Lagrangian investigation of pseudo-turbulence in multiphase flow using superposable wakes

W. C. Moore and S. Balachandar
Phys. Rev. Fluids 4, 114301 – Published 6 November 2019

Abstract

This study proposes a method for approximating the fully resolved flow through a monodisperse array of spherical particles using only the locations of the particles and the volume-averaged Reynolds number, both of which are available in Euler-Lagrange (EL) simulations. To achieve this, we first determine a superposable wake (SW) which best captures the behavior of direct numerical simulations (DNS). By adding the SW for all the particles, the pseudo-turbulence caused by the perturbed flow around a distribution of particles in an EL simulation can be approximated. A Reynolds stress model is then developed for use in an Euler-Lagrange framework. The range of Reynolds numbers and particle volume fractions considered in this study are 0.3Re173 and 0.11ϕ0.45 accordingly.

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  • Received 11 February 2019

DOI:https://doi.org/10.1103/PhysRevFluids.4.114301

©2019 American Physical Society

Physics Subject Headings (PhySH)

Fluid Dynamics

Authors & Affiliations

W. C. Moore and S. Balachandar

  • Center for Compressible Multiphase Turbulence, University of Florida, Gainesville, Florida 32611, USA

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Vol. 4, Iss. 11 — November 2019

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