Numerical Simulation and Modeling of Granular Material

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Particle Processes".

Deadline for manuscript submissions: closed (31 July 2024) | Viewed by 664

Special Issue Editors


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Guest Editor
School of Engineering, University of Greenwich, Chatham ME4 4TB, UK
Interests: additive manufacturing; particulate material handling; mixing and multiphase flow; pneumatic conveying system

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Guest Editor Assistant
School of Engineering, University of Greenwich, Chatham ME4 4TB, UK
Interests: bulk solids handling technology; powder flowability, caking, segregation and characterisation

Special Issue Information

Dear Colleagues,

The purpose of this Special Issue is to highlight cutting-edge research in the field of numerical simulation and modeling for granular materials, shedding light on the complex behaviour of particulate systems. Granular materials, which are used in fields such as pharmaceuticals and civil engineering, have complex dynamics that are impacted by interparticle interactions, particle size distributions, and environmental variables. This Special Issue of Processes provides an avenue for academics to discuss novel computational tools, numerical techniques, and modeling methodologies that could help us better understand the behaviour of granular material.

Contributions from a variety of disciplines, including physics, engineering, and materials science, are encouraged. Granular flow, segregation, packing dynamics, and the impact of external pressures are all topics of interest. The Special Issue aims to stimulate collaboration and the exchange of ideas through this diverse collection of research, paving the way for breakthroughs in industries relying on the manipulation and processing of granular materials. This collection will be beneficial to researchers and practitioners alike for acquiring insights into the numerical complexities that govern the behaviour of granular materials.

Dr. Hamid Salehi
Guest Editor

Dr. Vivek Garg
Guest Editor Assistant

Manuscript Submission Information

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Keywords

  • granular materials
  • numerical simulation
  • modeling
  • particle dynamics
  • granular flow
  • segregation
  • packing behaviour
  • computational approaches
  • additive manufacturing
  • industrial applications

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Published Papers (1 paper)

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Research

15 pages, 25758 KiB  
Article
Numerical Simulation of Rock Vibration Response under Ultrasonic High-Frequency Vibration with High Confining Pressure
by Minsheng Wang, Lingchao Xuan, Weikai Liu, Jinyu Feng and Heng Wang
Processes 2024, 12(7), 1394; https://doi.org/10.3390/pr12071394 - 4 Jul 2024
Viewed by 483
Abstract
As deep oil and gas resources and Carbon Capture and Storage (CCS) are developed, enhancing drilling efficiency in hard rock formations has emerged as a critical technology in oil and gas extraction. The advancement of ultrasonic, high-frequency vibration rock-breaking technology significantly facilitates efficient [...] Read more.
As deep oil and gas resources and Carbon Capture and Storage (CCS) are developed, enhancing drilling efficiency in hard rock formations has emerged as a critical technology in oil and gas extraction. The advancement of ultrasonic, high-frequency vibration rock-breaking technology significantly facilitates efficient rock crushing. When subjected to ultrasonic high-frequency vibrations, the rock’s response is a crucial issue in implementing ultrasonic vibration rock crushing technology. This study employed numerical simulation and theoretical deduction methods, utilizing a multi-physics approach that couples solid mechanics with pressure acoustics. It integrated information on common influencing parameters of ultrasonic generators and reservoir rock properties to establish model parameters, analyze simulation results, and perform theoretical deductions. The research investigated the response patterns of different-sized rock samples under high-frequency ultrasound vibration excitation across various frequencies, amplitudes, and confining pressure conditions. Through the development of a three-dimensional model and the application of principles from solid mechanics and elastoplasticity, the study derived equations that describe the resonance frequencies of rock blocks under confining pressure as functions of relevant rock parameters. The findings indicate that ultrasonic vibrations can effectively induce rock displacement. Under excitation frequency sources, the rock exhibits a natural frequency correlated with the rock sample size. When the excitation frequency approximates the natural frequency, the rock resonates. At this point, the rock’s surface displacement is maximal. The rock undergoes tensile stress, leading to stress concentration that facilitates rock damage and fragmentation. Increasing the excitation amplitude enhances rock crushing, as it amplifies the maximum surface displacement under the same frequency excitation. Confining pressure exerts an inhibitory effect on the rock’s vibration response, but it does not alter the resonance frequency of the rock sample, a fact verified by both numerical simulation and theoretical results. Based on the research findings in this paper, it can help to optimize the parameters of ultrasonic vibration rock breaking in field application to achieve the best rock-breaking effect. Full article
(This article belongs to the Special Issue Numerical Simulation and Modeling of Granular Material)
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