| 张少丽，周吉利，贾东兵，徐速.固定几何气动矢量喷管气动性能数值仿真[J].航空发动机,2018,44(2):20-26 |
| 固定几何气动矢量喷管气动性能数值仿真 |
| Numerical Simulation on Performances of Fluidic Control Fixed Geometry Aerodynamic Nozzle |
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| DOI： |
| 中文关键词: 气动性能 固定几何 流体控制 矢量喷管 数值仿真 航空发动机 |
| 英文关键词:aerodynamic performances fixed geometry fluidic control vectoring nozzle numerical simulation aeroengine |
| 基金项目:国家重大基础研究项目资助 |
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| 中文摘要: |
| 为掌握固定几何气动矢量喷管气动性能，通过CFD 数值模拟的方法，研究了主流落压比、扩张段二次流落压比、扩张段
二次流角度和引射对固定几何气动矢量喷管轴向推力系数的影响；主流落压比、扩张段二次流落压比和扩张段二次流角度对矢量
角的影响；主流落压比、喉道二次流落压比和喉道二次流角度对喉道控制率的影响。结果表明:随主流落压比增大轴向推力系数增
大，矢量角减小，喉道控制率减小；随扩张段二次流落压比增大推力系数减小，矢量角增大；随喉道二次流落压比增大，喉道控制率
增大；随扩张段二次流角增大轴向推力系数减小，矢量角略有减小；随喉道二次流角增大喉道控制率增大；随引射方式增加喷管推
力系数增大。 |
| 英文摘要: |
| In order to obtain the aerodynamic performances of the fluidic control fixed geometry nozzle, the effects of Nozzle Pressure
Ratio （NPR）, Second Flow Pressure Ratio （SPR）, angle of second flow on divergent section and injection on the axial thrust coefficient for
the fluidic control fixed geometry nozzle, the effects of nozzle pressure ratio, SPR and angle of second flow on divergent section on the
vectoring angle, the effects of NPR, SPR and angle of second flow on throat section on the control ratio of throat area were investigated by
CFD numerical calculations. The results show that the axial thrust coefficient increased, the vectoring angle and the control ratio of throat
area decreased with the increase of NPR. The axial thrust coefficient decreased, the vectoring angle increased with the increase of SPR on
divergent section. The control ratio of throat area increased with the increase of SPR on throat section. The axial thrust coefficient decreased
and the vectoring angle decreased a little with the increase of angle of second flow on divergent. The control ratio of throat area increased
with the increase of angle of second flow on throat. The thrust coefficient increased with the increase of injection mode. |
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