https://nova.newcastle.edu.au/vital/access/ /manager/Index en-au 5 https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:40509 Wed 27 Jul 2022 15:08:43 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:3236 Wed 11 Apr 2018 16:40:52 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:1455 Wed 11 Apr 2018 15:45:36 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:3231 Wed 11 Apr 2018 15:05:15 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:4810 Wed 11 Apr 2018 14:15:44 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:4535 Wed 11 Apr 2018 13:47:31 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:3757 Wed 11 Apr 2018 11:57:45 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:4265 Wed 11 Apr 2018 11:02:22 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:14986 Wed 11 Apr 2018 10:00:52 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:31095 Tue 27 Aug 2024 19:42:36 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:44968 Tue 25 Oct 2022 15:58:26 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:19130 Tue 24 Aug 2021 14:29:11 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:28966 Thu 26 Jul 2018 16:23:04 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:32961 Thu 16 Aug 2018 14:31:46 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:6979 Sat 24 Mar 2018 10:46:31 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:2913 Sat 24 Mar 2018 08:27:58 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:10239 Sat 24 Mar 2018 08:13:03 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:16173 Sat 24 Mar 2018 07:54:06 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:5191 Sat 24 Mar 2018 07:47:48 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:5498 Sat 24 Mar 2018 07:47:01 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:5255 Sat 24 Mar 2018 07:46:25 AEDT ]]> 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 (Re_p>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 ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:25638 Sat 24 Mar 2018 07:28:10 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:26431 Sat 24 Mar 2018 07:27:29 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:26545 Sat 24 Mar 2018 07:26:09 AEDT ]]> 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 ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:30519 Sat 24 Mar 2018 07:25:04 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:28773 b = 6j_g/D_b. However, for a given bubble diameter, D_b, the imposed gas flux, j_g, is constrained in conventional flotation by the need to operate with a distinct froth and bubbly-pulp zone to ensure effective separation. An excessive j_g will result in flooding and ineffective separation as the overflow begins to resemble the underflow. The bubble surface flux, S_b, is limited to 30 to 60 s^-1 in conventional flotation [1]. This study is concerned with enhancing the kinetics of flotation by accommodating extreme feed and gas fluxes. Extreme bubble surface fluxes, up to 600 s^-1, were produced. This was achieved by incorporating an arrangement of parallel inclined channels below the main vertical chamber. This novel arrangement enhanced the bubble-liquid segregation, preventing the entrainment of bubbles to the underflow.]]> Sat 24 Mar 2018 07:23:45 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:22907 Sat 24 Mar 2018 07:09:32 AEDT ]]> 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.]]> Sat 06 Jul 2024 14:56:03 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50782 Mon 29 Jan 2024 18:40:29 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:39152 2·6H₂O) by using a nucleating agent - flake graphite. A super absorbent polymer (SAP) was also used as a thickener to prevent segregation of CaCl₂·6H₂O during phase transition. The combined method of thermogravimetric analysis/differential thermal analysis (TGA-DTA) was firstly proposed to evaluate the segregation of inorganic PCM innovatively. The results showed that using 0.5 wt% flake graphite not only eliminated the supercooling of CaCl₂·6H₂O, but also improved its thermal conductivity for better thermal performance. The results of Fourier-transform infrared spectroscopy (FT-IR) and scanning electron microscope (SEM) demonstrated that the flake graphite did play an important role on the crystallization of CaCl₂·6H₂O. Numerical simulation demonstrated that using modified CaCl₂·6H₂O within walls of buildings in Hong Kong and Changsha are economically feasible with the payback periods of 18.3 years and 8.4 years respectively.]]> Mon 29 Jan 2024 17:51:24 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:21685 Mon 25 Jul 2016 17:58:07 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:26094 Mon 23 Sep 2019 13:38:02 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:44566 Mon 17 Oct 2022 11:30:41 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:54860 Fri 15 Mar 2024 17:14:35 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:49782 Fri 02 Jun 2023 17:28:43 AEST ]]>