-heating calculation during conceptual design stage in both efficiency and precision.
引文
[1]汤海荣.高超声速飞行器表面热流密度工程估算方法研究[D].南京:南京航空航天大学,2010.TANG Hairong,The investigation in engineering calculationmethods for heating flux on hypersonic vehicle[D].Nanjing:Nanjing University of Aeronautics and Astronautics,2010.
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[4]Deters K J.Preliminary design estimates of high-speedstreamlines on arbitrary shaped vehicles defined byquadrilateral elements[R].A/AA Paper,1993.
[5]蒋友娣.高超声速飞行器气动热和表面瞬态温度计算研究[D].上海:上海交通大学,2010.JIANG Youdi.The investigation in Aerodynamic-heating andtransient temperature of hypersonic vehicle[D].Shanghai:Shanghai Jiao Tong University,2010.(in Chinese)
[6]杨恺,高效伟.高超声速气动热环境工程算法[J].导弹与航天运载技术,2010(4):19-23.YANG Kai,GAO Xiaowei.Engineering algorithm foraeroheating environment of hypersonic aircrafts[J].Missilesand Space Vehicles,2010(4):19-23.(in Chinese)
[7]崔凯,杨国伟,申义庆.乘波体气动外形优化初步研究[C]//全国第十三届高超声速气动力(热)学术交流会议论文集,2005.CUI Kai,YANG Guowei,SHEN Yiqing.Preliminaryinvestigation in wave-rider vehicle configuration optimization[C]//Proceedings of 13th National Hypersonic AerodynamicPressure(Heating)Academic Conference,2005.(in Chinese)
[2]吕红庆,王振清,王永军,等.高超声速钝头体气动热分析[J].导弹与航天运载技术,2008(3):41-45.LV Hongqing,WANG Zhenqing,WANG Yongjun,et al.Aero-heating analysis for hypersomc blunt-headed body[J].Missiles and Space Vehicles,2008(3):41-45.(in Chinese)
[3]吕丽丽.高超声速气动热工程算法研究[D].西安:西北工业大学,2007.LV Lili.The investigation in Aerodynamic-heating engineeringcalculation methods for hypersonic vehicle[D].Xi’an:Northwestern Polytechnical University,2007.(in Chinese)
[4]Deters K J.Preliminary design estimates of high-speedstreamlines on arbitrary shaped vehicles defined byquadrilateral elements[R].A/AA Paper,1993.
[5]蒋友娣.高超声速飞行器气动热和表面瞬态温度计算研究[D].上海:上海交通大学,2010.JIANG Youdi.The investigation in Aerodynamic-heating andtransient temperature of hypersonic vehicle[D].Shanghai:Shanghai Jiao Tong University,2010.(in Chinese)
[6]杨恺,高效伟.高超声速气动热环境工程算法[J].导弹与航天运载技术,2010(4):19-23.YANG Kai,GAO Xiaowei.Engineering algorithm foraeroheating environment of hypersonic aircrafts[J].Missilesand Space Vehicles,2010(4):19-23.(in Chinese)
[7]崔凯,杨国伟,申义庆.乘波体气动外形优化初步研究[C]//全国第十三届高超声速气动力(热)学术交流会议论文集,2005.CUI Kai,YANG Guowei,SHEN Yiqing.Preliminaryinvestigation in wave-rider vehicle configuration optimization[C]//Proceedings of 13th National Hypersonic AerodynamicPressure(Heating)Academic Conference,2005.(in Chinese)