A phase‐field based model for coupling two‐phase flow with the motion of immersed rigid bodies

Reder, Martin; Hoffrogge, Paul W.; Schneider, Daniel; Nestler, Britta

doi:10.1002/nme.6988

Cited by 5 publications

(2 citation statements)

References 30 publications

(77 reference statements)

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“…In DLM-based FD, the hydrodynamic forces acting on particles are not solved directly; as a result, DLM-based FD is also known as the implicit fictitious boundary method (FBM). DLM-based FD has also been coupled with phase-field methods to consider a two-phase fluid 152 . The explicit FBM 153 uses a multigrid finite element method with hydrodynamic forces obtained directly by volume integration.…”

Section: Mesh-based Resolved Approachmentioning

confidence: 99%

The role of particle shape in computational modelling of granular matter

Zhao,

Luding

2023

Nat Rev Phys

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Granular matter is ubiquitous in nature and is present in diverse forms in important engineering, industrial and natural processes. Particle-based computational modelling has become indispensable to understand and predict the complex behaviour of granular matter in these processes. The success of modern computational models requires realistic and efficient consideration of particle shape. Realistic particle shapes in naturally occurring and engineered materials offer diverse challenges owing to their multiscale nature in both length and time. Furthermore, the complex interactions with other materials, such as interstitial fluids, are highly nonlinear and commonly involve multiphysics coupling. This Technical Review presents a comprehensive appraisal of state-of-the-art computational models for granular particles of either naturally occurring shapes or engineered geometries. It focuses on particle shape characterization, representation and implementation, as well as its important effects. In addition, the particles may be hard, highly deformable, crushable or phase transformable; they might change their behaviour in the presence of interstitial fluids and are sensitive to density, confining stress and flow state. We describe generic methodologies that capture the universal features of granular matter and some unique approaches developed for special but important applications. Sections• Consideration of shape effects in coupled simulations of granular particles and environmental fluids requires revamped theories and methods to faithfully reflect their underpinning multiphase, multiphysics nature.• Incorporating realistic particle shapes in granular matter modelling must harness the latest advances in parallel computing and machine learning for effective large-scale computations.Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

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Section: Mesh-based Resolved Approachmentioning

confidence: 99%

The role of particle shape in computational modelling of granular matter

Zhao,

Luding

2023

Nat Rev Phys

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“…The kinematic viscosity of the fluid is given by ν and the mass density of the fluid by ρ. Note: In general (e.g., multi-phase flow problems (Reder et al, 2022)), the phase-specific material parameters are interpolated in the diffuse interface regions. In this study we focus on single phase flow and therefore the corresponding parameters in Table 1 are ∇ ⋅ (𝜙𝜙𝑙𝑙𝒖𝒖𝑙𝑙) = 0 .…”

Section: Diffusive and Advective Mass Transportmentioning

confidence: 99%

Phase‐Field Simulations of Epitaxial Crystal Growth in Open Fractures With Reactive Lateral Flow

Späth

Selzer

Busch

et al. 2023

Water Resources Research

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Fluid flow in fracture porosity in the Earth's crust is in general accompanied by crystallization or dissolution depending on the state of saturation. The evolution of the microstructure in turn affects the transport and mechanical properties of the rock, but the understanding of this coupled system is incomplete. Here, we aim to simulate spatio‐temporal observations of laboratory experiments at the grain scale (using potash alumn), where crystals grow in a fracture during reactive flow, and show a varying growth rate along the fracture due to saturation differences. We use a multiphase‐field modeling approach, where reactive fluid flow and crystal growth is computed and couple the chemical driving force for grain growth to the local saturation state of the fluid. The supersaturation of the fluid is characterized by a concentration field which is advected by fluid flow and in turn affects the crystal growth with anisotropic growth kinetics. The simulations exhibit good agreement with the experimental results, providing the basis for upscaling our results to larger scale computations of combined multi‐physical processes in fractured porous media for applications as groundwater protection, geothermal, and hydrocarbon reservoir prediction, water recovery, or storing H2 or CO2 in the subsurface.

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Permeability evolution in open fractures during precipitation and dissolution - A phase-field study

Späth,

Nestler

2023

Advances in Water Resources

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A phase‐field based model for coupling two‐phase flow with the motion of immersed rigid bodies

Cited by 5 publications

References 30 publications

The role of particle shape in computational modelling of granular matter

The role of particle shape in computational modelling of granular matter

Phase‐Field Simulations of Epitaxial Crystal Growth in Open Fractures With Reactive Lateral Flow

Permeability evolution in open fractures during precipitation and dissolution - A phase-field study

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