Výsledky vyhledávání - "Ragouilliaux, Alexandre"

Dissertation/ Thesis

Etude rhéophysique de systèmes émulsions inverses / argile organophile. Applications au boues de forage pétrolier

Autor: Ragouilliaux, Alexandre

La formulation optimale des fluides thixotropes est essentielle dans de nombreux procédés, par exemple dans le domaine des forages pétroliers. Ceci passe par une compréhension fine des liens entre les évolutions de leur microstructure et leurs p

Externí odkaz: http://tel.archives-ouvertes.fr/tel-00320083
http://tel.archives-ouvertes.fr/docs/00/32/00/83/PDF/These_-_A._Ragouilliaux.pdf

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Report

Transition from a simple yield stress fluid to a thixotropic material

Autor: Ragouilliaux, Alexandre, Ovarlez, Guillaume, Shahidzadeh-Bonn, Noushine, Herzhaft, Benjamin, Palermo, Thierry, Coussot, Philippe

Publikováno v: Physical Review E: Statistical, Nonlinear, and Soft Matter Physics 76 (2007) 051408

From MRI rheometry we show that a pure emulsion can be turned from a simple yield stress fluid to a thixotropic material by adding a small fraction of colloidal particles. The two fluids have the same behavior in the liquid regime but the loaded emul

Externí odkaz: http://arxiv.org/abs/1004.2655

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Report

Wide-gap Couette flows of dense emulsions: Local concentration measurements, and comparison between macroscopic and local constitutive law measurements through magnetic resonance imaging

Autor: Ovarlez, Guillaume, Rodts, Stéphane, Ragouilliaux, Alexandre, Coussot, Philippe, Goyon, Julie, Colin, Annie

Publikováno v: Physical Review E: Statistical, Nonlinear, and Soft Matter Physics 78 (2008) 036307

Flows of dense emulsions show many complex features among which long range nonlocal effects pose a problem for macroscopic characterization. In order to get around this problem, we study the flows of several dense emulsions in a wide-gap Couette geom

Externí odkaz: http://arxiv.org/abs/0810.3497

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Rheophysical study of invert emulsions / organoclay systems. Applications to drilling muds

Autor: Ragouilliaux, Alexandre

Publikováno v: Dynamique des Fluides [physics.flu-dyn]. Université Pierre et Marie Curie-Paris VI, 2007. Français

Control of properties and optimization of the formulation of thixotropic fluids is essential in a lot of industrial applications, like in the oil industry. It implies a better understanding of the link between the microstructure evolutions and the fl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::988dc73d5072ab6f1da65eb4a7ba3df5
https://theses.hal.science/tel-00320083

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