Výsledky vyhledávání - "Olivier Bonnefoy"

Akademický článek

VELOCITY FIELD COMPUTATION IN VIBRATED GRANULAR MEDIA USING AN OPTICAL FLOW BASED MULTISCALE IMAGE ANALYSIS METHOD

Autor: Johan Debayle, Ahmed Raihane, Abdelkrim Belhaoua, Olivier Bonnefoy, Gérard Thomas, Jean-Marc Chaix, Jean-Charles Pinoli

Publikováno v: Image Analysis and Stereology, Vol 28, Iss 1, Pp 35-43 (2011)

An image analysis method has been developed in order to compute the velocity field of a granular medium (sand grains, mean diameter 600 μm) submitted to different kinds of mechanical stresses. The differential method based on optical flow conservati

Externí odkaz: https://doaj.org/article/0fb6cca135c140a0ad28b18d94f8a226

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Qualitative and quantitative DEM analysis of cohesive granular material behaviour in FT4 shear tester

Autor: Abibatou Ndiaye, Xavier Bednarek, Haithem Louati, Sylvain Martin, Olivier Bonnefoy

Publikováno v: Chemical Engineering Research and Design
Chemical Engineering Research and Design, Elsevier, 2019, 148, pp.155 à 163. ⟨10.1016/j.cherd.2019.05.059⟩

International audience; The macroscopic behaviour of cohesive granular material in the FT4 shear tester is studied using the discrete element method (DEM). The shear test is simulated faithfully to the experimental procedure (filling, compaction, pre

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::31b325885652be63824fa3ca875faf50
https://doi.org/10.1016/j.cherd.2019.05.059

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Characterization of the incorporation of a granular medium into elastomer matrices during mixing process

Autor: Nikhil Tembhurnikar, Jean‐Charles Majesté, Sylvain Martin, Olivier Bonnefoy

Publikováno v: Journal of Applied Polymer Science. 139:52280

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::18947a3dee081dfc675777b2126b14a0
https://doi.org/10.1002/app.52280

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A new SPH density formulation for 3D free-surface flows

Autor: Bertrand Stepnik, S. Adami, Olivier Bonnefoy, Sandra Geara, Jérôme Allenou, Sylvain Martin, Winfried Petry

Publikováno v: Computers & Fluids. 232:105193

In this paper, a new density formulation for free surface simulations using SPH is presented. This new approach is applicable to surface-tension driven free surface flows with strong topological changes. The density is corrected for each particle by

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::065d6277b38a70473a7f3edf40b8fd7f
https://doi.org/10.1016/j.compfluid.2021.105193

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Méthode de Boltzmann sur réseau - Application à la mécanique des fluides

Autor: Olivier Bonnefoy, Sylvain Martin

Publikováno v: Mathématiques.

Cet article est une introduction a la methode de Boltzmann sur reseau. Il s’agit d’une methode de CFD eulerienne particulierement bien adaptee pour simuler des domaines avec des geometries complexes. Elle permet de nombreux couplages multiphysiqu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::184f916dd3c5621382a59c5e1d210601
https://doi.org/10.51257/a-v1-bm5220

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Extrapolation of DEM simulations to large time scale. Application to the mixing of powder in a conical screw mixer

Autor: Abibadou Ndiaye, Sylvain Martin, Olivier Bonnefoy, Véronique Peres, Xavier Bednarek

Publikováno v: Chemical Engineering Science
Chemical Engineering Science, Elsevier, 2019, 197, pp.223-234. ⟨10.1016/j.ces.2018.12.022⟩

International audience; The paper proposes an original algorithm which allows a long time scale extrapolation of DEM results at a very low computational cost. This algorithm can be adapted to any periodic processes. In this study, it is applied to th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2297550530acd8c011d7f76d270b48b0
https://hal.archives-ouvertes.fr/hal-01968891

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Reactor scale study of self-heating and self-ignition of torrefied wood in contact with oxygen

Autor: Patricia Arlabosse, Jean-Louis Dirion, Alexandre Govin, Sylvain Salvador, Olivier Bonnefoy, Brieuc Evangelista

Publikováno v: Fuel
Fuel, Elsevier, 2018, 214, pp.590-596. ⟨10.1016/j.fuel.2017.11.048⟩

International audience; This experimental work aims at investigating the potential development of self-heating when torrefied wood chips enter into contact with oxygen. Two kilograms of dried beech chips have been torrefied under nitrogen in a cylind

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::02ca3cc747f171f500dcbdb976552a3a
https://hal.archives-ouvertes.fr/hal-01650705/document

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Etude par radiographie ultrarapide des transformations et du rôle des matériaux lors du fonctionnement d’un fusible

Autor: Xavier Just, Olbinado, Margie P., Pierre Lhuissier, Jean-Louis Gelet, Alexander Rack, Olivier Bonnefoy, Gérard Thomas, Rémy Dendievel, Jean-Marc Chaix

Publikováno v: Journées Annuelles SF2M-JA 2017 "Matériaux, Microstructures et Fonctionnalités"
Journées Annuelles SF2M-JA 2017 "Matériaux, Microstructures et Fonctionnalités", Section Sud-Est de la SF2M ; Laboratoire MATEIS de l’INSA de Lyon; Laboratoires CETHIL de l’INSA de Lyon; Membres de la fédération d’ingénierie Lyon Saint Etienne (Ingélyse); Membres de l’Institut Carnot I@L., Oct 2017, Lyon, France
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Thème général: "Matériaux, Microstructures et Fonctionnalités"; National audience; La radiographie RX ultrarapide, jusqu’à 5 106 images/sec, a été utilisée pour étudier in situ le comportement des éléments d’un fusible industriel, lam

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::d02b40d6fc5212d2b9abc9bfb8512485
https://hal.archives-ouvertes.fr/hal-01538109/document

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