| WANG Wei1，ZHAO Zhen2，JIN Wen-dong1，DENG Hong-wei1.Numerical Simulation of Serpentine 2-D Vectoring Nozzle based on Shock Wave Control[J].航空发动机,2021,47(5):19-25 |
| Numerical Simulation of Serpentine 2-D Vectoring Nozzle based on Shock Wave Control |
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| Key Words:Serpentine 2-D vectoring nozzle shock wave control thrust vectoring numerical simulation aeroengine |
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| Abstract:In order to obtain the aerodynamic performances of the Serpentine 2-D vectoring nozzle，the working mechanism of shock
wave induction of Serpentine 2-D vectoring nozzle with or without secondary flow injection was studied by CFD numerical simulation meth?
od, and the effects of secondary flow injection position，Nozzle Pressure Ratio（NPR）and Second Flow Pressure Ratio（SPR）on the thrust co?
efficient，vector angle and wall static pressure of Serpentine 2-D vectoring nozzle were studied. The results show that under the condition of
fixed secondary flow area and the ratio of secondary flow by main flow less than or equal to 6 percent，maximum vector angle due to second?
ary flow injection on the up and down nozzle surface reach 22.9 and 15.9 degree separately. Injection position have dramatically affects on
vector angle and have little effect on thrust coefficient. Vector angle increased firstly and decreased later as the secondary flow injection po?
sition approach outlet gradually. Thrust coefficient increase with the increase of NPR when the injection position fixed. Thrust coefficient
increase 17.9 percent maximum and vector angle increased firstly and decreased later when NPR increase from 2 to 6. With the increase of
SPR，thrust coefficient decrease and vector angle increased firstly and decreased later. |
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