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		The UMR CNRS 6595 is a research laboratory which is part of the Mechanics - Energetics Department (IUSTI). This important research unit, which is wholly established on the premises of the Mechanics - Energetics Department, not only participates in research development, but also takes a very active part in training the engineers. 112 staff work at the laboratory, including 53 lecturers / researchers and CNRS researchers, 24 ITAs (Technical & Administrative Engineers) and IATOs (Technical, Administrative and Working Engineers) and 30 doctoral students. Over the last four years, it has produced 53 thesis and more than 460 publications or communications. It has also dealt with more than 64 feasibility studies. This centre, which coordinates doctoral training and the Mechanic - Energetics DEA (Post-Graduate Diploma) of Aix-Marseille I University, also makes up an important part of the "Physical Mechanics and Modelling" Doctoral School. The centre, which is very well known amongst the national and international scientific community and the industrial world, represents one of the school's major strengths. It is developing through two main projects: setting up a departmental research centre into circulating fluidised beds and the thermal treatment of waste, and the joint development, together with the neighbouring UMR 6594 (IRPHE), of a test platform for high-speed flows Research is based on three vital themes : . granular environments in dry, diluted, dense or reactive aspects . complex, hypersonic, reactive and diphasic flows . the physics of transfers with infrared radiation, instabilities, interface phenomena and molten baths

Granular environments

Several teams from the Unit are carrying out studies into granular environments. This theme brings the teams together, not only because of the shared reflection required, but also because of the pooling of experimental techniques (laser and visualisation techniques, etc) and the digital methods used to modelise the flow of fluids containing solid particles.

Areas of research are developing on this theme, such as :
. the hydro-aerodynamics of the flow of fluids containing particles with circulating fluidised beds, the flow of suspensions and powders, the sedimentation of fibres, the drying of grains and fibres
. the transport properties and the transfer of heat and mass in granular materials with porous environments, binary mixtures of conductor / insulator grains
. the modelling of reactive flows in granular environments
. ebullition in porous environments
. dry, granular flows


Complex flows

The analysis of complex flows, whether at high speeds and / or at high enthalpy, requires an experimental procedure using a shock tube or hypersonic windtunnel, with diagnosis using Raman spectrometry. At the same time, the theoretic approach and the digital simulation of these types of flows are the essential tools for understanding and applying these phenomenon.

One can note on this theme :
. experiments in shock tubes, and in hypersonic and supersonic windtunnels
. the modelling of collisional interactions between diatomic molecules, and the determination of the transport properties of unbalanced gaseous mixtures
. the digital modelling of high-speed flows, flows in a nozzle, and reactive flows


The physics of transfers

This theme covers the research areas in which thermodynamic and thermal aspects are important. This is the case with infrared radiation, convective or solutal instabilities, interfacial mechanisms, and engineering procedures using molten baths.

In this area, one can note important experimental activity, with notably :
. the determination of the thermodynamic and thermal properties of materials
. the modelling of phase diagrams
. molten salt databases
. modelling of thermal systems and processes
. infrared metrology
. identification of thermal parametres
. phase change
. instabilities


For more information > http://iusti.polytech.univ-mrs.fr/