Modeling and correction of peak-locking in digital PIV

被引：34

作者：

Cholemari, Murali R. ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Appl Mech, New Delhi 110016, India

来源：

EXPERIMENTS IN FLUIDS | 2007年 / 42卷 / 06期

关键词：

D O I：

10.1007/s00348-007-0300-8

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The systematic tendency of PIV evaluations to bias towards integral pixel values is known as peak-locking. These errors, although small, significantly affect the statistics extracted from such measurements. In this paper, the process by which such errors accrue is modeled, and a scheme for the removal of the same is suggested. Specifically, the modeling process considers FFT PIV with discrete window offset. The results are applied to actual situations and the results are found to be encouraging. The process is computationally inexpensive, and can be applied as a post processing technique to existing data to correct peak-locking.

引用

页码：913 / 922

页数：10

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