Resolved CFD-DEM simulations of the hydraulic conveying of coarse grains through a very-narrow elbow

Filho, Elmar Anton Schnorr; Lima, Nicolao; Franklin, Erick de Moraes

doi:10.1016/j.powtec.2021.10.022

Cited by 23 publications

(2 citation statements)

References 34 publications

(50 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the fully resolved CFD-DEM, the solid-liquid interaction force is calculated through directly integrating the fluid stress over the particle surface. Consequently, the fluid grids must be finer than the particle diameter to accurately capture the particle boundary [8]. In the unresolved CFD-DEM approach, the solid-liquid interaction force is calculated through an empirical model with the void fraction [9].…”

Section: Introductionmentioning

confidence: 99%

Erosive Wear Caused by Large Solid Particles Carried by a Flowing Liquid: A Comprehensive Review

Kang,

Li,

Teng

et al. 2024

Processes

View full text Add to dashboard Cite

The erosive wear encountered in some industrial processes results in economic loss and even disastrous consequences. Hitherto, the mechanism of the erosive wear is not clear, especially when the erosive wear is caused by large particles (>3.0 mm) carried by a flowing liquid. Current approaches of predicting erosive wear need improvement, and the optimization of relevant equipment and systems lacks a sound guidance. It is of significance to further explore such a subject based on the relevant literature. The present review commences with a theoretical analysis of the dynamics of large particles and the fundamental mechanism of erosion. Then the characteristics of the erosion of various equipment are explicated. Effects of influential factors such as particle size and properties of the target material are analyzed. Subsequently, commonly used erosion models, measurement techniques, and numerical methods are described and discussed. Based on established knowledge and the studies reported, some expectations for future work are proposed.

show abstract

Section: Introductionmentioning

confidence: 99%

Erosive Wear Caused by Large Solid Particles Carried by a Flowing Liquid: A Comprehensive Review

Kang,

Li,

Teng

et al. 2024

Processes

View full text Add to dashboard Cite

show abstract

“…Since the resolved method discretizes the fluid phase to a particle scale and fully describes the flow surrounding each particle [33], it can be used to handle problems which require more fine meshing of the fluid. Schnorr Filho et al [34] investigated hydraulic transport of grains in a curved pipe and presented a validation of this resolved method. Gago et al [35] conducted resolved CFD-DEM simulations of fluid-solid interaction and successfully capture the dynamics in the solid system behavior.…”

Section: Introductionmentioning

confidence: 99%

Resolved CFD-DEM Simulation of Free Settling of Polyhedral Particles with Various Orientations: Insights Provided by Oscillation Behavior in Quiescent Liquid

Zhang,

Qiu,

Xiong

et al. 2023

JMSE

View full text Add to dashboard Cite

Particle settling is the process by which particulates move toward the bottom of a liquid, which can affect the sediment transport and energy balance of marine systems. However, the deficiency in understanding the resolved fluid–particle interactions with complex boundaries in the settling process awaits resolution. This study employs a hybrid approach that combines computational fluid dynamics (CFD) with the discrete element method (DEM) to fully simulate the free-settling behavior of polyhedral particles in water. The accuracy of the method is verified by comparing numerical results with experimental data of ellipsoidal particle settling. Two series of tests with horizontal and vertical particle release directions are established to investigate the effects of particle shape features, such as the aspect ratio (AR) and corner (C), on the particles’ mechanical behavior and hydrodynamic characteristics. The results demonstrate that particle shape exerts a substantial influence on fluid resistance, rotational motion, and fluid disturbance throughout the settling process. The maximum velocities in vertically released cases are roughly 1.2–1.3 times greater than those in horizontally released cases. The study highlights the potency of the resolved CFD-DEM method as a robust technique for comprehending fluid–particle phenomena within the marine geotechnical engineering, including sedimentation and erosion of seabed sediments.

show abstract

Numerical Simulations of Liquid-Solid Flows in A Vertical Pipe by MPS-DEM Coupling Method

2022

View full text Add to dashboard Cite

In the process of deep-sea mining, the liquid-solid flows in the vertical transportation pipeline are very complex. In the present work, an in-house solver MPSDEM-SJTU based on the improved MPS and DEM is developed for the simulation of hydraulic conveying. Firstly, three examples including the multilayer cylinder collapse, the Poiseuille flow and two-phase dam-break are used to validate the precision of the DEM model, the pipe flow model and MPS-DEM coupling model, respectively. Then, the hydraulic conveying with coarse particles in a vertical pipe is simulated. The solid particle distribution is presented and investigated in detail. Finally, the coupling method is successfully applied for the simulation of the liquid-solid flows in a vertical pipe with rotating blades, which shows the stability of the solver under rotating boundary conditions. This fully Lagrangian model is expected to be a new approach for analyzing hydraulic conveying.

show abstract

Resolved CFD-DEM simulations of the hydraulic conveying of coarse grains through a very-narrow elbow

Cited by 23 publications

References 34 publications

Erosive Wear Caused by Large Solid Particles Carried by a Flowing Liquid: A Comprehensive Review

Erosive Wear Caused by Large Solid Particles Carried by a Flowing Liquid: A Comprehensive Review

Resolved CFD-DEM Simulation of Free Settling of Polyhedral Particles with Various Orientations: Insights Provided by Oscillation Behavior in Quiescent Liquid

Numerical Simulations of Liquid-Solid Flows in A Vertical Pipe by MPS-DEM Coupling Method

Contact Info

Product

Resources

About