2DPIV视场布置方案研究  

Investigation to disposition scheme of 2DPIV field of view

作　　者：董超[1] 邓学蓥[1] 王延奎[1] 张杰[1] 

机构地区：[1]北京航空航天大学流体力学研究所,北京100191

出　　处：《空气动力学学报》2010年第5期602-608,共7页Acta Aerodynamica Sinica

摘　　要：针对大迎角旋涡三维分离流动空间速度场的测量,介绍了一种能够减小2DPIV实验透视误差的视场布置方案,并将该方案应用于大迎角前体非对称涡流动二涡区截面流场的研究中,比较SPIV和2DPIV同步测量结果的差异。实验结果表明,该视场布置方案能够将2DPIV所摄截面旋涡区速度分量u、v的透视误差由原来的14%、18%减小至5%以内(相对于来流风速V∞)。该视场布置方案可将2DPIV测量旋涡涡心的位置误差控制在流场结构空间分辨率的范围之内。In order to investigate the vector field of three-dimensional vortex separation flow at high angles of attack,an arrangement scheme of 2DPIV field of view was developed to reduce perspective error.And this scheme was applied to a two-vortex section of asymmetric vortex flow at high angles of attack.Direct comparison between 2DPIV and Stereoscopic PIV（SPIV） synchronous measurements was conducted.The results showed that the perspective errors of the vector components u and v were reduced from 14% and 18% respectively to below 5% by applying this scheme.Meanwhile,the measurement error of the vortex core position was in the range of the space resolution of the vector field.

关 键 词：2DPIV 透视误差 SPIV 非对称涡流动 大迎角 

分 类 号：V211.7[航空宇航科学与技术—航空宇航推进理论与工程]