Experiments and large eddy simulations on particle interaction with a turbulent air jet impacting a wall

Syphax Ikardouchene (1, 2) , Xavier Nicolas (3) , Stéphane Delaby (1) , Myriem Ould-Rouiss (2)

1 CSTB - Centre Scientifique et Technique du Bâtiment
2 MSME - Laboratoire de Modélisation et Simulation Multi Echelle
3 TCM

Experiments and large eddy simulations are carried out to study the interaction of spherical particles with a turbulent air jet impacting a wall. The context is that of the dynamical air curtains used to separate a contaminated ambiance with passive or inertial particles from a clean ambiance. The jet and particle Reynolds numbers and the Stokes number are respectively equal to Re_j = 13500, 3≤Re_p ≤17 and 0.1≤St≤1.5. The rate of particles that crosses the air jet is analyzed according to the particle size, for two particle injection heights. A non-monotonous passing rate of the particles through the jet with respect to the particle size is observed, probably due to the particles/turbulence interaction.

Mots clés: plane air jet; air curtain; turbulent jet; particle interaction; experiments; LES

Domaines: Mécanique des fluides [physics.class-ph]

Syphax Ikardouchene, Xavier Nicolas, Stéphane Delaby, Myriem Ould-Rouiss. Experiments and large eddy simulations on particle interaction with a turbulent air jet impacting a wall. TI2018, 5th Internationnal conference on Turbulence and Interactions, Jun 2018, Trois-Ilets, Martinique, France. ⟨10.1007/978-3-030-65820-5_14⟩. ⟨hal-02015983⟩