https://nova.newcastle.edu.au/vital/access/manager/Index ${session.getAttribute("locale")} 5 Prediction of terminal velocity of fractal aggregates with IBM-LBM method https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:46786 Wed 30 Nov 2022 13:21:37 AEDT ]]> Dynamic study of frost formation on cryogenic surface https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:45281 Wed 26 Oct 2022 16:10:21 AEDT ]]> Influence of interfacial gas enrichment on controlled coalescence of oil droplets in water in microfluidics https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:47733 Wed 25 Jan 2023 14:46:25 AEDT ]]> Picking up and placing a liquid marble using dielectrophoresis https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:35399 Wed 24 Jul 2019 12:41:21 AEST ]]> Evaporation of a sessile binary droplet on a heated spherical particle https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:44647 Wed 19 Oct 2022 08:46:30 AEDT ]]> Estimation of dispersion coefficient in a solid-liquid fluidised bed system https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:47153 i/) were determined in a solid-liquid fluidised bed comprising glass particles (dS = 8 mm, ρS = 2230 kg m−3) and water as a fluidising medium. Both inter-particle and particle-wall collisions were determined from the time varying jerk data. The particle mean-free path (λ) was then estimated as a distance between two successive peaks in the jerk profile. Finally, dispersion efficient D was computed based on the product of λ and V. Estimated dispersion coefficients were compared with the available correlations and reasonable agreement was obtained.]]> Wed 14 Dec 2022 15:34:32 AEDT ]]> Manipulation of a floating liquid marble using dielectrophoresis https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:35480 Wed 14 Aug 2019 14:34:13 AEST ]]> Analysis of turbulence energy spectrum by using particle image velocimetry https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:17143 Wed 11 Apr 2018 15:39:34 AEST ]]> Effect of a cluster on gas-solid drag from Lattice Boltzmann simulations https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:17146 Wed 11 Apr 2018 15:31:09 AEST ]]> Numerical simulation of the collision of a droplet with a heated solid surface https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:17145 Wed 11 Apr 2018 15:03:29 AEST ]]> Interactions between halide anions and interfacial water molecules in relation to the Jones-Ray effect https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:17008 Wed 11 Apr 2018 15:02:33 AEST ]]> Modelling and measurement of bubble formation and growth in electroflotation processes https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:17009 Wed 11 Apr 2018 09:46:45 AEST ]]> Interaction of a spherical particle with a neutrally buoyant immiscible droplet in salt solution https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:34085 Wed 06 Feb 2019 16:16:37 AEDT ]]> Bubble detachment from a steel ball in turbulent field: application to mineral flotation systems https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:25544 Tue 16 Oct 2018 12:08:02 AEDT ]]> Measuring the Coefficient of Friction of a Small Floating Liquid Marble https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:25239 Tue 16 Oct 2018 12:07:29 AEDT ]]> Analysis of particle dispersion coefficient in solid-liquid fluidised beds https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:37703 Tue 16 Mar 2021 18:12:51 AEDT ]]> Effect of baffles on performance of fluid catalytic cracking riser https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:44223 Tue 11 Oct 2022 09:12:40 AEDT ]]> Dynamics of a single bubble rising in a quiescent medium https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:46747 Tue 09 Jan 2024 11:43:13 AEDT ]]> Study on hydrodynamic performance of structured packings for gas-liquid flow: effects of geometry parameters https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:39805 Tue 09 Aug 2022 15:32:44 AEST ]]> The effects of variable thermophysical properties on droplet evaporation in high temperature convective flow environment https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:26049 Tue 07 Feb 2017 09:23:41 AEDT ]]> A review of CFD modelling studies on the flotation process https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:42883 Tue 06 Sep 2022 11:51:29 AEST ]]> Determining Drag Coefficient of Simplified Dendritic Particles in Metallurgical Systems https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:40634 Tue 05 Sep 2023 15:13:06 AEST ]]> Dynamic behaviour of a magnetically actuated floating liquid marble https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:31391 Thu 25 Jan 2018 13:47:45 AEDT ]]> Accurate dielectrophoretic positioning of a floating liquid marble with a two-electrode configuration https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:45507 Thu 22 Jun 2023 12:20:03 