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Pore-scale direct numerical simulation of particle transport in porous media SCIE
期刊论文 | 2019 , 199 , 613-627 | CHEMICAL ENGINEERING SCIENCE
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Abstract :

A computational platform for direct numerical simulation of fluid-particle two-phase flow in porous media is presented in this study. In the proposed platform, the Navier-Stokes equations are used to describe the motion of the continuous phase, while the discrete element method (DEM) is employed to evaluate particle-particle and particle-wall interactions, with a fictitious domain method being adopted to evaluate particle-fluid interactions. Particle-wall contact states are detected by the ERIGID scheme. Moreover, a new scheme, namely, base point-increment method is developed to improve the accuracy of particle tracking in porous media. In order to improve computationally efficiency, a time splitting strategy is applied to couple the fluid and DEM solvers, allowing different time steps to be used which are adaptively determined according to the stability conditions of each solver. The proposed platform is applied to particle transport in a porous medium with its pore structure being reconstructed from micro-CT scans from a real rock. By incorporating the effect of pore structure which has a comparable size to the particles, numerical results reveal a number of distinct microscopic flow mechanisms and the corresponding macroscopic characteristics. The time evolution of the inlet to outlet pressure-difference consists of large-scale spikes and small-scale fluctuations. Apart from the influence through direct contacts between particles, the motion of a particle can also be affected by particles without contact through blocking a nearby passage for fluid flow. Particle size has a profound influence on the macroscopic motion behavior of particles. Small particles are easier to move along the main stream and less dispersive in the direction perpendicular to the flow than large particles. (C) 2019 Elsevier Ltd. All rights reserved.

Keyword :

Fictitious domain method Discrete element method Pore scale Fluid-particle flow

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GB/T 7714 Su, Junwei , Chai, Guoliang , Wang, Le et al. Pore-scale direct numerical simulation of particle transport in porous media [J]. | CHEMICAL ENGINEERING SCIENCE , 2019 , 199 : 613-627 .
MLA Su, Junwei et al. "Pore-scale direct numerical simulation of particle transport in porous media" . | CHEMICAL ENGINEERING SCIENCE 199 (2019) : 613-627 .
APA Su, Junwei , Chai, Guoliang , Wang, Le , Cao, Weidong , Gu, Zhaolin , Chen, Chungang et al. Pore-scale direct numerical simulation of particle transport in porous media . | CHEMICAL ENGINEERING SCIENCE , 2019 , 199 , 613-627 .
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A non-oscillatory multimoment finite-volume global transport model on a cubed-sphere grid using the WENO slope limiter EI SCIE Scopus
期刊论文 | 2018 , 144 (714) , 1611-1627 | QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY
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Abstract :

By using CSL3 multimoment interpolation, a piecewise cubic polynomial for spatial reconstruction can be obtained with four multimoment constraint conditions consisting of two point values at cell boundaries, one volume-integrated average and one slope parameter at the cell center. The resulting multimoment finite-volume scheme is of fourth-order accuracy. A non-oscillatory scheme can be derived by designing the proper formula to calculate the slope parameter at the cell center. A new strategy was recently proposed, using the Weighted Essentially Non-Oscillatory (WENO) concept to determine the slope parameter. Using a WENO-type limiter, the multimoment reconstruction can effectively remove nonphysical oscillations while keeping fourth-order accuracy in smooth regions. In this study, a WENO-type slope limiter is proposed and implemented in our multimoment finite-volume global transport model based on the cubed-sphere grid. The widely used benchmark tests, including both solid rotation and complicated deformational advection cases, are checked to verify the performance of the proposed global transport model. Numerical results reveal that a WENO-type slope limiter can greatly improve the accuracy of the multimoment finite-volume model compared with the former Total Variation Diminishing (TVD)-type limiter. Furthermore, the proposed limiter is constructed over a compact stencil of only three adjacent cells. Without any user-defined or problem-dependent parameters, the present model is very promising for practical applications.

