Particle image velocimetry for the measurement of mean and acoustic particle velocities

被引:13
|
作者
Hann, DB
Greated, CA
机构
[1] Fluid Dynamics and Acoustics Group, Department of Physics and Astronomy, University of Edinburgh
关键词
D O I
10.1088/0957-0233/8/6/012
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A novel method is outlined which allows measurement of the amplitude of oscillation of a sinusoidal sound field and the mean flow using particle image velocimetry. The method involves simplifying the interrogation area in such a way that the autocorrelation function contains tour significant peaks. The accuracy is of the order of half pixel resolution, once a constant offset related to the non-continuous nature of the probability function of a sine wave is taken into account. This constant, which originates from the pixelation of the image, is shown to be 0.85 pixels.
引用
收藏
页码:656 / 660
页数:5
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