AEST ]]> Bubbles in viscous liquids: time dependent behaviour and wake characteristics https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:24590 Eo (=ΔρgD²/σ)≤641 and Re≤151. Additionally, results published in the literature encompassing bubbles with lower values of Eo numbers were also considered, such that the overall dependencies of bubble shape, wake characteristics, and drag coefficient over a large range of Eo and Re values can be identified. While it was found that the deformation of the bubbles as predicted through the numerical study can generally replicate experimental observations presented, several limitations were identified, such as in the representation of skirt formation behind a skirted bubble and the formation of satellite bubbles behind a bubble rising at high Reynolds numbers. The dependency of the bubble aspect ratio on the Weber and Morton numbers was confirmed for cases of spherical and ellipsoidal bubbles; whilst for spherical cap and skirted bubbles the aspect ratio was found to depend largely on the Reynolds and Capillary numbers, respectively. Finally, the expansion and formation of closed/open laminar wakes behind the rising bubble were analysed and was found to correlate well with the bubble Re and Eo numbers.]]> Thu 21 Oct 2021 12:53:06 AEDT ]]> Interactions in droplet and particle system of near unity size ratio https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:32959 Thu 16 Aug 2018 13:36:14 AEST ]]> Segregation and dispersion studies in binary solid-liquid fluidised beds: a theoretical and computational study https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:32957 -5 to 5 × 10-4 m2 s-1 when energy dissipation rate increased from ~ 0.005-0.01 m² s-3. Different dispersion correlations were then utilized to describe the intermixing and segregation behaviour for the binary particle species differing in density in terms of axial particle concentration profile using a one-dimensional convection-diffusion model which agreed well with the experimental data. Additionally, a two-dimensional (2D) Eulerian-Eulerian (E-E) model based on kinetic theory of granular flow (KTGF) was used to simulate axial variation of the binary solids concentration which showed good agreement (~ 10% deviation) with the published experimental data. Axial profile of dispersion coefficient predicted by the various correlations exhibited a sharp variation in the intermixing zone formed in between the lower (higher density) and upper particle bed (low density). In this region, CFD model predicted energy dissipation rate increased significantly with liquid superficial velocity which reflected strong phase interactions in the intermixing zone.]]> Thu 16 Aug 2018 13:36:10 AEST ]]> Instabilities due to turbulence through inlet jet in plunging jet bubble column https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:32954 f₁, has been proposed (see for example Joshi et al. (2001)). Briefly, the LSA analysis utilises the velocity fluctuations of both the dispersed and continuous phases associated with the specific energy dissipation rate of the two phase mixture. Typically, the specific energy dissipation rate is correlated with the density of the bed. The previous analysis, however, does not consider the energy input which associated with the turbulence intensity (velocity fluctuations) of the incoming liquid stream. Usually, this component can be ignored in sparged bubble columns because its magnitude is relatively small and it also decays in the axial direction. In plunging liquid jet bubble columns the liquid is introduced as a high speed jet that entrains gas which is then broken into fine bubbles in the Mixing Zone. The bubby mixture then passes into the Two Phase Flow Zone where instabilities can be generated. The Mixing Zone is a region of high energy dissipation resulting in relatively large liquid velocity fluctuations, which can directly influence the instability of the Two Phase Flow Zone. In this study the existing linear stability analysis is modified to include the influence of inlet liquid velocity fluctuations on the stability parameter, f₁. The modified theory is applied to the previous work of Evans (1990) for a plunging liquid jet bubble column to determine the critical gas volume fraction at which transition takes place in the Two Phase Flow Zone. In order to apply the model, drift-flux analysis has been used to obtain bubble diameter as a function of gas and liquid superficial velocities, and computational fluid dynamics has been utilised to quantify the velocity fluctuations of the liquid exiting the Mixing Zone.]]