A digital mask technique for reducing the bias error of the correlation-based PIV interrogation algorithm

被引：41

作者：

Gui, L ^{[1
]}

Merzkirch, W ^{[1
]}

Fei, R ^{[1
]}

机构：

[1] Univ Essen Gesamthsch, Lehrstuhl Stromungslehre, D-45117 Essen, Germany

来源：

EXPERIMENTS IN FLUIDS | 2000年 / 29卷 / 01期

关键词：

D O I：

10.1007/s003480050423

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In this paper the bias phenomenon in the evaluation of PIV recordings by using the correlation-based interrogation algorithm is discussed, and a digital mask technique, that can effectively reduce the bias error, is introduced. The correlation-based interrogation algorithm, when masked with a Gaussian window function, can achieve a higher evaluation accuracy not only for PIV recordings of flows with small velocity gradients, but also for that of flows with large gradients.

引用

页码：30 / 35

页数：6

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