An improved cross-correlation method for (digital) particle image velocimetry

被引：0
|
作者：
Weng Wenguo
Fan Weicheng
Liao Guangxuan
Qin Jun
机构：
[1] University of Science and Technology of China,State Key Laboratory of Fire Science
来源：
Acta Mechanica Sinica | 2001年 / 17卷
关键词：
PIV; DPIV; cross-correlation; discrete window offset;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
An improved method that brings enhancement in accuracy for the interrogation of (digital) PIV images is described in this paper. This method is based on cross-correlation with discrete window offset, which makes use of a translation of the second interrogation window and rebuilds it considering rotation and shear. The displacement extracted from PIV images is predicted and corrected by means of an iterative procedure. In addition, the displacement vectors are validated at each intermediate of the iteration process. The present improved cross-correlation method is compared with the conventional one in accuracy by interrogation of synthetic and real (digital) PIV images and the interrogation results are discussed.
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页码：332 / 339
页数：7
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