【摘要】 研究了一种三维粒子图像测速技术——偏置圆速粒子图像测速法 .根据 CVB- PIV采集粒子影像曲线基本原理 ,对几种已知运动进行了实验研究 .原理分析和实验结果表明CVB- PIV采用灰度图能够确定粒子的三维位置信息 ,获取粒子速度时间序列 ,而且不存在方向模糊性 .更多还原

【Abstract】 A new technique for 3-dimensional particle image velocimetry(PIV) using circular velocity bias,CVB-PIV,has been studied.The particle reflection images theory of CVB-PIV and equation of reflection bias have been given.Then,several known motions were studied by CVB-PIV.Theoretical analysis and experimental results of several movements show that three components of location and temporal sequence of velocity of particle can be obtained accurately by using CVB-PIV.更多还原