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Articles 2221 - 2250 of 2936
Full-Text Articles in Social and Behavioral Sciences
Achieving Supply Chain Integration Using Rfid Technology: The Case Of Emerging Intelligent B-To-B E-Commerce Processes In A Living Laboratory, Samuel Fosso Wamba
Achieving Supply Chain Integration Using Rfid Technology: The Case Of Emerging Intelligent B-To-B E-Commerce Processes In A Living Laboratory, Samuel Fosso Wamba
Faculty of Engineering and Information Sciences - Papers: Part A
Purpose: Despite the high operational and strategic potentials of RFID technology, very little studies have been conducted about its role as enabler of supply chain integration to achieve high-level operational efficiency. Therefore, this study is an initial effort towards bridging the existing knowledge gap in the literature. Design/methodology: This exploratory research was conducted in one retail supply chain. A multi-method approach combining a longitudinal real-life case study and a methodology integrating several steps, including a “Living Laboratory” strategy was used and involved all members of a product line to analyze in terms of their contributing activities and their interface with …
Rietveld Analysis Of The Effect Of Annealing Atmosphere On Phase Evolution Of Nanocrystalline Tio 2 Powders, M Salari, M Rezaee, A T. Chidembo, Konstantin Konstantinov, Hua-Kun Liu
Rietveld Analysis Of The Effect Of Annealing Atmosphere On Phase Evolution Of Nanocrystalline Tio 2 Powders, M Salari, M Rezaee, A T. Chidembo, Konstantin Konstantinov, Hua-Kun Liu
Faculty of Engineering and Information Sciences - Papers: Part A
The struclUral evolution of nanocrystaUine Ti02 was studied by X-ray diffraction (XRD) and the Rietveld refinement method (RRM). Ti02 powders were prepared by the sol-gel technique. Post annealing of as·synthesized powders in the temperature range from 500°C to 600 °C under air and argon atmospheres led to the formation of Ti02 nanoparticles with mean crystallite size in the range of 37-165 nm. based on the Rietveld refinement results. It was found that the phase structure, composition, and crystallite size of the resulting particles were dependent on not only the annealing temperature, but also the annealing atmosphere. Rietveld refinement of the …
Discussion Of "Depth-Averaged Shear Stress And Velocity In Open-Channel Flows" By Shu-Qing Yang, M Sterling, Xiannan Tang
Discussion Of "Depth-Averaged Shear Stress And Velocity In Open-Channel Flows" By Shu-Qing Yang, M Sterling, Xiannan Tang
Faculty of Engineering and Information Sciences - Papers: Part A
The discussers thank the author for writing an informative and thought-provoking paper. Predicting the lateral distribution of boundary shear stress in open-channel flows is an intractable issue, and any theoretical work in this area is to be welcomed. The purpose of this discussion is twofold: first, to compare the analysis developed by the author to experimental data; and second, to seek clarification on several areas of potential confusion, which may be due to typographical errors.
Flicker Propagation Analysis In Distribution Networks With Embedded Generation, D Perera, L Meegahapola, S Perera, P Ciufo
Flicker Propagation Analysis In Distribution Networks With Embedded Generation, D Perera, L Meegahapola, S Perera, P Ciufo
Faculty of Engineering and Information Sciences - Papers: Part A
Embedded generators such as wind generators can produce observable voltage fluctuations during variable wind conditions hence flicker. The flicker produced by such intermittent and fluctuating generating sources can propagate to other parts of the distribution network while creating power quality issues in distribution feeders. This study presents a flicker emission analysis for a doubly-fed induction generator (DFIG) based wind farm and investigate the pertinent factors which influence flicker propagation and attenuation in distribution feeders. Study has shown that voltage fluctuations are significantly influenced by the attenuation characteristics of various load types (i.e. constant power, impedance and current loads) connected to …
A Synthesis Of A Knowledge Management Framework For Sports Event Management, Azizul Rahman Abdul Ghaffar, Ghassan Beydoun, Jun Shen, Will Tibben, Dongming Xu
A Synthesis Of A Knowledge Management Framework For Sports Event Management, Azizul Rahman Abdul Ghaffar, Ghassan Beydoun, Jun Shen, Will Tibben, Dongming Xu
Faculty of Engineering and Information Sciences - Papers: Part A
