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Combining CT scan and particle imaging techniques: applications in geosciences.

Bourgault-Brunelle, Corinne; Des Roches, Mathieu; Daigle, Louis-Frédéric; Francus, Pierre; Long, Bernard; Després, Philippe (2016). Combining CT scan and particle imaging techniques: applications in geosciences. In: 4th International Conférence on Image Formation X-Ray Computed Tomography, 18-22 juillet 2016, Bamberg, Allemagne.

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Résumé

A small scale physical model of a river and its bed was built to study sediment transport. This model was installed through a CT scanner in order to validate a data acquisition system coupling a CT scan and a particle image velocimetry (PIV) system. The PIV structure is fixed to the scanner, which moves along 2.6 meters rails. This combined system provides high spatial and temporal resolution measurements of bed density and fluid velocity. The data acquisition is time-synchronized and co-located greatly improving our understanding of the dynamics inside the scanned object. The bed topography and porosity as well as the fluid velocity profiles near the bed were successfully derived. These parameters are essential to link hydrodynamic processes over the bed and sediment transport. The methodology holds promising advancements in experimental sedimentology, and could also find interesting applications in other non-medical fields.

Type de document: (Article)
Mots-clés libres: CT scan; particle image velocimetry (PIV); physical model; particle-fluid dynamics
Centre: Centre Eau Terre Environnement
Date de dépôt: 20 oct. 2016 19:22
Dernière modification: 20 oct. 2016 19:22
URI: http://espace.inrs.ca/id/eprint/4826

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