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

Journal Article · · Physical Review Fluids
 [1];  [2]
  1. Univ. of Florida, Gainesville, FL (United States); OSTI
  2. Univ. of Florida, Gainesville, FL (United States)
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. Finally, 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 0.3 ≤ Re ≤ 173 and 0.11 ≤ Φ ≤ 0.45 accordingly.
Research Organization:
Univ. of Florida, Gainesville, FL (United States)
Sponsoring Organization:
National Science Foundation (NSF); US Department of the Navy, Office of Naval Research (ONR); USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
NA0002378
OSTI ID:
1801101
Journal Information:
Physical Review Fluids, Journal Name: Physical Review Fluids Journal Issue: 11 Vol. 4; ISSN 2469-990X
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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