A Fictitious Domain, parallel numerical method for rigid particulate flows

Blasco, Jordi; Calzada, M. Carmen; Marı́n, Mercedes

doi:10.1016/j.jcp.2009.07.010

Cited by 18 publications

(14 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(26). This result can seem surprising since some published studies present satisfactory results without any momentum forcing [23,27,75]. The difference is actually linked to the flow regime studied.…”

Section: Velocity Fieldmentioning

confidence: 96%

A fictitious domain approach for the simulation of dense suspensions

Gallier

Lemaire

Lobry

et al. 2014

Journal of Computational Physics

View full text Add to dashboard Cite

Low Reynolds number concentrated suspensions do exhibit an intricate physics which can be partly unraveled by the use of numerical simulation. To this end, a Lagrange multiplier-free fictitious domain approach is described in this work. Unlike some methods recently proposed, the present approach is fully Eulerian and therefore does not need any transfer between the Eulerian background grid and some Lagrangian nodes attached to particles. Lubrication forces between particles play an important role in the suspension rheology and have been properly accounted for in the model. A robust and effective lubrication scheme is outlined which consists in transposing the classical approach used in Stokesian Dynamics to our present direct numerical simulation. This lubrication model has also been adapted to account for solid boundaries such as walls. Contact forces between particles are modeled using a classical Discrete Element Method (DEM), a widely used method in granular matter physics. Comprehensive validations are presented on various one-particle, two-particle or three-particle configurations in a linear shear flow as well as some O(10 3 ) and O(10 4 ) particle simulations.

show abstract

Section: Velocity Fieldmentioning

confidence: 96%

A fictitious domain approach for the simulation of dense suspensions

Gallier

Lemaire

Lobry

et al. 2014

Journal of Computational Physics

View full text Add to dashboard Cite

show abstract

“…Referring to the work [17], the speedup S N is selected as a parameter to measure the parallel performance, which is defined by…”

Section: Parallel Efficiencymentioning

confidence: 99%

Fundamental validation of the finite volume particle method for 3D sloshing dynamics

Guo

Zhang

Morita

et al. 2010

Numerical Methods in Fluids

View full text Add to dashboard Cite

The use of the finite volume particle (FVP) method is validated for three-dimensional sloshing dynamics with a free surface by comparing with results from experiments. In the first part, two typical sloshing experiments for a single liquid phase are simulated, and slosh characteristics that include the free surface behavior and hydrodynamic pressure are reported. Moreover, the influences of the circular wall geometry and spatial resolution in the simulation are studied in a sensitivity analysis. In the second part, two sloshing problems with solid bodies are simulated to preliminarily verify the applicability of the FVP method to three-dimensional solid bodies' motion in liquid flow. Good agreement between simulations and corresponding experiments indicates that the present FVP method well reproduces three-dimensional sloshing behavior.

show abstract

“…We choose this example since it is widely used as a benchmark example for testing numerical models, e.g. fictitious domain methods (Glowinski et al 2001, Blasco et al 2009) and immersed finite element method (Lee et al 2009) with which we compare our numerical simulations. Figure 61 shows the vertical velocity and pressure profiles of the particulate flow with a single disk falling.…”

Section: Llnl-tr-645956mentioning

confidence: 99%

Evolution of an interfacial crack on the concrete-embankment boundary

Glascoe

Antoun

Kanarska

et al. 2013

View full text Add to dashboard Cite

Abstract:Failure of a dam can have subtle beginnings. A small crack or dislocation at the interface of the concrete dam and the surrounding embankment soil initiated by, for example, a seismic or an explosive event can lead to a catastrophic failure of the dam. The dam may 'self-rehabilitate' if a properly designed granular filter is engineered around the embankment. Currently, the design criteria for such filters have only been based on experimental studies. We demonstrate the numerical prediction of filter effectiveness at the soil grain scale. This joint LLNL-ERDC basic research project, funded by the Department of Homeland Security's Science and Technology Directorate (DHS S&T), consists of validating advanced high performance computer simulations of soil erosion and transport of grain-and dam-scale models to detailed centrifuge and soil erosion tests. Validated computer predictions highlight that a resilient filter is consistent with the current design specifications for dam filters. These predictive simulations, unlike the design specifications, can be used to assess filter success or failure under different soil or loading conditions and can lead to meaningful estimates of the timing and nature of full-scale dam failure.

show abstract

A Fictitious Domain, parallel numerical method for rigid particulate flows

Cited by 18 publications

References 33 publications

A fictitious domain approach for the simulation of dense suspensions

A fictitious domain approach for the simulation of dense suspensions

Fundamental validation of the finite volume particle method for 3D sloshing dynamics

Evolution of an interfacial crack on the concrete-embankment boundary

Contact Info

Product

Resources

About