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Book Sections Year : 2021

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

Expériences et simulations sur l'interaction de particules avec un jet d'air turbulent impactant une paroi

Abstract

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. In the present study, the jet and particle Reynolds numbers and the jet and turbulence Stokes numbers are respectively equal to Re_j = 13500, 0.7 ≤ Re_p ≤ 3.5, 0.02 ≤ St_j ≤ 0.35 and 0.1 ≤ St_t ≤ 1: they mainly concern passive particles. The rate of the particles that cross the air jet is analyzed according to the particle size, for two particle injection heights. A non-monotonic passing rate of the particles through the jet with respect to the particle size is observed in the experiments.
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hal-02642594 , version 1 (28-05-2020)

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Syphax Ikardouchene, Xavier Nicolas, Stéphane Delaby, Meryem Ould-Rouiss. Experiments and large eddy simulations on particle interaction with a turbulent air jet impacting a wall. Deville M. et al. (eds). Turbulence and Interactions. TI2018, 149, Springer; Springer International Publishing, pp.136-143, 2021, Notes in Numerical Fluid Mechanics and Multidiscipliary Design, 978-3-030-65819-9. ⟨10.1007/978-3-030-65820-5_14⟩. ⟨hal-02642594⟩
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