Emmanuelle Gouillart
Un article de Surface du verre et interfaces.
Research engineer, Saint-Gobain Recherche
Contact information
| Emmanuelle Gouillart Unité mixte Saint-Gobain/CNRS "Surface du Verre et Interfaces" | 
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Research interests and activities
I am a member of the Heterogeneous reactive materials team of the lab, which I have joined at the beginning of 2008 after completing my PhD.
My background is in theoretical and statistical physics. My PhD was realized at Imperial College London with Jean-Luc Thiffeault and at CEA Saclay with Olivier Dauchot on chaotic mixing of viscous fluids in closed and open flows. This work was funded by Saint-Gobain Recherche. We studied experimentally and numerically realistic mixing devices similar to industrial devices (e.g. rod-stirring devices) to examine mixing mechanisms responsible for the homogenization of impurities in fluid. We have evidenced several generic laws for homogenization dynamics; in particular, we have highlighted the influence of no-slip solid boundaries that may slow drastically the mixing rate.
My current research interests and activities are as follows.
- New activities in the Heterogeneous Reactive Materials Team: together with the other members of the team, Marie-Hélène Chopinet, Franck Pigeonneau and Elin Sondergard, we have launched several projects aiming at characterizing physical and physico-chemical phenomena at play during the melting of glass. I take part in the following activities.
- Reactive wetting of silicate liquids on quartz.
- Reactive drainage of viscous fluids in unsaturated porous media (more soon...)
- I also collaborate with Franck Pigeonneau on the evolution of bubbles populations and foams in viscous fluids.
- Current activities on mixing.
- Topological mixing
- Mixing in open flows: homogenization mechanisms and estimation of mixing quality.
Publications
Peer-revieweed publications
- J.-L. Thiffeault, M. D. Finn, E. Gouillart, and T. Hall, Topology of Chaotic Mixing Patterns, submitted to Chaos.
- E. Gouillart, O. Dauchot, B. Dubrulle, S. Roux, and J.-L. Thiffeault, Slow decay of concentration variance due to no-slip walls in chaotic mixing, submitted to Physical Review E.
- E. Gouillart, N. Kuncio, O. Dauchot, B. Dubrulle, S. Roux, and J.-L. Thiffeault, Walls Inhibit Chaotic Mixing, Physical Review Letters 99, 114501, 2007. Featured as a Physics World and Sciences et Avenir news item.
- M. D. Finn, J.-L. Thiffeault, and E. Gouillart, Topological Chaos in Spatially Periodic Mixers, Physica D 221 (1), 92-100, September 2006.
- E. Gouillart, J.-L. Thiffeault, and M. D. Finn, Topological Mixing with Ghost Rods , Physical Review E 73, 036311, March 2006.
Conference proceedings
- J.-L. Thiffeault, E. Gouillart, and O. Dauchot, Speeding Up Mixing with Moving Walls, Paper to be presented at the International Congress of Theoretical and Applied Mathematics, Adelaide, Australia, 25-29 August 2008.
- J.-L. Thiffeault, E. Gouillart, and M. D. Finn, The Size of Ghost Rods, Proceedings of the Workshop on Analysis and Control of Mixing with Applications to Micro and Macro Flow Processes, CISM, Udine, Italy, 27 June–1 July 2005 (Springer-Verlag, 2006, in press).