https://nova.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 Numerical analysis of rockfall hazard in open pit coal mines https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:13489 Wed 11 Apr 2018 16:28:46 AEST ]]> Numerical investigation of the energy absorption capacity of rockfall protection measures for underground portals https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:30508 Wed 11 Apr 2018 14:13:08 AEST ]]> Three-dimensional granular contact dynamics with rolling resistance https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:16836 Wed 11 Apr 2018 12:40:39 AEST ]]> Computer simulation of particle-bubble interactions using discrete element method https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:31091 Wed 11 Apr 2018 10:50:19 AEST ]]> Design of Optimized Convex Pattern Surface for Wear Tests in a TestRig https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:49285
The aim of this paper is to design samples with an optimal convex pattern for steel plates of 100 mm by 100 mm to verify the simulation results in a test rig for industrial scale experiments in Newcastle, Australia. In order to find an optimal convex pattern, a stepwise optimization, one-factor-at-a-time, is performed by optimizing four parameters of convex patterns. The geometric convex patterns were evaluated with the aid of Discrete Element Method (DEM). The simulated material was iron ore with d50 of 4.6 mm sliding down a smooth chute transitioning into bionic surfaces of different geometric configurations. Hertz-Mindlin (no slip) model with the Archard wear model were implemented to calculate the sliding wear volume.

Considering the direct relation between the dimensions of convexes and the sizes of particles, the ratios of a0, b0, c0 and d0 to d50 were used for analysis simulation results. The results show that a chute surface with circular convexes with a radius of 6 mm (a0:d50=1.3), spaced 25 mm apart in both horizontal and vertical directions (c0:d50=5.4), is optimal in reducing wear. This sample configuration and smooth surface will be tested to verify the predictability of the simulation approach.]]> Wed 10 May 2023 13:20:02 AEST ]]> Numerical Investigation of the Fragmentation Process in Marble Spheres Upon Dynamic Impact https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:41033 Wed 09 Aug 2023 09:55:26 AEST ]]> 3D numerical simulation of particle breakage using discrete element method https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:32464 Wed 06 Jun 2018 14:04:36 AEST ]]> Optimization of a convex pattern surface for sliding wear reduction based on a definitive screening design and discrete element method https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:43991 Wed 05 Oct 2022 14:43:23 AEDT ]]> Influence of Shell Thickness on the Colloidal Stability of Magnetic Core-Shell Particle Suspensions https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:44962 Tue 25 Oct 2022 12:56:32 AEDT ]]> An iterative sequential Monte Carlo filter for Bayesian calibration of DEM models https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:35174 Tue 25 Jun 2019 11:12:05 AEST ]]> Particle-based modelling of cortical meshes for soil retaining applications https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:35173 Tue 25 Jun 2019 10:16:07 AEST ]]> Second-order cone programming formulation of discontinuous deformation analysis https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:47622 Tue 24 Jan 2023 13:55:39 AEDT ]]> DEM Simulation of Chain aggregation of magnetizable particles in the presence of van der Waals Force https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:43155 Tue 13 Sep 2022 15:35:44 AEST ]]> Computational analysis of bubble loading https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:43103 Tue 13 Sep 2022 12:47:53 AEST ]]> Three-dimensional spherical discontinuous deformation analysis using second-order cone programming https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:44272 Tue 11 Oct 2022 14:20:38 AEDT ]]> Understanding granular media: from fundamentals and simulations to industrial application https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:33677 Tue 04 Dec 2018 16:13:52 AEDT ]]> A novel 3D clumped particle method to simulate the complex mechanical behavior of rock https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:37217 Tue 01 Sep 2020 15:17:53 AEST ]]> A discrete numerical method for brittle rocks using mathematical programming https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:36279 Thu 19 Mar 2020 17:51:48 AEDT ]]> Variation in property parameters of iron ore granulated mix with moisture content https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:32564 Thu 13 Jun 2019 11:49:57 AEST ]]> Numerical investigation of the strength variability of rock using DEM https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:39459 Thu 09 Jun 2022 09:08:28 AEST ]]> Experimental and numerical study of shear band propagation and the pre-failure behaviours of slope using transparent soil and discrete element method https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:55566 Thu 06 Jun 2024 