> Thu 16 Aug 2018 13:36:04 AEST ]]> Settling/rising of a foreign particle in solid-liquid fluidized beds: application of dynamic mesh technique https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:32955 Thu 16 Aug 2018 13:35:45 AEST ]]> Expansion behaviour of a binary solid-liquid fluidised bed with different solid mass ratio https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:32956 -3) spherical glass beads particles of diameter 3, 5 and 8 mm and water as fluidising medium with different particle mass ratios varying from 0.17 to 6.0. In the expanded bed, both segregated and intermixed zones were observed depending on the different particle diameter combinations. In a completely segregated SLFB, the bottom monosized layer exhibited a negative deviation ~23% whereas a positive deviation ~25% was found in the top monosized layer when compared with the corresponding pure monosized system. A small mixing zone spanning approximately two particle diameters thick was observed to exist even in a completely segregated SLFB for higher diameter ratio cases. A slight decrease in the mixing zone height was noted with increasing liquid superficial velocity. For lower diameter ratio cases, a relatively lager mixing zone height was observed which increased with increasing liquid superficial velocity. The bed expansion ratio was noted to decrease with increasing solid mass ratio however it increased with increase in the fluidising velocity ratio following a reasonable power law trend. The expanded bed height of the binary mixture was not entirely additive of its corresponding mono-component bed heights and both positive and negative deviations were observed. Finally, a two-dimensional (2D) Eulerian-Eulerian (E-E) model incorporating the kinetic theory of granular flow (KTGF) was used to quantify the binary system hydrodynamics. The model predicted expanded bed height agreed with experimental measurements within ±6% deviation. Presence of a mixing zone was also confirmed by the CFD model and simulated particle phase volume fraction distribution qualitatively agreed with the experimental visualisations.]]> Thu 16 Aug 2018 13:31:39 AEST ]]> Modulation of turbulent flow field in an oscillating grid system owing to single bubble rise https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:43290 Thu 15 Sep 2022 12:44:32 AEST ]]> Modeling of Cryogenic Liquefied Natural Gas Ambient Air Vaporizers https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:43284 Thu 15 Sep 2022 12:30:31 AEST ]]> Instabilities of a freely moving spherical particle in a Newtonian fluid: Direct Numerical Simulation https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:46070 1). Fast Fourier Transform (FFT) analysis characterized the presence of a bimodal frequency similar to that exhibited by flow past an isolated stationary bluff body.]]> Thu 10 Nov 2022 15:12:01 AEDT ]]> Evaluation of local energy dissipation rate using time resolved PIV https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:13556 Sat 24 Mar 2018 08:17:06 AEDT ]]> A mechanism for the influence of humidity on foam stability https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:13333 Sat 24 Mar 2018 08:17:01 AEDT ]]> Prediction of regime transition in three-phase sparged reactors using linear stability analysis https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:20228 −3 m) and terminal rise velocity (80–340 × 10−3 m/s), particle settling velocity (1–1000 × 10−3 m/s), particle concentration (0.0007–30 vol%) and slurry density (800–5000 kg/m3). It was observed that the developed model predicts the transition gas holdup within an absolute deviation of 12% for three-phase sparged reactors. It was also observed that the developed generalized stability criterion predicts the regime transition in two-phase systems satisfactorily when applied to bubble columns.]]> Sat 24 Mar 2018 08:06:49 AEDT ]]> Flooding in a vertically rising gas-liquid foam https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:20701 Sat 24 Mar 2018 08:06:22 AEDT ]]> Stability analysis in solid-liquid fluidized beds: experimental and computational https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:20915 Sat 24 Mar 2018 08:06:12 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 ]]> Effect of a cluster on gas-solid drag from lattice Boltzmann simulations https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:19002 Sat 24 Mar 2018 08:05:33 AEDT ]]> Detachment of a bubble anchored to a vertical cylindrical surface in quiescent liquid and grid generated turbulence https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:19539 Sat 24 Mar 2018 08:02:05 AEDT ]]> Influence of microwaves on the water surface tension https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:20417 Sat 24 Mar 2018 08:00:54 AEDT ]]> Modelling of the interaction between a falling n-heptane droplet and hot solid surface https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:20753 Sat 24 Mar 2018 08:00:25 AEDT ]]> Effect of inlet boundary conditions on computational fluid dynamics (CFD) simulations of gas-solid flows in risers https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:21865 Sat 24 Mar 2018 07:59:12 AEDT ]]> Effect of environmental