Numerical Study of a Novel Piston-type Synthetic Jet Actuator with a Quick-return Characteristic

2016 2nd International Conference on Mechanical and Aeronautical Engineering (ICMAE 2016)

机械制造;航空航天工程

Liu, Zheng^1 ; Eriqitai, E.^1 ; Hong, Liang^1

School of Energy and Power Engineering, Beihang University, College Road 37# PRC, Beijing, China^1

关键词: High Speed;    Jet momentum;    Jet velocities;    Parametric study;    Pressure ratio;    Quick-return;    Synthetic jet actuators;    Top dead centres;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/187/1/012030/pdf
DOI  :  10.1088/1757-899X/187/1/012030

学科分类：航空航天科学

来源: IOP

【 摘 要 】

A novel designed piston-type synthetic jet actuator has been developed, which has a quick-return characteristic. When moving to the Top Dead Centre, the piston in high speed route moves faster than the classical one. Compared with classical piston-type SJA, the pressure ratio of the cavity, jet velocity and the jet momentum of the novel SJA increase significantly, which greatly enhances the performance of the actuator. A parametric study has been carried out focusing on the affection in different actuation frequencies and duty cycle. Results show that the performance of the quick-return piston-type SJA is significantly improved.