Fabien Ternat

Within the group of energies of the Research Laboratory in Geosciences and Energies (LARGE), I contribute to the development of low consumption habitat, and in particular on the topic of convection and natural ventilation of buildings during warm seasons in the South of continental France and French Caribean islands. This problematic set aside from projects comes back thanks to new policies of controlling costs and building management. The objective is to model, control and optimize natural ventilation to limit the use of active systems of air treatment and conditioning. This project lays on the modelling of convective phenomenons inside buildings and passive aeraulic components. This way constitutes a technological breakout respect to existing solutions for air condition.
In details, I study an experimental device of passive air conditioner derived from a simplified model of habitat. It deals with an installation generating a natural asymmetric convection flow, whose characteristics remain badly known. Using laser techniques of velocimetry (LDV), I manage the parametric study of this experience, from data acquisition to interpretation, passing throught post-processing.
Objectives of this work are both feeding the scientific literature with a reliable database (publication and peer analyse of results) and allowing the development of technological transfers from academics towards industries providing the key tools for the next generation of buildings.

Texas A&M University, College Station (USA)
- Dvelopment of a computational code for inverse problems of advection/diffusion.
Collaboration CEMAGREF (Aix-En-Provence) – IRSN (Cadarache) – IRPHE (Marseille)
- Management of natural risks on geomaterial erosion (ERINOH project).
- Supervision of a engineer student.
Universidad Técnica Federico Santa María, Valparaíso (Chili)
- Management of project in applied mathematics: creation of computational code for inverse problems of advection/diffusion.
- Teaching mathematics in Spanish (Post-grade).

Porject management on nuclear risk: erosion of cohesive sediment in self-weight consolidation (300k€).
Operational modelling of a parameter for medium and long term transfers of contaminants/sediments in water.
Project management of experimental qualification of HERODE flume (laser velocimetry).
Experimental work: natural sediment sampling, laboratory erosion, soil analysis.
Analytical and numerical modelling.
Collaborations: European group on hydraulic work break by erosion (EWG Internal Erosion); Plan pluri-formation "Erosion, Sédimentation et Glissement"; BIOFLOW network (6th Programme Cadre de Recherche et Développement); research group on particle dynamics (GDR Midi).

Project management for nuclear risk: monitoring of technological development, planning, execution, synthesis.
Parameterization of a computational code for contaminant transfers.
Experimental work and modelling for characterizing kinetic classes of settling particles.
Technics employed: laser velocimetry, sedimentology.