【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 ,适用于流场校测更多还原

【Abstract】 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.更多还原