humidity on static foam stability https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:20884 Sat 24 Mar 2018 07:57:57 AEDT ]]> Formation and motion of conjunct bubbles in glycerol-water solutions https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:20888 Sat 24 Mar 2018 07:57:55 AEDT ]]> Foam flowing vertically upwards in pipes through expansions and contractions https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:17738 Sat 24 Mar 2018 07:57:39 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 ]]> An energy model on particle detachment in the turbulent field https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:20300 Sat 24 Mar 2018 07:55:09 AEDT ]]> Hydrodynamics of a rectangular liquid JET in an immiscible liquid-liquid system https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:20034 Sat 24 Mar 2018 07:50:54 AEDT ]]> Verification of EMMS formulation using lattice Boltzmann simulations https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:18569 Sat 24 Mar 2018 07:50:09 AEDT ]]> Effect of closure models on Eulerian-Eulerian gas-solid flow predictions in riser https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:26856 Sat 24 Mar 2018 07:41:46 AEDT ]]> Comparison of specific energy dissipation rate calculation methodologies utilising 2D PIV velocity measurement https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:27090 Sat 24 Mar 2018 07:40:35 AEDT ]]> Experiments on the detachment of particles from bubbles in a turbulent vortex https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:26100 Sat 24 Mar 2018 07:39:51 AEDT ]]> Fluidisation and packed bed behaviour in capillary tubes https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:28495 Sat 24 Mar 2018 07:39:32 AEDT ]]> Effect of turbulence on particle and bubble slip velocity https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:28747 dPD=5–12 mm) and single air bubbles (dB=1–4 mm) has been measured in a solid–liquid fluidized bed of uniform size borosilicate glass beads (dP=5 and 8 mm) as a function of liquid superficial velocity. The homogeneity and intensity of the turbulence within the fluidized bed has been quantified and directly related to the slip velocity of the foreign (steel or bubble) particle. It was found that the turbulence resulted in an increase in the computed drag coefficient for all of the experimental conditions investigated.]]> Sat 24 Mar 2018 07:37:35 AEDT ]]> Segregation and dispersion of binary solids in liquid fluidised beds: a CFD-DEM study https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:29668 p≤40, ∈L, ave≤0.74), particle collisions acted as the main mechanism that drove the dispersion of particles. However, after the system became heterogeneous, the magnitude of the vertical collision force decreased towards zero and correspondingly, the magnitude of the vertical fluid drag force was approaching that of the particle net weight force as the superficial liquid velocity increased. Therefore, in the heterogeneous flow regime (Rep>40, ∈L, ave>0.74), the local turbulence of the fluid flow and particle collisions (if there were any) were found to be the main mechanisms that drove the dispersion of particles in all directions. The dispersion coefficient of individual particles varied significantly throughout the system in the heterogeneous flow regime. The simulation results reasonably agreed with the experimental data and the prediction results by existing correlations.]]> Sat 24 Mar 2018 07:32:22 AEDT ]]> A review of stochastic description of the turbulence effect on bubble-particle interactions in flotation https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:26069 Sat 24 Mar 2018 07:31:30 AEDT ]]> Influence of grid-generated turbulence on detachment of a bubble anchored to a vertical cylindrical surface: application to mineral flotation systems https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:28936 Sat 24 Mar 2018 07:31:27 AEDT ]]> A microfluidic method for investigating ion-specific bubble coalescence in salt solutions https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:25312 NaCl > NaBr > NaI. The microfluidic method overcomes the inherent uncertainties in conventional large-scale devices and methods.]]