A Lagrangian VOF tensorial penalty method for the DNS of resolved particle-laden flows

Vincent, Stéphane; Motta, Jorge César Brändle de; Sarthou, Arthur; Estivalèzes, Jean-Luc; Simonin, Olivier; Climent, Éric

doi:10.1016/j.jcp.2013.08.023

Cited by 61 publications

(78 citation statements)

References 95 publications

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“…The choice of the grid resolution was the best compromise (as was observed in Vincent et al, 2014 , JCP) between accuracy of solution and calculation time. Concerning the sensitivity of results to the grid resolution using the ITPM, it was observed in Vincent et al (2014) that correct results were obtained when comparing particle flows with reference solutions for particle settling in a tank ( Fig. 13 of that paper) or particle rotating in a Stokes flow (Fig.…”

Section: Numerical Modelmentioning

confidence: 93%

“…Details of numerical approach and validation test cases are given in Vincent et al (2014) . The DNS approach is based on a one-fluid formalism of the incompressible Navier-Stokes equations with an algebraic adaptive augmented Lagrangian method used for pressure-velocity coupling (Implicit Tensorial Penalty Method, ITPM).…”

Section: Numerical Modelmentioning

confidence: 99%

“…A Lagrangian Volume of Fluid (VoF-Lag) method enables particle tracking while avoiding particle shape deformation and ensuring volume conservation of the solid phase. The convergence of the method was demonstrated for 2D and 3D reference test problems in Vincent et al (2014) , with a second order convergence in space.…”

Section: Numerical Modelmentioning

confidence: 99%

“…Instantaneous and averaged flow characteristics of the fluidized bed were qualitatively in good agreement with experimental trends. Since then, this method was improved and has been applied in the present study with a higher level of accuracy ( Vincent et al, 2014 ). The numerical technique is a four-way coupling method, based on a one-fluid formulation of the incompressible Navier-Stokes equations solved on a structured Cartesian grid.…”

Section: Introductionmentioning

confidence: 99%

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Particle resolved direct numerical simulation of a liquid–solid fluidized bed: Comparison with experimental data

Özel

Motta

Abbas

et al. 2017

International Journal of Multiphase Flow

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OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible. This is an author-deposited version published in : http://oatao. (10), respectively. In this paper, we compare the statistical quantities computed from numerical results with the experimental data obtained with 3-D trajectography and High Frequency PIV. Fluidization law predicted by the numerical simulations is in very good agreement with the experimental curve and the main features of trajectories and Lagrangian velocity signal of the particles are well reproduced by the simulations. The evolution of particle and flow velocity variances as a function of bed solid volume fraction is also well captured by the simulations. In particular, the numerical simulations predict the right level of anisotropy of the dispersed phase fluctuations and its independence of bed solid volume fraction. They also confirm the high value of the ratio between the fluid and the particle phase fluctuating kinetic energy. A quick analysis suggests that the fluid velocity fluctuations are mainly driven by fluid-particle wake interactions (pseudo-turbulence) whereas the particle velocity fluctuations derive essentially from the large scale flow motion (recirculation). Lagrangian autocorrelation function of particle fluctuating velocity exhibits large-scale oscillations, which are not observed in the corresponding experimental curves, a difference probably due to a statistical averaging effect. Evolution as a function of the bed solid volume fraction and the collision frequency based upon transverse component of particle kinetic energy correctly matches the experimental trend and is well fitted by a theoretical expression derived from Kinetic Theory of Granular Flows.

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Section: Numerical Modelmentioning

confidence: 93%

Section: Numerical Modelmentioning

confidence: 99%

Section: Numerical Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Particle resolved direct numerical simulation of a liquid–solid fluidized bed: Comparison with experimental data

Özel

Motta

Abbas

et al. 2017

International Journal of Multiphase Flow

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“…A detailed presentation of the finite size particle simulations and precise validations are presented elsewhere. 23 It is worthwhile to mention that the present model can be easily implemented in any code (based on IBM, Immersed Interface Method, etc.) accounting for finite size particles.…”

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confidence: 99%

Numerical modelling of finite-size particle collisions in a viscous fluid

et al. 2013

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A general model is presented for short-range hydrodynamic interactions and headon particle-particle/wall collisions. The model has been embedded in two distinct numerical methods for fully resolved simulation of finite-size particles in a viscous fluid. It accounts for the material properties of the particles and lubrication effects prior to collision that cannot be fully resolved on a fixed grid. We demonstrate that the model is able to reproduce experimental data for the coefficient of restitution of particle-wall collisions over a wide range of Stokes number based on the particle impact velocity. The set of model parameters we selected and more generally the modelling approach we propose can be efficiently used for fully resolved simulations of moderately dense solid-liquid suspensions. C 2013 AIP Publishing LLC.

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An Original Approach to Extract Momentum and Heat Transfers from Particle‐Resolved Simulations of Particulate Flows

Chadil¹,

Vincent²,

Èzes³

2022

Fluid Mechanics at Interfaces 1

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A Lagrangian VOF tensorial penalty method for the DNS of resolved particle-laden flows

Abstract: OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible.

Cited by 61 publications

References 95 publications

Particle resolved direct numerical simulation of a liquid–solid fluidized bed: Comparison with experimental data

Particle resolved direct numerical simulation of a liquid–solid fluidized bed: Comparison with experimental data

Numerical modelling of finite-size particle collisions in a viscous fluid

An Original Approach to Extract Momentum and Heat Transfers from Particle‐Resolved Simulations of Particulate Flows

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