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Articles 1 - 11 of 11
Full-Text Articles in Social and Behavioral Sciences
Radial Consolidation Model Incorporating The Effects Of Vacuum Preloading And Non-Darcian Flow, Kourosh Kianfar, Buddhima Indraratna, Cholachat Rujikiatkamjorn
Radial Consolidation Model Incorporating The Effects Of Vacuum Preloading And Non-Darcian Flow, Kourosh Kianfar, Buddhima Indraratna, Cholachat Rujikiatkamjorn
Faculty of Engineering and Information Sciences - Papers: Part A
A modified 150 mm Rowe cell equipped with pore water pressure measurement was used to capture the flow relationship during vacuum-assisted radial consolidation. Based on the measured data, a radial consolidation model incorporating the effects of vacuum preloading is proposed, based on a non-linear relationship between the flow velocity and hydraulic gradient. The predictions of the proposed consolidation model are then compared with the predictions based on Hansbo’s Darcian and non- Darcian models. The agreement between the proposed model and the measured data is shown, and the advantages of the proposed model compared with the existing models are discussed. An …
Flow Of Molten Slag Through Coke Channels, Hazem Labib George, Brian Joseph Monaghan, Raymond James Longbottom, Sheng Jason Chew, Peter Richard Austin
Flow Of Molten Slag Through Coke Channels, Hazem Labib George, Brian Joseph Monaghan, Raymond James Longbottom, Sheng Jason Chew, Peter Richard Austin
Faculty of Engineering and Information Sciences - Papers: Part A
In the lower zone of the iron making blast furnace, liquid iron and slag descend counter-current to reducing gases through a packed bed of coke. The characteristics of the flow of these liquids and their holdup influence product quality and furnace operation. The present study aimed to establish the criteria for the passage of slag through the narrow pore necks that form between coke particles. The flow of slag through coke pore necks has been simulated using an experimental technique that assesses slag flow from a funnel entering a narrow channel of known diameter. Synthetic coke was mainly used to …
A Three-Phase Power Flow Approach For Integrated 3-Wire Mv And 4-Wire Multigrounded Lv Networks With Rooftop Solar Pv, Md J E Alam, K M. Muttaqi, Darmawan Sutanto
A Three-Phase Power Flow Approach For Integrated 3-Wire Mv And 4-Wire Multigrounded Lv Networks With Rooftop Solar Pv, Md J E Alam, K M. Muttaqi, Darmawan Sutanto
Faculty of Engineering and Information Sciences - Papers: Part A
With increasing level of rooftop solar photovoltaic (PV) penetration into low voltage (LV) distribution networks, analysis with realistic network models is necessary for adequate capturing of network behavior. Traditional three-phase 3-wire power flow approach lacks the capability of exact analysis of 4-wire multigrounded LV networks due to the approximation of merging the neutral wire admittance into the phase wire admittances. Such an approximation may not be desirable when neutral wire and grounding effects need to be assessed, especially in the presence of single-phase solar power injection that may cause a significant level of network unbalance. This paper proposes a three-phase …
A Biological Process Subject To Noncompetitive Substrate Inhibition In A Generalized Flow Reactor, M I. Nelson, T Nicholls, N Hamzah
A Biological Process Subject To Noncompetitive Substrate Inhibition In A Generalized Flow Reactor, M I. Nelson, T Nicholls, N Hamzah
Faculty of Engineering and Information Sciences - Papers: Part A
We analyse the steady-state operation of a continuous flow bioreactor in which the biochemical reaction is governed by noncompetitive substrate inhibition (Andrews kinetics). A generalized reactor model is used in which the well-stirred bioreactor and the idealized membrane bioreactor are special cases. As generic properties of systems subject to substrate inhibition have been obtained by other authors, we discuss reaction engineering features specific to Andrews kinetics.