Due to rapid social development in Asia, sports events have grown larger and many new countries are also hosting them for their first time. In addition to required increase in expenditures and more efficient management, various instances of inadequate planning highlighted the needs for more effective and better sustainable structures to support knowledge transfer between organizers, from one event to the next. The research presented in this paper aims to facilitate the deployment of systematic knowledge management practices to sports event management, to enable sustainable planning. The research in this paper synthesizes is carried out on the Malaysian Games as …
Evolution Of Internal Crack In Bcc Fe Under Compressive Loading, Dongbin Wei, Zhengyi Jiang, Jingtao Han
Evolution Of Internal Crack In Bcc Fe Under Compressive Loading, Dongbin Wei, Zhengyi Jiang, Jingtao Han
Faculty of Engineering and Information Sciences - Papers: Part A
A molecular dynamics model has been developed to investigate the evolution of the internal crack of nano scale during heating or compressive loading in BCC Fe. The initial configuration does not contain any pre-existing dislocations. In the case of heating, temperature shows a significant effect on crack evolution and the critical temperature at which the crack healing becomes possible is 673 K. In the case of compressive loading, the crack can be healed at 40 K at a load- ing rate 0.025 × 1018 Pa·m1/2/s in 6 × 10−12 s. The diffusion of Fe atoms into the crack area results …
A Methodology For Bridge Condition Evaluation, Maria Rashidi, Peter Gibson
A Methodology For Bridge Condition Evaluation, Maria Rashidi, Peter Gibson
Faculty of Engineering and Information Sciences - Papers: Part A
Due to the substantial role of bridges in transportation networks and in accordance with the limited funding for bridge management, remediation strategies have to be prioritised. A conservative bridge assessment will result in unnecessary actions, such as costly bridge strengthening or repairs. On the other hand, any bridge maintenance negligence and delayed actions may lead to heavy future costs or degraded assets. The accuracy of decisions developed by any manager or bridge engineer relies on the accuracy of the bridge condition assessment which emanates from visual inspection. Many bridge rating systems are based on a very subjective procedure and are …
Microdosimetry For Targeted Alpha Therapy Of Cancer, Chen-Yu Huang, Susanna Guatelli, Brad Oborn, Barry J. Allen
Microdosimetry For Targeted Alpha Therapy Of Cancer, Chen-Yu Huang, Susanna Guatelli, Brad Oborn, Barry J. Allen
Faculty of Engineering and Information Sciences - Papers: Part A
Targeted alpha therapy (TAT) has the advantage of delivering therapeutic doses to individual cancer cells while reducing the dose to normal tissues. TAT applications relate to hematologic malignancies and now extend to solid tumors. Results from several clinical trials have shown efficacy with limited toxicity. However, the dosimetry for the labeled alpha particle is challenging because of the heterogeneous antigen expression among cancer cells and the nature of short-range, high-LET alpha radiation. This paper demonstrates that it is inappropriate to investigate the therapeutic efficacy of TAT bymacrodosimetry. The objective of this work is to review the microdosimetry of TAT as …
Delta Extraction Optimization For View Maintenance In A Limited Collaborative Environment, Zheng Lu, Haijun Liu, Peter Hyland
Delta Extraction Optimization For View Maintenance In A Limited Collaborative Environment, Zheng Lu, Haijun Liu, Peter Hyland
Faculty of Engineering and Information Sciences - Papers: Part A
This work considers maintaining materialized view in a distributed environment where the collaboration from highly autonomous operational database management systems is limited to granting read only access on a set of selected relational tables. In addition, due to possibly large volumes of remote source data involved in the view maintenance process, and consequently enormous overhead associated with data transfer, efficiency issues must been taken into the consideration. This proposal is based on the observation that usually, there is a large amount of static data in relational tables. It is proposed to use some statistical techniques at data warehouse system to …
Purely Infinite C-Algebras Arising From Crossed Products, Mikael Rordam, Adam Sierakowski
Purely Infinite C-Algebras Arising From Crossed Products, Mikael Rordam, Adam Sierakowski
Faculty of Engineering and Information Sciences - Papers: Part A
