Universal outlier detection for PIV data

被引:961
作者
Westerweel, J [1 ]
Scarano, F
机构
[1] Delft Univ Technol, Lab Aero & Hydrodynam, Delft, Netherlands
[2] Delft Univ Technol, Dept Aerosp Engn, Delft, Netherlands
关键词
D O I
10.1007/s00348-005-0016-6
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
An adaptation of the original median test for the detection of spurious PIV data is proposed that normalizes the median residual with respect to a robust estimate of the local variation of the velocity. It is demonstrated that the normalized median test yields a more or less 'universal' probability density function for the residual and that a single threshold value can be applied to effectively detect spurious vectors. The generality of the proposed method is verified by the application to a large variety of documented flow cases with values of the Reynolds number ranging from 10(-1) to 10(7).
引用
收藏
页码:1096 / 1100
页数:5
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