Keyword :

WENO global model slope limiter cubed-sphere grid transport model multimoment scheme

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GB/T 7714 Tang, Jie , Chen, Chungang , Li, Xingliang et al. A non-oscillatory multimoment finite-volume global transport model on a cubed-sphere grid using the WENO slope limiter [J]. | QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY , 2018 , 144 (714) : 1611-1627 .
MLA Tang, Jie et al. "A non-oscillatory multimoment finite-volume global transport model on a cubed-sphere grid using the WENO slope limiter" . | QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY 144 . 714 (2018) : 1611-1627 .
APA Tang, Jie , Chen, Chungang , Li, Xingliang , Shen, Xueshun , Xiao, Feng . A non-oscillatory multimoment finite-volume global transport model on a cubed-sphere grid using the WENO slope limiter . | QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY , 2018 , 144 (714) , 1611-1627 .
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Local Fixed Pivot Quadrature Method of Moments for Solution of Population Balance Equation SCIE
期刊论文 | 2018 , 6 (11) | PROCESSES
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A local fixed pivot quadrature method of moments (LFPQMOM) is proposed for the solution of the population balance equation (PBE) for the aggregation and breakage process. First, the sectional representation for aggregation and breakage is presented. The continuous summation of the Dirac Delta function is adopted as the discrete form of the continuous particle size distribution in the local section as performed in short time Fourier transformation (STFT) and the moments in local sections are tracked successfully. Numerical simulation of benchmark test cases including aggregation, breakage, and aggregation breakage combined processes demonstrate that the new method could make good predictions for the moments along with particle size distribution without further assumption. The accuracy in the numerical results of the moments is comparable to or higher than the quadrature method of moment (QMOM) in most of the test cases. In theory, any number of moments can be tracked with the new method, but the computational expense can be relatively large due to many scalar equations that may be included.

Keyword :

breakage local fixed pivot quadrature method of moment aggregation population balance equation

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GB/T 7714 Su, Junwei , Le, Wang , Gu, Zhaolin et al. Local Fixed Pivot Quadrature Method of Moments for Solution of Population Balance Equation [J]. | PROCESSES , 2018 , 6 (11) .
MLA Su, Junwei et al. "Local Fixed Pivot Quadrature Method of Moments for Solution of Population Balance Equation" . | PROCESSES 6 . 11 (2018) .
APA Su, Junwei , Le, Wang , Gu, Zhaolin , Chen, Chungang . Local Fixed Pivot Quadrature Method of Moments for Solution of Population Balance Equation . | PROCESSES , 2018 , 6 (11) .
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Coupling Eulerian-Lagrangian method of air-particle two-phase flow with population balance equations to simulate the evolution of vehicle exhaust plume EI SCIE Scopus
期刊论文 | 2018 , 88 (3) , 117-140 | INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS
WoS CC Cited Count: 1 SCOPUS Cited Count: 1
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In this paper, we present a new numerical scheme to describe the dynamic evolution of multiphase polydisperse systems in terms of time, space, and properties by coupling the Eulerian-Lagrangian method for air-particle two-phase flow and population balance equations to describe particle property evolution due to microbehaviors (eg, aggregation, breakage, and growth). This coupling scheme was used to comprehensively simulate the two-phase flow structure, particle size spectrum, particle number, and volume concentrations. These were characterized by a high-resolution particle tracking using the Lagrangian approach and the high precision of moments of the particle size spectrum by solving the population balance equation with the quadrature method of moments. The algorithm of the coupling scheme was incorporated into the open source computational fluid dynamics software OpenFOAM to simulate the dynamic evolution of vehicle exhaust plume. The impacts of vehicle velocity, exhaust temperature, and aggregation efficiency on the distribution of auto exhaust particles in space and changes in their properties were analyzed. The results indicate that the particle number concentration, volume concentration, and average diameter of particles in the vehicle exhaust plume could be strongly affected by the plume structure and flow properties.

Keyword :

vehicle exhaust plume population balance equations Eulerian-Lagrangian method quadrature method of moments particle size spectrum multiphase polydisperse systems

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GB/T 7714 He, Yuanping , Gu, Zhaolin , Su, Junwei et al. Coupling Eulerian-Lagrangian method of air-particle two-phase flow with population balance equations to simulate the evolution of vehicle exhaust plume [J]. | INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS , 2018 , 88 (3) : 117-140 .
MLA He, Yuanping et al. "Coupling Eulerian-Lagrangian method of air-particle two-phase flow with population balance equations to simulate the evolution of vehicle exhaust plume" . | INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS 88 . 3 (2018) : 117-140 .
APA He, Yuanping , Gu, Zhaolin , Su, Junwei , Chen, Chungang , Zhang, Mingxu , Zhang, Liyuan et al. Coupling Eulerian-Lagrangian method of air-particle two-phase flow with population balance equations to simulate the evolution of vehicle exhaust plume . | INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS , 2018 , 88 (3) , 117-140 .
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Advances in Pore-Scale Simulation of Oil Reservoirs EI SCIE Scopus
期刊论文 | 2018 , 11 (5) | ENERGIES
WoS CC Cited Count: 1 SCOPUS Cited Count: 1
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Abstract :