17:28:34 AEST ]]> A coupled continuum and CFD model to investigate the effects of dust generation https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:8954 Sat 24 Mar 2018 08:37:10 AEDT ]]> Horizontal slug flow pneumatic conveying: numerical simulation and analysis of a thin slice approximation https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:13910 Sat 24 Mar 2018 08:25:27 AEDT ]]> Shock waves in granular materials: discrete and continuum comparisons https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:13909 Sat 24 Mar 2018 08:25:27 AEDT ]]> Modelling of multiple intra-time step collisions in the hard-sphere discrete element method https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:10853 Sat 24 Mar 2018 08:12:43 AEDT ]]> DEM simulation of single bubble flotation: implications for the hydrophobic force in particle-bubble interactions https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:20837 Sat 24 Mar 2018 08:05:57 AEDT ]]> Granular contact dynamics with particle elasticity https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:16725 Sat 24 Mar 2018 08:05:31 AEDT ]]> Influence of the hydrophobic force model on the capture of particles by bubbles: a computational study using discrete element method https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:19015 Sat 24 Mar 2018 08:05:28 AEDT ]]> Application of the distinct element method and the extended finite element method in modelling cracks and coalescence in brittle materials https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:20741 Sat 24 Mar 2018 08:00:23 AEDT ]]> Forces acting on a single introduced particle in a solid-liquid fluidised bed https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:20600 P2/dP1) and became independent of the foreign particle size for high solid fractions when the fluidised particle size was kept constant. The magnitude of collision force was 10-50 times greater than that of gravitational force and maximally 9 times greater than that of drag force. A correlation describing the collision force as a function of bed voidage was developed for Stp>65 and dP2/dP1≤2. A maximum deviation of less than 20% was obtained when the correlation was used for the prediction of particle collision force.]]> Sat 24 Mar 2018 07:55:33 AEDT ]]> Influence of the fluid shear rate on the breakage of magnetic particle chains https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:21223 Sat 24 Mar 2018 07:55:29 AEDT ]]> A contact dynamics approach to the granular element method https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:16865 Sat 24 Mar 2018 07:54:49 AEDT ]]> Discrete modelling of a tilt box test for granular materials https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:26840 Sat 24 Mar 2018 07:41:38 AEDT ]]> Computer simulations of particle-bubble interactions and particle sliding using Discrete Element Method https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:28503 Sat 24 Mar 2018 07:29:17 AEDT ]]> Effect of the hydrophobic force strength on particle-bubble collision kinetics: a DEM approach https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:28229 Sat 24 Mar 2018 07:28:39 AEDT ]]> Coupled discrete element-finite difference method for analysing the load-deformation behaviour of a single stone column in soft soil https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:26951 Sat 24 Mar 2018 07:27:04 AEDT ]]> Selective capture of binary mixtures of particles by a central bubble: a discrete element method study https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:27713 -3 and 2.0x10-5 N. The strength of the hydrophobic force between the particles in the second set and the bubble was then decreased by a maximum of 5 orders of magnitude with respect to the values in the first set. The results show that the total number of collected particles was larger for the top distribution than for the spherical one. This was due to the favouring action of gravity which pulled the particles towards the bubble in the former case and away from it in the latter case. In addition, in order to recover only particles from the first set while leaving the other particles in the bulk a reduction of the hydrophobic force strength of around 50 times was needed. It is intended that a further sophistication of this model by including fluid flow around the bubble would provide a useful tool to investigate the selective capture of particles in froth flotation.]]