Investigating the physical characteristics of dense granular flows by coupling the weakly compressible moving particle semi-implicit method with the rheological model

Ke, Luoyilang; Jin, Yee‐Chung; Xu, Tibing; Tai, Yih-Chin

doi:10.1007/s11440-019-00905-8

Cited by 15 publications

(3 citation statements)

References 40 publications

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“…Lagrée et al 4 perform a discrete element and a continuous simulation using the

μ

( I )‐rheology of a column collapse. Further studies investigated the two‐ and three‐dimensional (2D and 3D) column collapse also taking in consideration the sensitivity of the empirical and regularization parameters 5‐10 …”

Section: Introductionmentioning

confidence: 99%

“…Further studies investigated the two-and three-dimensional (2D and 3D) column collapse also taking in consideration the sensitivity of the empirical and regularization parameters. [5][6][7][8][9][10] A column collapse or dam break simulation needs to deal with the interface or free surface of the dense granular fluid. Here, a Lagrangian, Eulerian, or an arbitrary Lagrangian-Eulerian framework can be used.…”

mentioning

confidence: 99%

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Simulating dense granular flow using the μ(I)‐rheology within a space‐time framework

Gesenhues

Behr

2021

Numerical Methods in Fluids

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A space‐time framework is applied to simulate dense granular flow. Two different numerical experiments are performed: a column collapse and a dam break on an inclined plane. The experiments are modeled as two‐phase flows. The dense granular material is represented by a constitutive model, the μ(I)‐rheology, that is based on the Coulomb's friction law, such that the normal stress applied by the pressure is related to the tangential stress. The model represents a complex viscoplastic material behavior. The interface between the dense granular material and the surrounding light fluid is captured with a level set function. Due to discontinuities close to the the interface, the mesh requires a sufficient resolution. The space‐time approach allows unstructured meshes in time and, therefore a well‐refined mesh in the temporal direction around the interface. In this study, results and performance of a flat and a simplex space time discretization are verified and analyzed.

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“…Lagrée et al 4 perform a discrete element and a continuous simulation using the

μ

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

Simulating dense granular flow using the μ(I)‐rheology within a space‐time framework

Gesenhues

Behr

2021

Numerical Methods in Fluids

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show abstract

“…Further studies investigated the 2D and 3D column collapse also taking in consideration the sensitivity of the empirical and regularization parameters. 5,6,7,8,9,10,11 A column collapse or dam break simulation needs to deal with the interface or free surface of the dense granular fluid. Here, a Lagrangian, Eulerian, or an arbitrary Lagrangian-Eulerian framework can be used.…”

Section: Introductionmentioning

confidence: 99%

Simulating dense granular flow using the $μ$($I$)-rheology within a space-time framework

Gesenhues,

Behr

2021

Preprint

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A space-time framework is applied to simulate dense granular flow. Two different numerical experiments are performed: a column collapse and a dam break on an inclined plane. The experiments are modeled as two-phase flows. The dense granular material is represented by a constitutive model, the ( )-rheology, that is based on the Coulomb's friction law, such that the normal stress applied by the pressure is related to the tangential stress. The model represents a complex shear thinning viscoplastic material behavior. The interface between the dense granular material and the surrounding light fluid is captured with a level set function. Due to discontinuities close to the the interface, the mesh requires a sufficient resolution. The space-time approach allows unstructured meshes in time and, therefore a well refined mesh in the temporal direction around the interface. In this study, results and performance of a flat and a simplex space time discretization are verified and analyzed.

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An explicit incompressible scheme based on the MPS method to simulate slump flow

Xu,

Koshizuka,

Inaba

et al. 2024

Comp. Part. Mech.

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In this study, an explicit incompressible scheme based on the Moving Particle Semi-implicit method (MPS) is applied to simulate slump flow. In the numerical method, the pressure Poisson equation is explicitly solved to obtain the pressure field. In simulating slump flow caused by fresh concrete, the fluid is treated to be non-Newtonian fluid and a regularized Bingham model is employed to calculate the viscosity. Flow characteristics in the slump flow are reproduced by the numerical method, and in good agreement with experimental measurements. The parameters including the rheological regularized parameter, yield stress, plastic viscosity, and particle distance, are examined in the simulations. It is found that the explicit incompressible scheme can well reproduce the concrete spreading. The yield stress in the rheology model affects the spreading distance significantly while the plastic viscosity plays an important role in the acceleration stage of the material spreading.

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Investigating the physical characteristics of dense granular flows by coupling the weakly compressible moving particle semi-implicit method with the rheological model

Cited by 15 publications

References 40 publications

Simulating dense granular flow using the μ(I)‐rheology within a space‐time framework

Simulating dense granular flow using the μ(I)‐rheology within a space‐time framework

Simulating dense granular flow using the $μ$($I$)-rheology within a space-time framework

An explicit incompressible scheme based on the MPS method to simulate slump flow

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