摘要
应用单侧脉冲放电等离子体对细长圆锥前体非对称涡进行了主动流动控制研究。通过风洞试验,对不同截面的周向静态压力分布和动态压力变化进行了测量。同时,对不同截面的周向压力分布进行积分,计算其当地侧向力、当地侧向力增量以及圆锥段侧向力和偏航力矩。研究结果表明,通过单侧脉冲放电可以实现对细长圆锥前体侧向力和力矩的比例控制,并且具有良好的线性度。第八截面动态压力数据的全时间平均和相位锁定平均都达到了收敛。通过比较第八截面相位锁定平均下的压力分布,得出流场的响应滞后于此次50Hz的脉冲调制频率。
A study using single-pulsed discharge plasma is performed on the flow control of asymmetrical vortices over slender conical forebody. The different circumferential static and dynamic pressure distributions are measured in the wind tunnel test. At the same time, the local side force, the increment of local side force and the overall side force and moment are calculated with the circumferential pressure distributions of different sections. The test result shows that we can use port single-pulsed discharge to achieve the linear proportional control of asymmetrical force and moment over slender conical forebody and have good linearity. Both ensemble averaged and phase-locked averaged dynamic pressure data at Section 8 have reached convergence. Compared with the phase-locked averaged pressure distributions of different phase angle at Section 8, the response of flow field is hysteresis of the pulsed modulating frequency.
出处
《空气动力学学报》
EI
CSCD
北大核心
2012年第5期680-684,共5页
Acta Aerodynamica Sinica
基金
国家自然科学基金(11172243)
高等学校博士学科点专项科研基金(20106102110002)
西北工业大学基础研究基金(JC201218)
