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Showing papers on "Particle published in 2022"


Journal ArticleDOI
TL;DR: In this article, a simulation of a bubbling fluidized bed (BFB) reactor is numerically studied based on a particle-scale computational fluid dynamics discrete element method (CFD-DEM), with thermochemical and polydispersity effects featuring.

38 citations


Journal ArticleDOI
TL;DR: In this article, the effects of particle characteristics including its species, size, proportion, morphology on the ionic conductivity and mechanical properties of composite polymer electrolyte (CPE) are reviewed.

33 citations


Journal ArticleDOI
TL;DR: In this paper, the combustion behavior of single laser-ignited iron particles is investigated by post-processing recorded high-speed camera images using an in-house developed particle tracking program.

31 citations


Journal ArticleDOI
TL;DR: In this article, the effect of particle wake on the heat transfer characteristics between interactive particles in supercritical water is simulated and analyzed, and the main influencing factors include particle distance, Reynolds number (Re), particle temperature and pressure.

27 citations


Journal ArticleDOI
TL;DR: In this paper, a polysaccharide-based particle as curcumin carrier was developed through self-assembly driven by electrostatic interactions between carboxymethylated corn fiber gum (CMCFG) and chitosan (Cs).

22 citations


Journal ArticleDOI
TL;DR: In this paper, the influence of particle properties on the battery performance from three perspectives: particle size, particle size distribution, and particle shape was analyzed, and a deep understanding of the effect and mechanism of particles on electrodes and batteries will help develop and manufacture practical lithium-ion batteries.

22 citations


Journal ArticleDOI
TL;DR: In this article, the effect of particle size on the shear strength of granular materials is investigated and the results show that particle size is important for geotechnical design and construction.
Abstract: Understanding the effect of particle size on the shear strength of granular materials is important for geotechnical design and construction. However, previous studies show contradicting res...

21 citations


Journal ArticleDOI
TL;DR: In this article, two types of MgO-C refractories with tight particle grading and non-tight particle grading were prepared according to Andreasen's continuous packing theory.
Abstract: Two types of MgO-C refractories with tight particle grading and non-tight particle grading were prepared according to Andreasen's continuous packing theory. Fracture behaviors were investigated using wedge splitting tests combined with digital image correlation method and acoustic emission techniques. The results indicated that MgO-C refractory with non-tight particle grading treated at 1400 ℃ had more in situ phases (e.g., AlN and MgAl2O4) and exhibited less brittleness than specimens with tight particle grading even though they had similar nominal tensile strengths. In contrast, specimens with non-tight particle grading had greater horizontal strain under various loading stages, reflecting their better ability to resist rupture deformation. In addition, more microcracks were initiated earlier in the pre-peak region, and more energy was consumed. The decrease in coarse particles and corresponding increase in fine powder content increased the interface between particles, benefiting for reducing the local stress concentration and improving the thermal shock resistance of refractories.

19 citations


Journal ArticleDOI
01 Feb 2022-Fuel
TL;DR: In this article, a modified PPG product, the high temperature resistant re-crosslinkable preformed particle gel (HT-RPPG), was evaluated in the presence of open fractures, void conduits, wormholes, and so on.

18 citations


Journal ArticleDOI
TL;DR: A resolved coupling model to simulate interaction between two-phase fluids and irregularly shaped particles by using Computational Fluid Dynamics (CFD) and Discrete Element Method (DEM) is developed, showing great potential to apply this model in coastal engineering.

18 citations


Journal ArticleDOI
TL;DR: In this article, a coarse-grained method for the Hertz-Mindlin contact force, rolling friction, and conductive heat transfer between particles is proposed for the first time.

Journal ArticleDOI
TL;DR: In this article, the hydrodynamics and thermochemical characteristics of the sorption enhanced steam methane reforming process in a fluidized bed reactor are studied with a multiphase particle-in-cell model.

Journal ArticleDOI
TL;DR: In this article, a mixture of bioactive ions (Mg, Sr, Zn), doped carbonated hydroxyapatite powders (dHAp) and pure carbonated hydroxapatites (HAp), were prepared by wet chemical precipitation method by co-precipitation from solution containing the appropriate amount of chloride salt of different ions.

Journal ArticleDOI
TL;DR: In this article, the effect of particle concentration and internal phase fraction on HIPPE morphology, stability and rheological behaviors was investigated, which indicated the successful construction of unique bilayer interfacial structures consisting of inner ZNPs layer and outer SNC layer.

