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Erschienen in: Experiments in Fluids 2/2020

01.02.2020 | Research Article

Particle streak velocimetry using ensemble convolutional neural networks

verfasst von: Alexander V. Grayver, Jerome Noir

Erschienen in: Experiments in Fluids | Ausgabe 2/2020

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Abstract

This study reports an approach and presents its open-source implementation for quantitative analysis of experimental flows using streak images and convolutional neural networks (CNN). The latter are applied to retrieve a length and an angle from streaks, which can be used to deduce kinetic energy and directionality (up to an \(180^{\circ }\) ambiguity) of an imaged flow. We developed a quick method for generating essentially unlimited number of training and validation images, which enabled efficient training. Additionally, we show how to apply an ensemble of CNNs to derive a formal uncertainty on the estimated quantities. The approach is validated on the numerical simulation of a convective turbulent flow and applied to a longitudinal libration flow experiment.

Graphic abstract

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Metadaten
Titel
Particle streak velocimetry using ensemble convolutional neural networks
verfasst von
Alexander V. Grayver
Jerome Noir
Publikationsdatum
01.02.2020
Verlag
Springer Berlin Heidelberg
Erschienen in
Experiments in Fluids / Ausgabe 2/2020
Print ISSN: 0723-4864
Elektronische ISSN: 1432-1114
DOI
https://doi.org/10.1007/s00348-019-2876-1

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