Fluctuations in inertial dense homogeneous suspensions | Zendy

Élise Alméras | Zendy; Olivier Masbernat | Zendy; Frédéric Risso | Zendy; Rodney O. Fox | Zendy

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Fluctuations in inertial dense homogeneous suspensions

Author(s) -

Élise Alméras,

Olivier Masbernat,

Frédéric Risso,

Rodney O. Fox

Publication year - 2019

Publication title -

physical review fluids

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.244

H-Index - 37

eISSN - 2469-9918

pISSN - 2469-990X

DOI - 10.1103/physrevfluids.4.102301

Subject(s) - inertial frame of reference , homogeneous , mechanics , phase (matter) , function (biology) , suspension (topology) , materials science , statistical physics , physics , classical mechanics , mathematics , quantum mechanics , evolutionary biology , biology , homotopy , pure mathematics

A theoretical model of liquid and particle random fluctuations is proposed for gravity-driven flows of inertial homogeneous suspensions. It is based on a paradigm assuming that fluctuations of both liquid velocity and particle slip velocity are driven by fluctuations of the phase indicator function. It is shown that this model accurately predicts the energy of the fluctuations of both the fluid and particle phases measured in a homogeneous solid-liquid fluidized bed over a wide range of particle volume fractions, from 10% to 45%

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