TY - JOUR
T1 - Mathematical model of performance prediction of axisymmetric vectoring nozzle based on numerical simulations
AU - Chang, Lu
AU - Eriqitai,
AU - Yang, Ya Xiong
N1 - Publisher Copyright:
© 2017, Editorial Department of Journal of Aerospace Power. All right reserved.
PY - 2017/4/1
Y1 - 2017/4/1
N2 - A series of axisymmetric vectoring nozzles with different divergent geometrical parameters were studied based on 3D numerical simulations, and each nozzle's flow field was simulated under different working conditions. The effects of divergent angle and divergent wall length on nozzle performance were analyzed. Through the method of least square surface fitting, a mathematical model taking divergent angle, divergent length/throat height, nozzle pressure ratio/designed nozzle pressure ratio and vector angle as its independent variables was established. Through comparison of performance predictions with the experimental data, result showed that, the error of thrust coefficient was under 0.41%, the error of flow coefficient was under 1.58% and the error of vectoring angle was under 1.76°. The mathematical model was built to predict performances of nozzle with different geometrical parameters, presenting strong commonality and engineering significance.
AB - A series of axisymmetric vectoring nozzles with different divergent geometrical parameters were studied based on 3D numerical simulations, and each nozzle's flow field was simulated under different working conditions. The effects of divergent angle and divergent wall length on nozzle performance were analyzed. Through the method of least square surface fitting, a mathematical model taking divergent angle, divergent length/throat height, nozzle pressure ratio/designed nozzle pressure ratio and vector angle as its independent variables was established. Through comparison of performance predictions with the experimental data, result showed that, the error of thrust coefficient was under 0.41%, the error of flow coefficient was under 1.58% and the error of vectoring angle was under 1.76°. The mathematical model was built to predict performances of nozzle with different geometrical parameters, presenting strong commonality and engineering significance.
KW - Axisymmetric vectoring nozzle
KW - Divergent angle
KW - Divergent length
KW - Least square surface fitting
KW - Mathematical model
KW - Performance prediction
UR - https://www.scopus.com/pages/publications/85021417043
U2 - 10.13224/j.cnki.jasp.2017.04.016
DO - 10.13224/j.cnki.jasp.2017.04.016
M3 - 文章
AN - SCOPUS:85021417043
SN - 1000-8055
VL - 32
SP - 909
EP - 916
JO - Hangkong Dongli Xuebao/Journal of Aerospace Power
JF - Hangkong Dongli Xuebao/Journal of Aerospace Power
IS - 4
ER -