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Pré-Publication, Document De Travail Année : 2020

Size-independent phase distinction in dispersed two-phase flows

Résumé

In the study of dispersed two phase flows, having access to the velocities of both phases is necessary to fully understand and study the behaviour of these complex systems. While all data can be obtained in numerical simulations, this can prove more difficult to perform with experimental measurements. In this article, a new method to separate inertial particles from tracers in a two-dimensional laser sheet is described. By using a two camera acquisition system in conjunction with an optical filter, the two phases can successfully be segregated, without relying on an apparent size or intensity difference between inertial particles and tracers. This allows for the velocities and positions of the particles to be measured in conjunction with the velocity field of the carrying phase. A series of tests are performed on the method. In addition to ensuring that the method functions in a satisfactory manner, these tests give indications on how to use the method properly. As an example, measurement results of ceramic particles settling in still water are presented.
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Dates et versions

hal-03026261 , version 1 (26-11-2020)
hal-03026261 , version 2 (08-12-2020)

Identifiants

  • HAL Id : hal-03026261 , version 2

Citer

David de Souza, Till Zürner, Romain Monchaux. Size-independent phase distinction in dispersed two-phase flows. 2020. ⟨hal-03026261v2⟩
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