DPIV在水洞流场均匀度校测中的应用  

Measurements of Velocity Uniformity in Watertunnel Using DPIV

作　　者：黄湛[1] 申功炘[1] 魏润杰[1] 郭辉[1] 

机构地区：[1]北京航空航天大学飞行器设计与应用力学系

出　　处：《北京航空航天大学学报》2002年第5期559-562,共4页Journal of Beijing University of Aeronautics and Astronautics

摘　　要：用数字式粒子图像测速技术 (DPIV)及特定预偏置技术校测水洞流场 ,并将测量结果与用传统流场校测方法测得的结果相比较 ,发现特定预偏置技术显著提高了流场测量精度 。A Digital Particle Image Velocimetry(DPIV)system using a special Pre bias method was applied to flow field calibration measurements in the testing section of a water tunnel. Compared with the measurement results obtained by traditional methods (Pitot probe, LDV and traditional DPIV),the results show that the special Pre bias method can improve measurement accuracy with almost one order level and is fit for flow field velocity uniformity measurement.

关 键 词：水洞 流场校测 数字式粒式图像测速 预偏置方法 

分 类 号：O357.54[理学—流体力学]