We study conditions that will ensure that a crossed product of a C-algebra by a discrete exact group is purely infinite (simple or non-simple). We are particularly interested in the case of a discrete non-amenable exact group acting on a commutative C-algebra, where our sufficient conditions can be phrased in terms of paradoxicality of subsets of the spectrum of the abelian C-algebra. As an application of our results we show that every discrete countable non-amenable exact group admits a free amenable minimal action on the Cantor set such that the corresponding crossed product C-algebra is a Kirchberg algebra in the …
Multiuser Diversity With Capture In Ofdma Systems With Clustered Feedback, Hang Li, Qinghua Guo, Licai Fang, Defeng (David) Huang
Multiuser Diversity With Capture In Ofdma Systems With Clustered Feedback, Hang Li, Qinghua Guo, Licai Fang, Defeng (David) Huang
Faculty of Engineering and Information Sciences - Papers: Part A
In this paper, we propose a cluster-based feedback protocol for multiuser orthogonal frequency-division multipleaccess (OFDMA) systems, where the capture effect is employed in each cluster to reduce the enormous system overhead induced by polling channel-state information. Then, we analyze the system throughput performance of the proposed feedback protocol. Compared with the full feedback scheme in the literature, numerical simulations show that the proposed protocol with clustered feedback in OFDMA systems achieves higher system throughput by employing the capture effect with limited feedback overhead, when the number of users is reasonably large. Moreover, compared with our previous protocol of Multiuser Diversity …
Fairness And Capacity Analysis Of Opportunistic Feedback Protocol With Proportional Fair Or Maximum Throughput Scheduling, Hang Li, Qinghua Guo, Licai Fang, Defeng (David) Huang
Fairness And Capacity Analysis Of Opportunistic Feedback Protocol With Proportional Fair Or Maximum Throughput Scheduling, Hang Li, Qinghua Guo, Licai Fang, Defeng (David) Huang
Faculty of Engineering and Information Sciences - Papers: Part A
An opportunistic feedback protocol with maximum throughput (MT) scheduling has been proposed in the literature to achieve multiuser diversity for the downlink transmission of a wireless system, and its system capacity has been analyzed with the assumption that the received signal-to-noise ratios (SNRs) for the users are independent and identically distributed. In this paper, fairness and capacity performances of the opportunistic feedback protocol are analyzed for SNRs with independent but not necessarily identical distributions. In addition to MT scheduling, we also analyze the fairness and capacity performances for proportional fair (PF) scheduling. Compared with MT scheduling, numerical results demonstrate that …
An Inventory Of Landslides Within The Sydney Basin To Aid The Development Of A Refined Susceptibility Zoning, Phillip N. Flentje, David Stirling, Darshika Palamakumbure
An Inventory Of Landslides Within The Sydney Basin To Aid The Development Of A Refined Susceptibility Zoning, Phillip N. Flentje, David Stirling, Darshika Palamakumbure
Faculty of Engineering and Information Sciences - Papers: Part A
The University of Wollongong GIS-based Landslide Inventory is currently being expanded from its Illawarra centric coverage (664 landslides) to include the 31,000km2 geological extent of the Sydney Basin and ultimately all of New South Wales (hereafter this inventory will be referred to as the NSW LI). In 1998, this inventory stood at 319 sites of instability and in 2010 it had grown to 616 landslides. The population of the Sydney Basin in 2006 was approximately 4.9 million people, representing approximately one quarter of the population of Australia. When this current phase of expansion is completed, the NSW LI will include …
Synthetic Populations: Review Of The Different Approaches, Johan Barthelemy, Eric Cornelis
Synthetic Populations: Review Of The Different Approaches, Johan Barthelemy, Eric Cornelis
Faculty of Engineering and Information Sciences - Papers: Part A
Microsimulations may involve a large number of agents. It is then practically impossible or too expensive to obtain a fully and complete disaggregated data set about these agents of interest. Moreover, if such a dataset was available, its use would be potentially problematic in view of stringent privacy laws. To address this problem one may build an articial population starting from known aggregate data. Most of the known generation methods are explained in this paper. Their advantages and limitations are discussed and references are given for further details.
