On image pre-processing for PIV of single- and two-phase flows over reflecting objects

被引：35

作者：

Deen, Niels G. ^{[1
]}

Willems, Paul ^{[1
]}

Annaland, Martin van Sint ^{[1
]}

Kuipers, J. A. M. ^{[1
]}

Lammertink, Rob G. H. ^{[1
]}

Kemperman, Antoine J. B. ^{[1
]}

Wessling, Matthias ^{[1
]}

van der Meer, Walter G. J. ^{[1
]}

机构：

[1] Univ Twente, Fac Sci & Technol, IMPACT, NL-7500 AE Enschede, Netherlands

来源：

EXPERIMENTS IN FLUIDS | 2010年 / 49卷 / 02期

关键词：

Image processing;

D O I：

10.1007/s00348-010-0827-y

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

A novel image pre-processing scheme for PIV of single- and two-phase flows over reflecting objects which does not require the use of additional hardware is discussed. The approach for single-phase flow consists of image normalization and intensity stretching followed by background subtraction. For two-phase flow, an additional masking step is added after the background subtraction. The effectiveness of the pre-processing scheme is shown for two examples: PIV of single-phase flow in spacer-filled channels and two-phase flow in these channels. The pre-processing scheme increased the displacement peak detectability significantly and produced high quality vector fields, without the use of additional hardware.

引用

页码：525 / 530

页数：6

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