AN IMPROVED CROSS-CORRELATION METHOD FOR(DIGITAL)PARTICLE IMAGE VELOCIMETRY

被引：0
|
作者：
翁文国 [1 ]
范维澄 [1 ]
廖光煊 [1 ]
秦俊 [1 ]
机构：
[1] State Key Laboratory of Fire Science,University of Science and Technology of China,Hefei 230026,China
来源：
Acta Mechanica Sinica | 2001年 / 04期
基金：
中国国家自然科学基金;
关键词：
PIV; DPIV; cross-correlation; discrete window offset;
D O I：
暂无
中图分类号：
TP391.41 [];
学科分类号：
080203 ;
摘要：
An improved method that brings enhancement in accuracy for theinterrogation of (digital) PIV images is described in this paper.This method is basedon cross-correlation with discrete window offset,which makes use of a translationof the second interrogation window and rebuilds it considering rotation and shear.The displacement extracted from PIV images is predicted and corrected by means ofan iterative procedure.In addition,tile displacement vectors are validated at eachintermediate of the iteration process.The present improved cross-correlation methodis compared with the conventional one in accuracy by interrogation of synthetic andreal (digital) PIV images and the interrogation results are discussed.
引用
收藏
页码：332 / 339
页数：8
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