翼面吹气对过失速非定常翼面涡的影响  

Effect of Blowing on Strake Wing Vortices during Dynamic Pitching

作　　者：黄达[1] 吴根兴[1] 

机构地区：[1]南京航空航天大学空气动力学系

出　　处：《南京航空航天大学学报》1997年第3期321-325,共5页Journal of Nanjing University of Aeronautics & Astronautics

基　　金：国防预研基金

摘　　要：在１ｍ低速风洞中，研究了边条翼在过失速非定常流动控制后的空间流态。实验采用翼面吹气控制翼面非定常流动，通过烟流显示涡轨迹和涡破碎位置，用相锁照相技术记录空间流态。结论表明，在机翼上仰过程中，翼面吹气能延迟前缘涡的破碎，在机翼下俯过程中，吹气有利于前缘涡的生成和发展。A flow visualization investigation on leading edge breakdown is conducted in a wind tunnel to identify the effect of blowing on a strake wing model undergoing large amplitude pitching motions. During these experiments, the visualization of the leading edge vortices is obtained by injecting smoke. The location of vortice breakdown is recorded by use of the phase locked photography technique. Results indicate that blowing delays the burst of leading edge vortices during pitching up and is favorable for producing and developing the leading edge vortices during pitching down.

关 键 词：非定常 吹气 边条翼 涡破碎 机翼理论 翼面涡 

分 类 号：V211.41[航空宇航科学与技术—航空宇航推进理论与工程]