Abstract
When traditional Digital Particle Image Velocimetry(DPIV) is used to measure water spray particles,the elongated image from a common CCD will effect the measuring results.To eliminate the effect of the elongated image of water spray particles,an Improved Image Method(IIM) was built based on DPIV.An experiment system was designed to make a real-time test for the water spray,by which the difference of measured particle sizes obtained by the improved image method and the direct equal method was contrasted.The results show that the algorithm used in this paper is more available to measure the radius of water spray particle.The radius distribution curve is fitted by least square method,which shows that both the lognormal function and Weibull function can describe the radius distribution well.
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