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A macroscopic model for the impregnation process of composite material by a concentrated suspension

hal.structure.identifierHERAKLES - SAFRAN
dc.contributor.authorDUGOIS, Kevin
hal.structure.identifierLaboratoire de Modélisation et Simulation Multi Echelle [MSME]
dc.contributor.authorVINCENT, Stéphane
dc.contributor.authorLASSEUX, Didier
IDREF: 131294474
dc.contributor.authorARQUIS, Eric
hal.structure.identifierHERAKLES - SAFRAN
dc.contributor.authorDESCAMPS, Cédric
dc.date.accessioned2021-05-14T09:56:37Z
dc.date.available2021-05-14T09:56:37Z
dc.date.issued1992
dc.date.conference2015-09
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/77804
dc.description.abstractEnIn order to improve thermal, mechanical behavior and weight of our turbine blades, we need to use a new composite material. The manufacturing process to obtain this composite is intricate and requires a fluid densification process consisted of two parts. Firstly, particles are introduced in the reinforcement thanks to a pressure-driven flow, where they're retained by a filtration membrane. By reducing porosity, we improve the capillarity infiltration of a melted metal which can react with particles (second part). In this present study, we carry out a model that can describe physics of particles' introduction in our material. Given that we wanted to simulate flow at fibers scale and considering average particles' size is about a micrometer, we decided to use the volume fraction of particles Φ to describe our colloidal suspension. Thus, suspension flow can be resolved with the Navier-Stokes equations of mass and momentum conservation. To evaluate the particle's concentration field, a diffusion equation is introduced. Originally developed by Leighton et al [1], then improved by Phillips et al [2] this equation describes the migration of particles in a sheared flow. At last, the viscosity dependence of volume fraction is given by Krieger [3]: μ (Φ)= (1−Φ /Φ max) η Φ max Due to the filtration membrane presence, our process is similar to the dead-end filtration developed in microfiltration process [4]. Thus, we easily observe the sieving mechanism with formation of a growing cake that can be seen as a porous media. In the cake, our model describes a macroscopic flow of aqueous fluid in a porous media composed of rigid spheres. Microfiltration process can also provide theoretical law over temporal evolution of the cake-layer thickness. Before testing our model over realistic geometries, it was evaluated with experiments [5]. Then, our work consisted of two parts: 2D parametric studies and strong 3D simulations over RVE. References [1] Leighton, D. and Acrivos, A. (1987). The shear-induced migration of particles in concentrated suspensions.
dc.language.isoen
dc.title.enA macroscopic model for the impregnation process of composite material by a concentrated suspension
dc.typeCommunication dans un congrès avec actes
dc.subject.halSciences de l'ingénieur [physics]/Mécanique [physics.med-ph]/Mécanique des fluides [physics.class-ph]
bordeaux.hal.laboratoriesInstitut de Mécanique et d’Ingénierie de Bordeaux (I2M) - UMR 5295*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionBordeaux INP
bordeaux.institutionCNRS
bordeaux.institutionINRAE
bordeaux.institutionArts et Métiers
bordeaux.countryPL
bordeaux.title.proceedingEuromat 2015
bordeaux.conference.cityWarsaw
bordeaux.peerReviewedoui
hal.identifierhal-01172315
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01172315v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.date=1992&rft.au=DUGOIS,%20Kevin&VINCENT,%20St%C3%A9phane&LASSEUX,%20Didier&ARQUIS,%20Eric&DESCAMPS,%20C%C3%A9dric&rft.genre=proceeding


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