中文摘要：

研究了利用激光数码全息技术实现两相流三维空间速度场测量的方法。用1台脉冲激光器照射两相流，平面光和颗粒衍射光发生干涉，在数码相机的CCD平面上生成全息图像．用1台跨帧数码像机连续拍摄两相流全息图像，对全息图应用基于小波变换的三维图像重建算法，在计算机上实现物体三维图像的重建，再利用图像互相关测速技术从连续的重建三维图像中提取两相流三维空间的速度场．实验中将2只置于不同空间位置的喷嘴向不同方向喷射雾化的气液两相流，并对生成的流场进行测量。结果表明该方法可以实现两相流三维空间速度场测量.

英文摘要：

Two-phase three dimensional flow veloeimetry by laser digital holography is being presented. The diffraction patterns of two phases flow are recorded by a high speed camera, then the three dimensional images of two-phase flow can be numerically reconstructed from the diffraction pattern based on wavelet transform technology. The three-dimensional velocity field of the two-phase flow can be calculated from the reconstructed images by image cross correlation algorithm. Results show that the method can give reliable three-dimensional velocity field of two-phase flow.