> Sat 24 Mar 2018 07:30:20 AEDT ]]> The dynamic contact angle of a bubble with an immersed-in-water particle and its implications for bubble-particle detachment https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:25484 Sat 24 Mar 2018 07:30:03 AEDT ]]> Bubble-particle detachment in a turbulent vortex I: experimental https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:25491 Sat 24 Mar 2018 07:30:00 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 ]]> CFD-DEM simulation of binary systems of particles in liquid fluidised beds: segregation and dispersion https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:26431 Sat 24 Mar 2018 07:27:29 AEDT ]]> Bubble generated turbulence and direct numerical simulations https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:30864 Sat 24 Mar 2018 07:26:37 AEDT ]]> Measurement of fluctuating velocities and dispersion behaviour of particles in a solid-liquid fluidised bed https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:26045 Sat 24 Mar 2018 07:26:27 AEDT ]]> Pressure drop and voidage measurement in solid-liquid fluidized bed: experimental, mathematical and computational study https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:26046 Sat 24 Mar 2018 07:26:26 AEDT ]]> Interfacial water structure at surfactant concentrations below and above the critical micelle concentration as revealed by sum frequency generation vibrational spectroscopy https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:26701 Sat 24 Mar 2018 07:26:24 AEDT ]]> Experimental investigation on modulation of homogeneous and isotropic turbulence in the presence of single particle using time-resolved PIV https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:26571 Sat 24 Mar 2018 07:26:11 AEDT ]]> Flow visualizations around a bubble detaching from a particle in turbulent flows https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:26568 Sat 24 Mar 2018 07:26:11 AEDT ]]> Evaporation of a droplet on a heated spherical particle https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:26549 Sat 24 Mar 2018 07:26:08 AEDT ]]> Bed expansion behaviour in a binary solid-liquid fluidised bed with different initial solid loading- CFD simulation and validation https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:25528 -3) were used as fluidised particles. Three different combinations of particle size pairs of both equal and unequal mass ratios were used using a constant liquid (water) superficial velocity of 0.17 ms-1 in all the cases. Numerically, a two dimensional Eulerian-Eulerian (E-E) CFD model incorporating kinetic theory of granular flow (KTGF) was developed to predict the bed expansion behaviour. It was observed that complete bed segregation occurred when the difference between the solid particle diameters was higher while lower difference in particle diameters led to partial bed segregation. The CFD model also predicted these behaviours which were in good agreement with the experimental data.]]> Sat 24 Mar 2018 07:26:07 AEDT ]]> Expansion behavior of binary solid-liquid fluidised bed with different solid mass ratio https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:25529 -3 were fluidised in water. Binary experiments were carried out considering both equal and unequal solid mass ratios ranging from 0.16 to 6.0. The overall bed expansions including segregated and intermixed zones were monitored. The effect of loading pattern on bed expansion was found insignificant in a binary SLFB. In a completely segregated SLFB, bottom mono-component layer displayed a negative deviation up to 30% whereas a positive deviation up to 22% was found in top mono-component layer when compared to respective individual monocomponent SLFBs. The total bed height of binary mixture was found to be unequal to sum of expanded bed height in individual mono-component SLFB, showing either positive or negative deviations. The experimentally observed criterion of the bed independency has been tabulated. Eulerian-Eulerian (E-E) CFD simulations with kinetic theory of granular flow (KTGF) have been performed and compared with the experimental data. The CFD predictions were found to be in good agreement (within ±6 per cent deviation) when compared to experimental results.]]> Sat 24 Mar 2018 07:26:07 AEDT ]]> Influence of jet-jet interaction on droplet size and jet instability in immiscible liquid-liquid system https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:27057 Sat 24 Mar 2018 07:25:20 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 ]]> Collision behaviour of a small spherical particle on a large stationary droplet https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:23747 Sat 24 Mar 2018 07:16:57 AEDT ]]> Behaviour and dynamics of two bubbles in conjunct condition in high-viscosity liquids https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:25094 Sat 24 Mar 2018 07:15:03 AEDT ]]> A floating self-propelling liquid marble containing aqueous ethanol solutions https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:22557 Sat 24 Mar 2018 07:14:46 AEDT ]]> A method for calculating the surface area of numerically simulated aggregates https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:24402 Sat 24 Mar 2018 07:14:27 AEDT ]]> Influence of primary particle size distribution on nanoparticles aggregation and suspension yield stress: a theoretical study https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:23569 Sat 24 Mar 2018 07:12:46 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 ]]> Remarks on approaches that relate foam drainage rate to bubble terminal velocity