The Xeuss 2.0 (Xenocs) Small Angle X-ray Scattering laboratory beamline of the FERMaT research federation is housed at LGC on the Rangueil Campus. It is equipped with a Pilatus 1M HPC detector (DECTRIS). It benefitted from several upgrades such as a microfocus GeniX 3D Cu microsource, an automatized pinhole selector, a robot for sample preparation, several flow cells, etc. 

Contact: P. Roblin. 

Development of laser/light based non-intrusive measurement techniques applied to single and two-phase flows, such as Planar Laser Induced Fluorescence for the determination of liquid and gas dissolved concentrations or temperature, stereo-correlation techniques to reconstruct 3D liquid/liquid or solid/liquid interfaces and velocimetry measurement techniques  (Molecular Tagging Velocimetry, Particle Image Velocimetry, Optical Flow techniques) 

Contact: E. Cid. 

DIVA is a CFD code for multiphase flows based on a DNS approach (Direct Numerical Simulation). It handles gas-liquid flows with bubbles or liquid-liquid flows with droplets, by using a Level-Set method for interface capturing coupled to the Ghost-Fluid Method to enforce jump conditions across interfaces.

DIVA captures the dynamics of deformable interfaces, and can incorporate heat and mass transfer processes across the interface, possibly including phase change phenomena. It also models complex rheological properties (surface viscosity and elasticity) for the interface, as encountered with surfactant-laden droplets in emulsions.

Contact in the CFC team: B. Lalanne.
Main developper: S. Tanguy from IMFT. 

JADIM is a CFD code that allows to investigate a wide variety of multiphase flows. 

 This includes  liquid-liquid and gas-liquid flows with interface capture and wetting as well as dilute to dense suspension flows where hydrodynamic interactions are fully resolved at the particle scale. The code allows spanning a wide range of hydrodynamic regimes, from laminar flows in complex geometries to turbulent wall-bounded flows.

It is developed and entertained thanks to the  collaboration with several researchers at IMFT (Dominique Legendre, Jacques Magnaudet, Thomas Bonometti and Eric Climent) and the service cosinus (Pierre Elyakime). 

Contact in the CFC team: M. Abbas. 

PoBoS is a code allowing to study the structuration and thermodynamics of dispersions of charged nanoparticles with arbitrary geometries and undergoing many-body electrostatic forces. 

Colloid configurations are evolved with a standard Brownian Dynamics (BD) algorithm. Ion distributions are treated at the mean-field level: at each BD time step, the (modified) non-linear Poisson-Boltzmann equation is solved in the complex fluid domain delimited by the surfaces of colloids and the Laplace equation is solved inside the colloids. Many-body electrostatic forces are then determined for arbitrary particle geometries by numerical integration of the excess osmotic stress tensor and used in the BD algorithm. 

With this method, no arbitrary interaction potentials  between colloids are used. The approach thus allows to measure effective interaction potentials and to determine reliable equations of state and dispersion meso-structures.

Contact: Y. Hallez.