Journal ArticleDOI
Experimental and numerical study of fluidization and pressure drop of spherical and non-spherical particles in a model scale fluidized bed
TLDR
In this paper, a laboratory scale fluidized bed was examined experimentally and numerically involving differently sized wooden Geldart-D particle shapes, and simulations were performed with a coupled DEM-CFD approach, which involves a drag force model that realizes for the particle shape and orientation.About:
This article is published in Powder Technology.The article was published on 2016-04-01. It has received 110 citations till now. The article focuses on the topics: Particle & Pressure drop.read more
Citations
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Journal ArticleDOI
DEM/CFD-DEM Modelling of Non-spherical Particulate Systems: Theoretical Developments and Applications
TL;DR: A review of the recent efforts in developing discrete element method (DEM) approaches to model non-spherical particulate systems (NSPS) and strategies of coupling such a nonspherical DEM model with computational fluid dynamics (CFD) for particle-fluid flows is presented in this paper.
Journal ArticleDOI
CFD-DEM simulation of fluidization of rod-like particles in a fluidized bed
Huaqing Ma,Lei Xu,Yongzhi Zhao +2 more
TL;DR: In this article, the authors investigate the fluidization of the rod-like particles with different aspect ratios, using CFD-DEM coupling algorithm to simulate a bubbling fluidized bed, in which the rodlike particles are modeled by super-ellipsoids.
Journal ArticleDOI
The roles of particles in enhancing membrane filtration: A review
TL;DR: In this paper, the particle back-transport phenomenon is first elucidated, then the four possible enhancing roles of particles in membrane-filtration systems are discussed, namely, mechanical scouring, as adsorbents of organic foulants, as coagulants to form porous flocs, and as dynamic membranes to protect the primary membrane matrix.
Journal ArticleDOI
CFD modelling and simulation of drill cuttings transport efficiency in annular bends: Effect of particle sphericity
TL;DR: In this article, the authors used the Eulerian-Eulerian model to predict the flow behavior of non-spherical drill cuttings carried by a non-Newtonian fluid in an annular geometry.
Journal ArticleDOI
Nonspherical particles in a pseudo-2D fluidized bed : Experimental study
TL;DR: Experiments in pseudo‐2D fluidized beds are used to characterize the fluidization of spherocylindrical (rod‐like) Geldart D particles of aspect ratio 4 and the commonly used correlations to determine the pressure drop across a bed of nonspherical particles are compared to experiments.
References
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Journal ArticleDOI
A Computational Approach to Edge Detection
TL;DR: There is a natural uncertainty principle between detection and localization performance, which are the two main goals, and with this principle a single operator shape is derived which is optimal at any scale.
Journal Article
Discrete numerical model for granular assemblies.
Peter Cundall,Otto D. L. Strack +1 more
TL;DR: The distinct element method as mentioned in this paper is a numerical model capable of describing the mechanical behavior of assemblies of discs and spheres and is based on the use of an explicit numerical scheme in which the interaction of the particles is monitored contact by contact and the motion of the objects modelled particle by particle.
Journal ArticleDOI
A discrete numerical model for granular assemblies
Peter Cundall,Otto D. L. Strack +1 more
TL;DR: The distinct element method as mentioned in this paper is a numerical model capable of describing the mechanical behavior of assemblies of discs and spheres and is based on the use of an explicit numerical scheme in which the interaction of the particles is monitored contact by contact and the motion of the objects modelled particle by particle.
Book
Digital Image Processing Using MATLAB
TL;DR: 1. Fundamentals of Image Processing, 2. Intensity Transformations and Spatial Filtering, and 3. Frequency Domain Processing.
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