Preferential concentration of inertial particles
A. CARTELLIER, M. BOURGOIN in collaboration with A. ALISEDA, Univ. of Washington One of the most striking property of turbulent transport of inertial particles (denser than the fluid such as (...)
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Home > Teams > EDT team: Two-Phase flows and turbulences > Research activities > Particles, inclusions and dispersed flows
Particles, inclusions and dispersed flows
The motion of an inclusion coupled to the surrounding fluid shows several levels of complexity depending on the number of degrees of freedom of the inclusions, their number, the nature of the flow (laminar or turbulent) as well as many other factors such as the deformability of the particles, the action of external fields,... The team EDT investigates the fundamental mechanisms of the particle-flow interaction at these levels of complexity.
The team EDT studied for many years the properties of bubble columns in the strong coupling regime (picture below). Recently the case of a freely advected, isolated dense particle has been studied revealing the difficulty to model the impact of the finite size of the particle. It led to study simpler setups. The investigations of the team EDT (mostly experimental) span a large variety of coupling situations, from the isolated particle in a laminar flow to the collective dynamics of particles in a turbulent flow in order to contribute to modeling the transport of particle in a large variety of conditions
Particle transport in turbulent flows
We focus on the understanding of individual and collective behavior of material particles interacting with a turbulent flow in order to improve models of dispersion and transport. We develop (...)
Flow-biofilms interaction in porous media
CARTELLIER A., HUANG Z., SECHET P.
Biofilms play a major role in the water and soil treatment technologies. The understanding of the coupling between the growth of the cell tissue and the (...)
Modeling and simulation of two-phase flow in the oil separator of gas turbines
The secondary air flow sealing the helicopter turbine engine (gas turbine) forms an oil mist as it passes through the bearings lubricated. The separation of these oil inclusions is a key issue (...)
Local hydrodynamics in bubble columns
L’étude des colonnes à bulles est une activité de longue date au sein de l’équipe. Les colonnes à bulles sont couramment utilisées dans l’industrie, mais nous manquons encore d’outils prédictifs fiables (...)
Flow in non-confined vs strongly confined media
CARTELLIER A., SECHET P.
En milieu non confiné, les inclusions en mouvement relatif par rapport à la phase continue induisent des fluctuations de vitesse au sein de la phase porteuse. Cette (...)
Dynamics of pendular and towed systems
Nous nous intéressons à la dynamique et à la stabilité de pendules simples (mouvement contraint à 1D) et et de systèmes tractés (mouvement contraint à 2D) en fort couplage avec le fluide environnant, (...)