Adaptive Stochastic Energy Flow Balancing In Smart Grid, Hassan Shirzeh, Fazel Naghdy, Philip Ciufo, Montserrat Ros
Adaptive Stochastic Energy Flow Balancing In Smart Grid, Hassan Shirzeh, Fazel Naghdy, Philip Ciufo, Montserrat Ros
Faculty of Engineering and Information Sciences - Papers: Part A
A smart grid can be considered as an unstructured network of distributed interacting nodes represented by renewable energy sources, storage and loads. The nodes emerge or disappear in a stochastic manner due to the intermittent nature of natural sources such as wind speed and solar irradiation. Prediction and stochastic modelling of electrical energy flow is a critical characteristic in such a network to achieve load balancing and/or peak shaving in order to minimise the fluctuation between off peak and peak demand by power consumers. Before contributing energy to the network, a node acquires information about other nodes in the grid …
Modelling Fire Line Merging Using Plane Curature Flow, J J. Sharples, I N. Towers, G Wheeler, Valentina-Mira Wheeler, J A. Mccoy
Modelling Fire Line Merging Using Plane Curature Flow, J J. Sharples, I N. Towers, G Wheeler, Valentina-Mira Wheeler, J A. Mccoy
Faculty of Engineering and Information Sciences - Papers: Part A
The merging of two lines of fire is a relatively common occurrence in landscape fire events. For example, it can arise through the coalescence of two wildfires or when a prescribed fire meets a wildfire as part of suppression efforts. When two fires approach one another, the effects of convective and radiative heat transfer are compounded and high rates of spread can arise as a result. This is particularly the case when two oblique lines of fire meet at some acute angle - the point of intersection on the newly merged fire can advance rapidly. This case was investigated recently …
The Simulation Of Particle Flow Mechanisms In Dustiness Testers, Sathaphon Wangchai, David B. Hastie, Peter W. Wypych
The Simulation Of Particle Flow Mechanisms In Dustiness Testers, Sathaphon Wangchai, David B. Hastie, Peter W. Wypych
Faculty of Engineering and Information Sciences - Papers: Part A
Dust generation is a common result of many bulk handling and mining applications and has potentially serious consequences to the surrounding environment as well as workers and nearby community. Companies need to know how much and what type of dust is being generated so they can find ways to reduce this dust. Dustiness testers can be used for this purpose. This paper investigates the rotating drum testers used for dustiness testing of bulk solids and the subsequent discrete element method (DEM) simulation of the particle mechanisms. Preliminary comparisons of the rotating drum designs were undertaken using particle/bulk parameters of a …
Determining The Geometry Of Mass-Flow Bins - Some Important Considerations, Peter Arnold
Determining The Geometry Of Mass-Flow Bins - Some Important Considerations, Peter Arnold
Faculty of Engineering and Information Sciences - Papers: Part A
It has taken some time to obtain general acceptance but in recent times, at least in Australia, competent designers of mass-flow bins use techniques based on the traditional concepts of Jenike to determine the appropriate geometry for mass-flow hoppers to handle bulk solids reliably. While the traditional Jenike design concepts may appear straightforward experience dictates that some important considerations need to be exercised during the design process, especially when handling the more difficult bulk solids, to ensure that the final bin construction performs to expectations. Some of the important considerations that this paper will highlight include: • Appropriate bulk solids …
Fully Nonlinear Curvature Flow Of Axially Symmetric Hypersurfaces With Boundary Conditions, James Mccoy, Fatemah Mofarreh, Graham Williams
Fully Nonlinear Curvature Flow Of Axially Symmetric Hypersurfaces With Boundary Conditions, James Mccoy, Fatemah Mofarreh, Graham Williams
Faculty of Engineering and Information Sciences - Papers: Part A
Inspired by earlier results on the quasilinear mean curvature flow, and recent investigations of fully nonlinear curvature flow of closed hypersurfaces which are not convex, we consider contraction of axially symmetric hypersurfaces by convex, degree-one homogeneous fully nonlinear functions of curvature. With a natural class of Neumann boundary conditions, we show that evolving hypersurfaces exist for a finite maximal time. The maximal time is characterised by a curvature singularity at either boundary. Some results continue to hold in the cases of mixed Neumann-Dirichlet boundary conditions and more general curvature-dependent speeds.
On The Curve Diffusion Flow Of Closed Plane Curves, Glen Wheeler
On The Curve Diffusion Flow Of Closed Plane Curves, Glen Wheeler
Faculty of Engineering and Information Sciences - Papers: Part A
In this paper, we consider the steepest descent H−1-gradient flow of the length functional for immersed plane curves, known as the curve diffusion flow. It is known that under this flow there exist both initially immersed curves that develop at least one singularity in finite time and initially embedded curves that self-intersect in finite time. We prove that under the flow closed curves with initial data close to a round circle in the sense of normalised L2 oscillation of curvature exist for all time and converge exponentially fast to a round circle. This implies that for a sufficiently large ‘waiting …
An Experimental And Simulated Investigation Of Particle Flow Through A Conveyor Rock Box, David B. Hastie
An Experimental And Simulated Investigation Of Particle Flow Through A Conveyor Rock Box, David B. Hastie
Faculty of Engineering and Information Sciences - Papers: Part A
The use of rock boxes within conveyor transfers is not new, however, there is little published in the literature to aid in the design and implementation of rock boxes; instead mainly relying on prior knowledge and rules-of-thumb. A benefit of a rock box over other transfer types (e.g. soft loading chutes and impact plates) is their ability to capture material in such a way that it is only the initial feed of material which contacts chute walls or liners, with build-up of material creating a dominance of particle-particle interactions, thus reducing wear of the system and hence cost. This paper …