The levitation of a sphere by two parallel turbulent jets - Archive ouverte HAL
Article Dans Une Revue Physics of Fluids Année : 2020

The levitation of a sphere by two parallel turbulent jets

Thomas Barois
Guillaume Ricard
  • Fonction : Auteur
Victor Champain
  • Fonction : Auteur
Lucas Gey
  • Fonction : Auteur
Hamid Kellay

Résumé

Two vertical turbulent round jets are used to levitate a spherical particle. First, a symmetric configuration is investigated with the two jets of equal flow rates. A structure reminiscent of a pitchfork bifurcation is reported and characterized between a double trap configuration for low flow rates and a single trap regime at larger flow rates. A second configuration is then studied with the flow rates that differ between the left and the right jets. In this case, a preferential transition towards the jet of higher flow rate is reported and quantified. A model is presented predicting the force field for the symmetric and the asymmetric configurations. The model is compared to the force field measurements realized with a particle on a flexible cantilever. Finally, a particle dynamics simulation is proposed to analyze in more details the transition for the levitation in the symmetric and the asymmetric configurations.
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Dates et versions

hal-02553316 , version 1 (24-04-2020)

Identifiants

Citer

Thomas Barois, Guillaume Ricard, Victor Champain, Lucas Gey, Hamid Kellay. The levitation of a sphere by two parallel turbulent jets. Physics of Fluids, 2020, 32 (4), pp.045111. ⟨10.1063/5.0002955⟩. ⟨hal-02553316⟩

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