Journal ArticleDOI
TL;DR: In this article, the authors present the results of calibration of the physical and mechanical parameters of the particles of the soil medium model described by the discrete element method, which is used as a contact model, the model was implemented in the Rocky DEM programme.
Abstract: Modelling of the tillage process by working tools based on the method of discrete elements is currently the most promising. The results of modelling the processing process obtained by the method of discrete elements adequately describe the behaviour of the soil. Due to the large number of physical and mechanical parameters included in the description of contact models of discrete elements, the calibration process takes a lot of time. Thus, we set a research goal - to evaluate the significance of the parameters of the contact model particles in soil modelling by the discrete element method and to obtain nomograms for selecting the parameters of the Hertz-Mindlin contact model particles depending on the humidity of various types of soils. The article presents the results of calibration of the physical and mechanical parameters of the particles of the soil medium model described by the discrete element method. An improved Hertz-Mindlin JKR model was used as a contact model, the model was implemented in the Rocky DEM programme. The following properties of the modelled particles are taken as the studied factors – Poisson's ratio, static and dynamic friction coefficients, Jung's modulus, surface energy, and particle diameter. The detection of the natural slope angle of the soil was carried out for black soils of clay, light loam and sandy loam mechanical composition. The calibration was performed according to the angle of the natural slope. Comparison of the simulation results with field experiments of typical soils made it possible to establish that the nature of the change in the angle of the natural slope of the simulated soil environment is significantly affected by the surface energy and the diameter of the particles. The obtained dependences of the angle of natural slope on soil moisture and surface energy allow determining the parameters for the Hertz-Mindlin contact model as a function of humidity for Black soil zones of clay, light loam and sandy loam mechanical composition. Based on the results of field and model experiments, a nomogram was obtained that makes it possible to select parameters for the contact model - the diameter of soil particles and the value of surface energy depending on humidity and soil type. The obtained values of the parameters of the particles of the soil medium make it possible to simulate the process of tillage, optimize the design and technical parameters of the newly created working parts of tillage machines.

Journal ArticleDOI
01 Jan 2022-Fuel
TL;DR: In this article, the particle size of tectonic coal is reduced under the pulverization effect during the formation process, and the particle sizes of these types of coal reach millimeter level or even smaller scale under pulverized state.

Journal ArticleDOI
TL;DR: In this paper, the effect of geometric configurations on flow hydrodynamics, heat transfer, and residence time distribution in a pilot-scale biomass pyrolysis vapor phase upgrading (VPU) reactor is comprehensively studied by numerical simulations.

Journal ArticleDOI
15 Jan 2022-Energy
TL;DR: In this paper, the Half Mini Differential Mobility Analyser (HM-DMA) was used to evaluate the effect of the ethanol blend on sub-23 nm particle emissions in a small direct/port fuel injection, spark ignition engine with gasoline, ethanol and a 30 %v/v ethanol blend.

Journal ArticleDOI
TL;DR: In this paper, mass flow rate measurements of lean (UNS S32101), standard and super powders specified for directed energy deposition on three commercial powder feeders were identified through powder and rheological characterization tools.

Journal ArticleDOI
TL;DR: In this article, the locations of recirculation zones and the shapes of Mach disks were analyzed in detail for the type of discrete-jet closed-coupled gas atomization nozzle.

Journal ArticleDOI
TL;DR: In this article, small oscillatory shear tests were performed for dilute Ti3C2Tz MXene aqueous dispersions as a function of their concentration and temperature.

Journal ArticleDOI
15 Jan 2022-Energy
TL;DR: In this article, the relationship between particle size and gas-carrying capacity and its influence on combustion temperature was investigated, four different particle size ranges of sawdust i.e. 150-180, 181-250, 251-380, and 381-830-μm were employed to investigate the relationship.

Journal ArticleDOI
TL;DR: In this article, the effect of particle shape on the conveying characteristics of a full-scale twin screw granulator with non-spherical particles was investigated using a GPU-enhanced discrete element method (DEM).

Journal ArticleDOI
TL;DR: In this paper, a novel hollow particle with double-shell composed with CuS and Mn(OH)2 is synthesized by coordination etching, precipitation and sulfuration using tetrakaidecahedral Cu2O as template.

Journal ArticleDOI
TL;DR: In this paper, a quasi-steady model is proposed to predict at what ambient temperature can thermal runaway occur for a burning metal particle exposed to an oxidizing gas, and the solutions are produced and discussed for particles of different sizes for aluminum, magnesium, and boron burning in air.

Journal ArticleDOI
TL;DR: In this paper, the authors used the discrete element method (DEM) to investigate the conveying process of non-spherical particles in a horizontal screw conveyor, with particles being modeled by super-ellipsoids.

Journal ArticleDOI
TL;DR: In this paper, a model describing the adsorption of SO3 and SO2 by Ca(OH)2 particles was established, based on the combination of the product-island growth model and the grain model.

Journal ArticleDOI
15 Feb 2022-Fuel
TL;DR: Powders with irregular and spherical particle shapes were prepared by a planetary mill with hardened steel vials and milling media as mentioned in this paper, and they were characterized using electron microscopy, x-ray powder diffraction, nitrogen adsorption, thermal analysis and ignition measurements.

Journal ArticleDOI
TL;DR: In this article, a simplified model for the plastic flow in a deforming particle is developed which accounts for the dependence of the yield strength on the effective local strain rate, which satisfies the conditions of impenetrability of the substrate.

Journal ArticleDOI
TL;DR: In this paper, the authors studied the rheology and annular flow of a smart lost circulation material (LCM) at 160°C, using a high-temperature flow loop.