TY - GEN
T1 - Influence of Continuous Jet at the Lower Surface on Airfoil Aerodynamic Performance
AU - Fu, Yunhao
AU - Shi, Jingping
AU - Huang, Degang
AU - Zhang, Weiguo
N1 - Publisher Copyright:
© 2022, The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
PY - 2022
Y1 - 2022
N2 - A new control method using jet to control airfoil is proposed through arranged jet on the lower surface of the trailing edge (LSTE jet). Commercial computational fluid dynamics software CFX was utilized to compute the flow field around the airfoil. Through comparing the changes of the flow field before and after the jet was applied, we studied the flow control effects and laws of LSTE jet. We also studied the change rule of lift and drag characteristics with jet position, momentum coefficient and forward angle. Our results showed that, first, LSTE jet caused low-pressure zone at airfoil trailing edge and forced the flow to deflect downward, which increased the effective curvature of the airfoil and so increased the lift. Second, aerodynamic coefficients were sensitive to all of the three parameters of jet position, momentum coefficient and forward angle. LSTE jet closer to the trailing edge caused greater lift and less drag because it created a larger low-pressure area. At small angle of attack, lift coefficient increased as jet momentum coefficient increased and had good linearity. The best forward angle was 70°, at which point the lift was greatest and the drag was least. In general, LSTE jet can effectively influence aerodynamic characteristics of NACA0012 airfoil and had a good application prospect in flow control of aircraft.
AB - A new control method using jet to control airfoil is proposed through arranged jet on the lower surface of the trailing edge (LSTE jet). Commercial computational fluid dynamics software CFX was utilized to compute the flow field around the airfoil. Through comparing the changes of the flow field before and after the jet was applied, we studied the flow control effects and laws of LSTE jet. We also studied the change rule of lift and drag characteristics with jet position, momentum coefficient and forward angle. Our results showed that, first, LSTE jet caused low-pressure zone at airfoil trailing edge and forced the flow to deflect downward, which increased the effective curvature of the airfoil and so increased the lift. Second, aerodynamic coefficients were sensitive to all of the three parameters of jet position, momentum coefficient and forward angle. LSTE jet closer to the trailing edge caused greater lift and less drag because it created a larger low-pressure area. At small angle of attack, lift coefficient increased as jet momentum coefficient increased and had good linearity. The best forward angle was 70°, at which point the lift was greatest and the drag was least. In general, LSTE jet can effectively influence aerodynamic characteristics of NACA0012 airfoil and had a good application prospect in flow control of aircraft.
KW - Active flow control
KW - Increasing lift
KW - Lower surface jet
KW - NACA12
KW - Small angle of attack
UR - http://www.scopus.com/inward/record.url?scp=85120626151&partnerID=8YFLogxK
U2 - 10.1007/978-981-15-8155-7_147
DO - 10.1007/978-981-15-8155-7_147
M3 - 会议稿件
AN - SCOPUS:85120626151
SN - 9789811581540
T3 - Lecture Notes in Electrical Engineering
SP - 1745
EP - 1753
BT - Advances in Guidance, Navigation and Control - Proceedings of 2020 International Conference on Guidance, Navigation and Control, ICGNC 2020
A2 - Yan, Liang
A2 - Duan, Haibin
A2 - Yu, Xiang
PB - Springer Science and Business Media Deutschland GmbH
T2 - International Conference on Guidance, Navigation and Control, ICGNC 2020
Y2 - 23 October 2020 through 25 October 2020
ER -