A5062200938- Lattice Boltzmann Simulation Studies
- Advanced Numerical Methods in Computational Mathematics
- Polymer Foaming and Composites
- Advanced Mathematical Modeling in Engineering
- Granular flow and fluidized beds
- Composite Material Mechanics
- Rheology and Fluid Dynamics Studies
- Epoxy Resin Curing Processes
- Fluid Dynamics and Heat Transfer
- Textile materials and evaluations
- Powder Metallurgy Techniques and Materials
- Metallurgy and Material Forming
- Enhanced Oil Recovery Techniques
- Surface Modification and Superhydrophobicity
- Computational Fluid Dynamics and Aerodynamics
- Fluid Dynamics Simulations and Interactions
- Injection Molding Process and Properties
- Heat and Mass Transfer in Porous Media
- Advancements in Photolithography Techniques
- Polymer Nanocomposites and Properties
- Advanced ceramic materials synthesis
- Additive Manufacturing and 3D Printing Technologies
- Innovations in Concrete and Construction Materials
- Adhesion, Friction, and Surface Interactions
- Advanced Numerical Analysis Techniques
Université Claude Bernard Lyon 1
2017-2023
Mines Saint-Étienne
2014-2023
Georges Friedel Laboratory
2009-2023
Centre National de la Recherche Scientifique
2011-2023
Centre des Matériaux
2010-2022
Laboratoire de Tribologie et Dynamique des Systèmes
2009-2017
École Nationale Supérieure des Mines de Paris
2003-2011
PlasticsEurope
2010
Centre de Mise en Forme des Matériaux
2003-2007
Université Laval
2006
Abstract This paper proposes to use the metric properties of distance function between two bodies in contact (or gap function) simulations involving problems. First, normal vectors, which are involved formulation condition, defined through gradient this function. definition avoids deal with numerical penetration parameter, is generally introduced otherwise. Furthermore, it allows problem be extended a simple way an Eulerian formulation. Second, investigates mesh adaptation strategies based...
SUMMARY The aim of this work is to focus on the Stokes–Darcy coupled problem in order simulate numerically, with finite element method, composite manufacturing processes based liquid resin infusion. In study, a macroscopic description used. computational domain can be divided into two non‐miscible sub‐domains: purely fluid and porous medium. domain, flows according Stokes equations, while medium, preforms Darcy equations. Specific conditions have considered fluid/porous medium interface....
This article proposes a numerical strategy to simulate the mass transport by surface and lattice diffusion into granular packing. is based on two cornerstones. First, developed approach Eulerian description of problem: grains are described using Level‐Set function, can evolve through fixed mesh, with respect physical laws. In this way, mesh does not experience large distortions topological changes, such as formation necks or closed porosity, implicitly taken account method. Second,...
Abstract A comparison between experiment and numerical simulation of microwave heating a parallelepipedic silicon carbide (SiC) sample is presented. Using a‐2.45 GHz single‐mode cavity, the evolution surface temperature first experimentally studied for different orientations sample. finite element analysis this electromagnetic‐thermal coupled problem then conducted with COMSOL Multiphysics ® software. Despite approximations our model, good agreement experimental results found, confirming...
Abstract Within the context of sintering process simulation, this paper proposes a numerical strategy for direct simulation matter transport by surface diffusion, in two and three dimensions. The level set formulation diffusion problem is first established. resulting equations are solved using finite element method. A stabilization technique then introduced, order to avoid spurious oscillations grain boundary that consequence dependence velocity on fourth‐order derivative function....
SUMMARY A numerical method for simulating fluid–elastic solid interaction with surface tension is presented. level set used to capture the interface between bodies and incompressible surrounding fluid, within an Eulerian approach. The mixed velocity–pressure variational formulation established global coupled mechanical problem discretized using a continuous linear approximation in both velocity pressure. Three ways are investigated reduce spurious oscillations of pressure that appear at...
A bifluid–solid contact model involving surface tension and wetting effects is developed within a finite element framework, in order to provide an accurate characterization of the fluids fibrous behaviours during Liquid Composite Molding processes. This based on Eulerian approach two immiscible fluid (resin/air) domains with boundary conditions which prescribe phenomena at fluid/fiber interfaces. The interface described by Level Set method, capillary force considered. Numerical simulations...
The article exposes robust finite element solutions for coupling flows in both purely fluid region, ruled by Stokes equations, and a porous region of low permeability (down to 10−15 m2) governed Darcy's equations. Relying on stabilised FE formulations, two different numerical strategies are investigated Stokes–Darcy flows: decoupled strategy, based the use matching meshes spaces discretising coupled system; unified or monolithic consisting defining one single mesh computational domain,...
Abstract In the framework of foam process modelling, this paper presents a numerical strategy for direct 3D simulation expansion gas bubbles into molten polymer. This is due to overpressure. The polymer assumed be incompressible and behave as pseudo‐plastic fluid. Each bubble governed by simple ideal law. velocity pressure fields, defined in liquid Stokes system, are subsequently extended each way not perturbing interface velocity. Hence, global velocity–pressure‐mixed system solved over...
This paper introduces a numerical method able to deal with general bi-fluid model integrating capillary actions. The relies first on the precise computation of surface tension force. Considering mathematical transformation virtual work, regularity required for solution evolving curved interface is weakened, and mechanical equilibrium triple line can be enforced as natural condition. Consequently, contact angles liquid over solid phase result naturally from this equilibrium. Second, an...
Nous présentons une méthode d'interaction fluide-structure basée sur approche monolithique eulérienne permettant d'étudier à différentes échelles les procédés de mélange sous leur aspect dispersif et distributif. Une première macroscopique traitant la résolution mécanique dans le procédé, où interviennent des outils tournants, est présentée, puis microscopique modélisant dispersion d'un agglomérat, enfin couplée via théorie cinétique.
The present contribution is devoted to developing robust finite element solutions for coupling flows in both purely fluid region, ruled by Stokes equations, and fibrous preform region governed a Darcy's law.Particularly the cases of low permeability preform, down 10 -15 m 2 , are interest model LCM processes.Flows solved using mixed elements stabilized with sub-grid scale stabilization technique (ASGS).A special attention paid interface conditions, namely normal stress velocity continuity...
In this article, we investigate a space-time finite element method for solving the convection-diffusion-reaction equation. This is based on discontinuous Galerkin technique using low order elements in space and high time. The suggested applied to solve transport equation heat 3D mold filling. An original mixed approach investigated steady diffusion proposed numerical scheme validated through analytical examples, then industrial simulations injection molding process. Several examples show...
The aim of this work is to focus on the Stokes-Darcy coupled problem in order propose a robust monolithic approach simulate composite manufacturing process based liquid resin infusion. computational domain can be divided into two non-miscible sub-domains: purely fluid and porous medium. In domain, flows according Stokes' equations, while preforms Darcy's equations. Specific conditions have considered fluid/porous medium interface. Under effect mechanical pressure applied high deformable...
Abstract A numerical strategy, based on an adaptive finite element method, is proposed for the direct two‐dimensional simulation of expansion small clusters gas bubbles within a Newtonian liquid matrix. The velocity and pressure fields in are first defined through Stokes equations subsequently extended to bubbles. liquid–gas coupling imposed stress exerted by (ruled ideal law) surface tension. level set combined with mesh adaptation technique, used track interfaces. Many simulations...