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某组合发动机进气道抽吸作用分析
引用本文:张华军,梁德旺.某组合发动机进气道抽吸作用分析[J].南京航空航天大学学报,2006,38(5):577-582.
作者姓名:张华军  梁德旺
作者单位:南京航空航天大学能源与动力学院,南京,210016
摘    要:对某组合发动机进气道设计马赫数下的三维流场进行了数值模拟。研究了不同位置抽吸对进气道流场及性能的影响,研究结果表明,外压部分抽吸能在较小的抽吸流量下有效改善进气道的起动性能和气动性能,而又不改变进气道的内通道特性;内通道抽吸均化了喉道出口流场,提高了总压恢复系数,但减弱了压缩程度,造成压比、温升比较大幅度地下降,喉道出口马赫数增加,且抽吸流量越大,压比、温升比的降幅和喉道出口马赫数的升幅越大。

关 键 词:进气道  组合发动机  附面层抽吸  数值模拟
文章编号:1005-2615(2006)05-0577-06
收稿时间:2005-11-14
修稿时间:2006-03-30

Analysis of Suction Roles for Supersonic Inlet on Combined Engine
Zhang Huajun,Liang Dewang.Analysis of Suction Roles for Supersonic Inlet on Combined Engine[J].Journal of Nanjing University of Aeronautics & Astronautics,2006,38(5):577-582.
Authors:Zhang Huajun  Liang Dewang
Institution:College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China
Abstract:The 3-D flow field in a inlet of combined engine with suction at different positions is numerically analyzed.The flow characteristics in the inlet at different suction positions are compared and discussed.Results show that the mass flow rate sucted by the suction holes on external compression surface is small,the starting performance and the aerodynamic performance of the inlet are greatly improved,and the characteristics of the flow contributed by the internal duct of inlet are less changed.With suction on internal passage surfaces,the flow field at throat station is more uniform and the total pressure recovery is higher,but the pressure ratio and the temperature ratio increased by the inlet are much lower than those without the suction.With the increase of the mass flow by the suctions,the change described above is more obvious.The conclusions are useful to study the suction for other inlet with high Mach number including the hypersonic inlet.
Keywords:inlet  combined engine  boundary layer suction  numerical simulation
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