https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:23754 Sat 24 Mar 2018 07:11:10 AEDT ]]> A review of the mechanisms and models of bubble-particle detachment in froth flotation https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:25043 Sat 24 Mar 2018 07:10:43 AEDT ]]> Evaporation of ethanol-water binary mixture sessile liquid marbles https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:24980 Sat 24 Mar 2018 07:09:56 AEDT ]]> Computational fluid dynamic modelling of FCC riser: a review https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:25003 Sat 24 Mar 2018 07:09:54 AEDT ]]> Interaction dynamics of a spherical particle with a suspended liquid film https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:24063 Sat 24 Mar 2018 07:09:41 AEDT ]]> Three-dimensional VOF-DEM model for simulating particle dynamics in the liquid slugs of a vertical gas-liquid-solid Taylor flow microreactor https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:41059 Mon 25 Jul 2022 15:45:25 AEST ]]> Micromixing performance and the modeling of a confined impinging jet reactor/high speed disperser https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:48816 Mon 10 Apr 2023 10:28:46 AEST ]]> Inclusion of screening to remove fish-hook effect in the three products hydro-cyclone screen (TPHS) https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:48814 Mon 10 Apr 2023 10:21:49 AEST ]]> 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 ]]> Effect of bubble on the pressure spectra of oscillating grid turbulent flow at low Taylor-Reynolds number https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:35930 b = 2.70 and 3.52 mm) rise using the non-intrusive two-dimensional (2D) particle image velocimetry (PIV) at the low Taylor-Reynolds number (Reλ) ranging from 12 to 60. Using the measured PIV velocity data, the instantaneous pressure fluctuations were estimated by integrating the full viscous form of the Navier-Stokes (N-S) equation and compared with three dimensional (3D) computational fluid dynamics (CFD) simulations. A spectral slope of -7/3 was found in the inertial subrange of the single-phase pressure spectrum. In contrast, the two-phase pressure spectrum exhibited a slope less steep than -7/3 in the inertial subrange because of the extra production of turbulence in the presence of bubble. For single-phase flow, the ratio of pressure integral length scale to the velocity integral length scale (Lp/L) was found to be a constant of about 0.67, and the pressure Taylor microscale (λp) was approximately 0.79 ± 0.03 of the velocity Taylor microscale (λ) for a low Reynolds number. The scaling ratio based on the single-phase experimental results were compared with existing theory and DNS results and found to accord well; however, these ratios deviate from theoretical values for two-phase flow. Also, the energy dissipation rate was evaluated based on the pressure spectrum and found the over-predicted (~ 31%) values relative to those calculated from the velocity spectrum.]]> Fri 19 Jun 2020 14:48:42 AEST ]]> Hydrodynamics of a novel 3D printed structured packing-SpiroPak https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:39744 Fri 17 Jun 2022 18:27:07 AEST ]]> CFD-DEM investigation of the interaction between a particle swarm and a stationary bubble: particle-bubble collision efficiency https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:38218 p ≤ 0.25) and bubble Reynolds numbers (50 ≤ Reb ≤ 200). It was observed that the collision efficiency decreased with increasing the solid fraction until achieving a plateau value. This plateau was attributed to the increase in the lateral expansion of the swarm and particle velocities. The former effect decreased the collision by interception, while the latter increased the inertial effects. However, when the bubble Reynolds number increased, the particle swarm did not have enough time to accelerate or deform before reaching the bubble, and thus, the collision efficiency became insensitive to the solid fraction. The modelling approach presented provides a framework to manage the complexity of particle-bubble interactions in a multiple-particle system.]]> Fri 13 Aug 2021 15:34:48 AEST ]]> Bubble movement in a rotating eddy: the implications for particle-bubble detachment https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:32196 Fri 11 May 2018 13:24:14 AEST ]]> Bubble-particle detachment in a turbulent vortex II-computational methods https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:32197 Fri 11 May 2018 13:24:11 AEST ]]> Bed hydrodynamics of a new three-phase fluidized bed flotation column with steel ball particles https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:51502 Fri 08 Sep 2023 11:56:58 AEST ]]> Segregation of a Phosphorus Rich Phase During Differential Solidification of BOF Slag https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:49782 Fri 02 Jun 2023 17:28:43 AEST ]]>