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Local field correction particle image velocimetry (LFCPIV), is a correlation PIV method able to accurately resolve flow structures smaller than the interrogation window. It presents advantages over conventional PIV, offering an alternative in the field of advanced and super-resolution PIV methods . Within the European project Europiv2, the method has been refined and extensively tested. In the present...
The present study discusses the development of a novel method to interrogate PIV recordings. The technique is introduced as an adaptive resolution in that it is based on the adaptation of the interrogation volume to the local flow field properties. In the first part the evaluation of the PIV spatial resolution based on cross-correlation is discussed. A comparison is proposed between the behaviour...
In the present paper, two advanced PIV algorithms are described and compared with conventional cross-correlation sub-pixel PIV evaluation techniques. The first algorithm is an iterative continuous windows shift technique (CWS). The second, based on the same correlation and peak-finding techniques, includes an image distortion module to improve measurement of velocity gradients. PIV algorithms are...
Improving spatial resolution of optical whole field velocity measurement technique is a challenging task. This topic was addressed in different ways. Complementary to cross-correlation methods, which are presently widely adopted, combination of PIV and PTV is considered. This work discusses different issues involved in the implementation of a hybrid PIV-PTV method. The robustness of the pairing is...
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