At the high water cut stage, the residual oil in a reservoir becomes complex and dispersed. Moreover, it is challenging to achieve good predictions of the movement of oil and water in a reservoir according to the macroscopic models based on the statistic parameters of this scenario. However, pore-scale simulation technology based on directly tracking the interaction among different phases can make an accurate prediction of the fluid distribution in the pore space, which is highly important in the improvement of the recovery rate. In this work, pore-scale simulation methods, including the pore network model, lattice Boltzmann method, Navier-Stokes equation-based interface tracking methods, and smoothed particle hydrodynamics, and relevant technologies are summarized. The principles, advantages, and disadvantages, as well as the degree of difficulty in the implementation are analyzed and compared. Problems in the current simulation technologies, micro sub-models, and applications in physicochemical percolation are also discussed. Finally, potential developments and prospects in this field are summarized.

Keyword :

lattice Boltzmann method smoothed particle hydrodynamics pore-scale simulation volume of fluid pore network model

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GB/T 7714 Su, Junwei , Wang, Le , Gu, Zhaolin et al. Advances in Pore-Scale Simulation of Oil Reservoirs [J]. | ENERGIES , 2018 , 11 (5) .
MLA Su, Junwei et al. "Advances in Pore-Scale Simulation of Oil Reservoirs" . | ENERGIES 11 . 5 (2018) .
APA Su, Junwei , Wang, Le , Gu, Zhaolin , Zhang, Yunwei , Chen, Chungang . Advances in Pore-Scale Simulation of Oil Reservoirs . | ENERGIES , 2018 , 11 (5) .
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A Non-oscillatory Multi-Moment Finite Volume Scheme with Boundary Gradient Switching EI SCIE Scopus
期刊论文 | 2017 , 72 (3) , 1146-1168 | JOURNAL OF SCIENTIFIC COMPUTING | IF: 1.814
SCOPUS Cited Count: 1
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In this work we propose a new formulation for high-order multi-moment constrained finite volume (MCV) method. In the one-dimensional building-block scheme, three local degrees of freedom (DOFs) are equidistantly defined within a grid cell. Two candidate polynomials for spatial reconstruction of third-order are built by adopting one additional constraint condition from the adjacent cells, i.e. the DOF at middle point of left or right neighbour. A boundary gradient switching (BGS) algorithm based on the variation-minimization principle is devised to determine the spatial reconstruction from the two candidates, so as to remove the spurious oscillations around the discontinuities. The resulted non-oscillatory MCV3-BGS scheme is of fourth-order accuracy and completely free of case-dependent ad hoc parameters. The widely used benchmark tests of one- and two-dimensional scalar and Euler hyperbolic conservation laws are solved to verify the performance of the proposed scheme in this paper. The MCV3-BGS scheme is very promising for the practical applications due to its accuracy, non-oscillatory feature and algorithmic simplicity.

Keyword :

High-order scheme Local reconstruction Finite volume method Variation-minimization principle Multi-moment method Non-oscillatory scheme

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GB/T 7714 Deng, Xi , Sun, Ziyao , Xie, Bin et al. A Non-oscillatory Multi-Moment Finite Volume Scheme with Boundary Gradient Switching [J]. | JOURNAL OF SCIENTIFIC COMPUTING , 2017 , 72 (3) : 1146-1168 .
MLA Deng, Xi et al. "A Non-oscillatory Multi-Moment Finite Volume Scheme with Boundary Gradient Switching" . | JOURNAL OF SCIENTIFIC COMPUTING 72 . 3 (2017) : 1146-1168 .
APA Deng, Xi , Sun, Ziyao , Xie, Bin , Yokoi, Kensuke , Chen, Chungang , Xiao, Feng . A Non-oscillatory Multi-Moment Finite Volume Scheme with Boundary Gradient Switching . | JOURNAL OF SCIENTIFIC COMPUTING , 2017 , 72 (3) , 1146-1168 .
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Development of a hybrid parallel MCV-based high-order global shallow-water model EI SCIE Scopus
期刊论文 | 2017 , 73 (6) , 2823-2842 | JOURNAL OF SUPERCOMPUTING | IF: 1.532
WoS CC Cited Count: 1 SCOPUS Cited Count: 1
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Abstract :