> Sat 24 Mar 2018 07:24:38 AEDT ]]> DEM simulation of particle-bubble capture through extended DLVO theory https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:24475 Sat 24 Mar 2018 07:17:26 AEDT ]]> Interaction of a spherical particle with a neutrally buoyant immiscible droplet in salt solution https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:24474 Sat 24 Mar 2018 07:17:26 AEDT ]]> Modelling the motion of a collected particle over a bubble surface https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:25145 Sat 24 Mar 2018 07:17:10 AEDT ]]> Analysis of mean free path in fluidisation using discrete element method https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:23401 Sat 24 Mar 2018 07:13:56 AEDT ]]> Kinetics of particle settling during solvent evaporation https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:23400 -20 J) and hydrodynamic resistance function. The evaporation rate was simulated based on a liquid pool evaporation model, which is a function of the area exposed, liquid properties, temperature and liquid saturation vapour pressure. As the area of liquid interface exposed is directly related to the evaporation rate, a discretised pixel map of the surface of the liquid was created. The decrease in the level of the liquid due to evaporation reduced the space available for the particles to move with the consequence that the aggregation rate increased. In addition, the decrease in the level of the liquid forced the particles to settle. When the height of the liquid was comparable to the height of the sediment, the evaporation process slowed down due to the reduction in the surface area available for evaporation. These findings foster a deeper understanding into the aggregation and deposition of nanoparticles and provide the first step to the analysis of the structure of the formed sediments which is our ultimate goal.]]> Sat 24 Mar 2018 07:13:54 AEDT ]]> Energy dissipation in agglomerates during normal impact https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:23609 Sat 24 Mar 2018 07:13:29 AEDT ]]> Computational analysis of the selective capture of binary mixtures of particles by a bubble in quiescent and fluid flow https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:24650 Sat 24 Mar 2018 07:11:53 AEDT ]]> Influences of self-organization of granular materials on particle crushing based on discrete element method https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:45509 Mon 31 Oct 2022 08:40:57 AEDT ]]> Discrete modelling jointed rock slopes using mathematical programming methods https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:42622 Mon 29 Aug 2022 09:21:12 AEST ]]> Discrete modeling of sand-tire mixture considering grain-scale deformability https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:42621 Mon 29 Aug 2022 08:53:18 AEST ]]> Simulation investigation of flow patterns and feeder loads at hopper/feeder interface https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:32541 Mon 24 Jun 2019 16:53:08 AEST ]]> Mathematical programming-based discrete element method in geomechanics https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:32147 Mon 23 Sep 2019 12:17:54 AEST ]]> Probabilistic calibration of discrete element simulations using the sequential quasi-Monte Carlo filter Probabilistic calibration of discrete element simulations using the sequential quasi-Monte Carlo filter https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:47559 Mon 23 Jan 2023 13:04:24 AEDT ]]> A general discrete element contact model for biomass material https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:49589 Mon 22 May 2023 12:57:03 AEST ]]> Discrete element modelling of a soil-mesh interaction problem https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:35324 Mon 15 Jul 2019 15:47:18 AEST ]]> Calibration procedure of Discrete Element Method (DEM) parameters for wet and sticky bulk materials https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:51562 Mon 11 Sep 2023 10:02:52 AEST ]]> Variables influencing the angle of repose of iron ore granulated mix https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:24503 Mon 08 Feb 2021 14:03:23 AEDT ]]> Grain learning: Bayesian calibration of DEM models and validation against elastic wave propagation https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:35426 Grain learning", which can extract grains from X-ray computed tomography (CT) images and perform Bayesian parameter estimation for DEM models of dry granular materials.]]> Mon 05 Aug 2019 09:58:17 AEST ]]> The angle of repose and size segregation of iron ore granules: DEM analysis and experimental investigation https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:30550 Fri 30 Aug 2019 13:21:53 AEST ]]> A three-dimensional hot flow model for simulating the alumina encapsulated NI-NIO methane-air CLC system based on the computational fluid dynamics-discrete element method https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:45495 Fri 28 Oct 2022 15:53:30 AEDT ]]> A static discrete element method with discontinuous deformation analysis https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:45483 Fri 28 Oct 2022 14:43:15 AEDT ]]> DEM modelling of particle-bubble capture through extended DLVO theory https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:33974 Fri 25 Jan 2019 14:41:59 AEDT ]]> 3D formulation of the deformable discrete element method https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:49404 Fri 12 May 2023 14:48:06 AEST ]]> Computational plasticity algorithm for particle dynamics simulations https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:44122 Fri 07 Oct 2022 14:26:31 AEDT ]]> An iterative Bayesian filtering framework for fast and automated calibration of DEM models https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:37044 Fri 07 Aug 2020 13:45:14 AEST ]]>