Comparison of Holographic and Tomographic Particle-Image Velocimetry Turbulent Channel Flow Measurements
Comparison of Holographic and Tomographic Particle-Image Velocimetry Turbulent Channel Flow Measurements
复制标题
全息和断层粒子图像测速湍流通道流测量的比较
DOI：
10.1088/1742-6596/318/2/022019
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
W. Schröder
中科院分区：
文献类型：
--
作者：
L. Schäfer;W. Schröder
基于充分发展的槽道湍流的速度测量，比较了全息和层析粒子图像测速（PIV）方法。这一比较的重点是时间相关的三维小尺度流动结构的测量，即，在泰勒尺度的数量级上的特征长度的结构，因为这样的流动模式可以很难捕捉到任何二维实验技术。研究结果表明，全息PIV方法是有用的，以测量在较大的体积，而层析PIV应用于解决三维小尺度结构的流动模式。
Based on velocity measurements of a fully developed turbulent channel flow, the methods of holographic and tomographic particle-image velocimetry (PIV) are compared. The emphasis of this comparison is on the measurement of time-dependent three-dimensional small-scale flow structures, i.e., structures at a characteristic length on the order of the Taylor scale since such flow patterns can be hardly captured by any two-dimensional experimental technique. The findings show that the holographic PIV method is useful to measure flow patterns in larger volumes whereas the tomographic PIV should be used to resolve three-dimensional small-scale structures.