Utilization of high-order spatial discretizations is an important trend in developing global atmospheric models. As a competitive choice, the multi-moment constrained volume (MCV) method can achieve high accuracy while maintaining similar parallel scalability to classical finite volume methods. In this work, we introduce the development of a hybrid parallel MCV-based global shallow-water model on the cubed-sphere grid. Based on a sequential code, we perform parallelization on both the process and the thread levels. To enable process-level parallelism, we first decompose the six patches of the cubed-sphere in a same 2-D partition and then employ a conflict-free pipe-flow communication scheme for overlapping the halo exchange with computations. To further exploit the heterogeneous computing capacity of an Intel Xeon Phi accelerated supercomputer, we propose a guided panel-based inner-outer partition to distribute workload among the CPUs and the coprocessors. In addition to the above, thread-level parallelism along with various optimizations is done on both themulti-core CPU and themany-core accelerator. Numerical experiments are carried out to validate the correctness of the optimized parallel code and examine its parallel performance. Test results show that both the CPU-only and the hybrid codes scale well to hundreds of processes in terms of both the strong and weak scaling. In particular, the hybrid code can achieve a speedup of 2.56 x as compared to the CPU-only version. In the largest run on a 9216 x 9216 x 6 mesh (1.5 billion unknowns), the hybrid code sustains an aggregative performance of 26.5Tflops with 486 processes (33,534 cores).

Keyword :

Parallel scalability Cubed-sphere Multi-moment constrained volume method Global shallow-water model Intel Xeon Phi

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GB/T 7714 Zhang, Peng , Yang, Chao , Chen, Chungang et al. Development of a hybrid parallel MCV-based high-order global shallow-water model [J]. | JOURNAL OF SUPERCOMPUTING , 2017 , 73 (6) : 2823-2842 .
MLA Zhang, Peng et al. "Development of a hybrid parallel MCV-based high-order global shallow-water model" . | JOURNAL OF SUPERCOMPUTING 73 . 6 (2017) : 2823-2842 .
APA Zhang, Peng , Yang, Chao , Chen, Chungang , Li, Xingliang , Shen, Xueshun , Xiao, Feng . Development of a hybrid parallel MCV-based high-order global shallow-water model . | JOURNAL OF SUPERCOMPUTING , 2017 , 73 (6) , 2823-2842 .
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An MCV Nonhydrostatic Atmospheric Model with Height-Based Terrain following Coordinate: Tests of Waves over Steep Mountains SCIE Scopus
期刊论文 | 2016 | ADVANCES IN METEOROLOGY | IF: 1.277
WoS CC Cited Count: 1 SCOPUS Cited Count: 1
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A nonhydrostatic atmospheric model was tested with the mountain waves over various bell-shaped mountains. The model is recently proposed by using the MCV (multimoment constrained finite volume) schemes with the height-based terrain following coordinate representing the topography. As discussed in our previous work, the model has some appealing features for atmospheric modeling and can be expected as a practical framework of the dynamic cores, which well balances the numerical accuracy and algorithmic complexity. The flows over the mountains of various half widths and heights were simulated with the model. The semianalytic solutions to the mountain waves through the linear theory are used to check the performance of the MCV model. It is revealed that the present model can accurately reproduce various mountain waves including those generated by the mountains with very steep inclination and is very promising for numerically simulating atmospheric flows over complex terrains.

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GB/T 7714 Li, Xingliang , Shen, Xueshun , Xiao, Feng et al. An MCV Nonhydrostatic Atmospheric Model with Height-Based Terrain following Coordinate: Tests of Waves over Steep Mountains [J]. | ADVANCES IN METEOROLOGY , 2016 .
MLA Li, Xingliang et al. "An MCV Nonhydrostatic Atmospheric Model with Height-Based Terrain following Coordinate: Tests of Waves over Steep Mountains" . | ADVANCES IN METEOROLOGY (2016) .
APA Li, Xingliang , Shen, Xueshun , Xiao, Feng , Chen, Chungang . An MCV Nonhydrostatic Atmospheric Model with Height-Based Terrain following Coordinate: Tests of Waves over Steep Mountains . | ADVANCES IN METEOROLOGY , 2016 .
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An Efficient RIGID Algorithm and Its Application to the Simulation of Particle Transport in Porous Medium EI SCIE Scopus
期刊论文 | 2016 , 114 (1) , 99-131 | TRANSPORT IN POROUS MEDIA | IF: 2.205
WoS CC Cited Count: 1 SCOPUS Cited Count: 4
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RIGID algorithm was recently proposed to identify the contact state between spherical particles and arbitrary-shaped walls, demonstrating significantly improved robustness, accuracy and efficiency compared to existing methods. It is an important module when coupling computational fluid dynamics with discrete element model to simulate particle transport in porous media. The procedure to identify particle and surface contact state is usually time-consuming and takes a large part of the CPU time for discrete element simulations of dense particle flow in complex geometries, especially in cases with a large number of particle-wall collisions (e.g. particle transport in porous media). This paper presents a new version of RIGID algorithm, namely ERIGID, which further improves the efficiency of the original algorithm through a number of new strategies including the recursive algorithm for particle-face pair selection, angle-testing algorithm for determining particle-face relations and the smallest index filter for fast rejection and storage of time invariant. Several specially designed numerical experiments have been carried out to test the performance of ERIGID and verify the effectiveness of these strategies. Finally, the improved algorithm is used to simulate particle transport in a rock treated as a porous medium. Our numerical results reveal several important flow phenomena and the primary reason for particle trapping inside the rock.

Keyword :

Porous media Discrete element method Complex geometry Particle flows

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GB/T 7714 Su, Junwei , Huang, Chuanqing , Gu, Zhaolin et al. An Efficient RIGID Algorithm and Its Application to the Simulation of Particle Transport in Porous Medium [J]. | TRANSPORT IN POROUS MEDIA , 2016 , 114 (1) : 99-131 .
MLA Su, Junwei et al. "An Efficient RIGID Algorithm and Its Application to the Simulation of Particle Transport in Porous Medium" . | TRANSPORT IN POROUS MEDIA 114 . 1 (2016) : 99-131 .
APA Su, Junwei , Huang, Chuanqing , Gu, Zhaolin , Chen, Chungang , Xu, Xiaoyun . An Efficient RIGID Algorithm and Its Application to the Simulation of Particle Transport in Porous Medium . | TRANSPORT IN POROUS MEDIA , 2016 , 114 (1) , 99-131 .
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A two-layer mesh method for discrete element simulation of gas-particle systems with arbitrarily polyhedral mesh EI SCIE Scopus
期刊论文 | 2015 , 103 (10) , 759-780 | INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING | IF: 2.1
WoS CC Cited Count: 18 SCOPUS Cited Count: 21
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Inter-phase momentum coupling for particle flows is usually achieved by means of direct numerical simulation (DNS) or point source method (PSM). DNS requires the mesh size of the continuous phase to be much smaller than the size of the smallest particle in the system, whereas PSM requires the mesh size of the continuous phase to be much larger than the particle size. However, for applications where mesh sizes are similar to the size of particles in the system, neither DNS nor PSM is suitable. In order to overcome the dependence of mesh on particle sizes associated with DNS or PSM, a two-layer mesh method (TMM) is proposed. TMM involves the use of a coarse mesh to track the movement of particle clouds and a fine mesh for the continuous phase, with mesh interpolation for information exchange between the coarse and fine mesh Numerical tests of different interpolation methods show that a conservative interpolation scheme of the second order yields the most accurate results. Numerical simulations of a fluidized bed show that there is a good agreement between predictions using TMM with a second-order interpolation scheme and the experimental results, as well as predictions obtained with PSM. Copyright (c) 2015John Wiley & Sons, Ltd.

Keyword :

multiphase particle flows two-layer mesh method dynamic simulation discrete element method fluidization

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GB/T 7714 Su, Junwei , Gu, Zhaolin , Chen, Chungang et al. A two-layer mesh method for discrete element simulation of gas-particle systems with arbitrarily polyhedral mesh [J]. | INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING , 2015 , 103 (10) : 759-780 .
MLA Su, Junwei et al. "A two-layer mesh method for discrete element simulation of gas-particle systems with arbitrarily polyhedral mesh" . | INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING 103 . 10 (2015) : 759-780 .
APA Su, Junwei , Gu, Zhaolin , Chen, Chungang , Xu, Xiao Yun . A two-layer mesh method for discrete element simulation of gas-particle systems with arbitrarily polyhedral mesh . | INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING , 2015 , 103 (10) , 759-780 .
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