Nonlinear Optical Beams In Bounded Nematic Liquid Crystal Cells, Antonmaria Minzoni, Luke W. Sciberras, Noel Prof Noel F Smyth, Annette L. Worthy
Nonlinear Optical Beams In Bounded Nematic Liquid Crystal Cells, Antonmaria Minzoni, Luke W. Sciberras, Noel Prof Noel F Smyth, Annette L. Worthy
Faculty of Engineering and Information Sciences - Papers: Part A
Stable nonlinear beams, both solitary waves (nematicons) and optical vortices, can form in a nematic liquid crystal due to a balance between the nonlinear, nonlocal response of the nematic and the diffractive spreading of the light beam. The `huge' nonlinearity of a nematic liquid crystal makes it ideal for the experimental development of photonic devices as nonlinear effects occur over millimetre distances. In this work, a simple and fast method to analyse the trajectory of a nonlinear beam within a finite liquid crystal cell, based on a classical method not explored in this context, the method of images, is developed. …
Semi-Analytical Solutions For Cubic Autocatalytic Reaction-Diffusion Equations; The Effect Of A Precursor Chemical, Muteb Alharthi, Timothy Marchant, Mark Nelson
Semi-Analytical Solutions For Cubic Autocatalytic Reaction-Diffusion Equations; The Effect Of A Precursor Chemical, Muteb Alharthi, Timothy Marchant, Mark Nelson
Faculty of Engineering and Information Sciences - Papers: Part A
Semi-analytical solutions for a cubic autocatalytic reaction, with linear decay and a precursor chemical, are considered. The model is coupled with diffusion and considered in a one-dimensional reactor. In this model the reactant is supplied by two mechanisms, diffusion via the cell boundaries and decay of an abundant precursor chemical present in the reactor. The Galerkin method is used to approximate the spatial structure of the reactant and autocatalyst concentrations in the reactor. Ordinary differential equations are then obtained as an approximation to the governing partial differential equations and analyzed to obtain semi-analytical results for the reaction-diffusion cell. Singularity theory …
Investigation Of The Effects Of Pipe Wall Roughness And Pipe Diameter On The Decompression Wave Speed In Natural Gas Pipelines, Cheng Lu, Guillaume Michal, Alhoush Elshahomi, Ajit R. Godbole, Phillip Venton, K K. Botros, Leigh Fletcher, B Rothwell
Investigation Of The Effects Of Pipe Wall Roughness And Pipe Diameter On The Decompression Wave Speed In Natural Gas Pipelines, Cheng Lu, Guillaume Michal, Alhoush Elshahomi, Ajit R. Godbole, Phillip Venton, K K. Botros, Leigh Fletcher, B Rothwell
Faculty of Engineering and Information Sciences - Papers: Part A
The shock tube experimental results have shown clearly that the decompression wave was slowed down in a pipe with a rough inner surface relative to that in a smooth pipe under comparable conditions. In the present paper a one-dimensional dynamic simulation model, named EPDECOM, was developed to investigate the effects of pipe wall roughness and pipe diameter on the decompression wave speed. Comparison with experimental results showed that the inclusion of frictional effects led to a better prediction than that of the widely used model implemented in GASDECOM. EPDECOM simulation results showed that the effect of roughness on the decompression …
Comparing The Formability Of Aisi 304 And Aisi 202 Stainless Steel, Madeleine Du Toit, Herman G. Steyn
Comparing The Formability Of Aisi 304 And Aisi 202 Stainless Steel, Madeleine Du Toit, Herman G. Steyn
Faculty of Engineering and Information Sciences - Papers: Part A
The formability of AISI 202 austenitic stainless steel was compared with that of type AISI 304 stainless steel. Type 202 is a low-nickel austenitic stainless steel alloyed with manganese and nitrogen. In this study, the formability of the two grades was examined using Erichsen cupping tests and room temperature uniaxial tensile tests performed at various angles to the rolling direction. AISI 202 appears to work-harden at a slightly higher rate than AISI 304, even though the austenite in type 202 is more stable than that in 304 with respect to the formation of deformation-induced a¢ martensite. Although both grades are …
The Sensitivity Of Particle Parameters In Discrete Element Modelling Of Belt Conveyor Transfers, David B. Hastie, Peter W. Wypych
The Sensitivity Of Particle Parameters In Discrete Element Modelling Of Belt Conveyor Transfers, David B. Hastie, Peter W. Wypych
Faculty of Engineering and Information Sciences - Papers: Part A
As discrete element modelling (DEM) becomes more widely used as a design tool, its suitability to modelling belt conveyor applications including conveyor transfers and conveyor trajectories is becoming more recognised. The accuracy of the data inputted for both the system geometry and particle perspective are vital if the outputs obtained from DEM simulations are to be considered valid. Bench-scale testing can readily obtain a range of particle parameters, however, there are others that can be more difficult to determine. This paper focuses on two such parameters; coefficient of rolling friction and shear modulus. A series of sensitivity analyses have been …
Reducing Cogging Force In A Cage-Secondary Linear Induction Motor (Lim) By One-Side Shifting, Mochammad Rusli
Reducing Cogging Force In A Cage-Secondary Linear Induction Motor (Lim) By One-Side Shifting, Mochammad Rusli
Faculty of Engineering and Information Sciences - Papers: Part A
High precision linear machining tools is one of interesting research field in related to high qualitative products which is also becoming one of competitive factor. The movement precision can be affected by existence of ripple force, unpredicted external load and frictional force. The existence of cogging force is the one limited factor of the linear precision. The reduction of cogging force of its linear movement precision of machining tools using rotary motor drive can be obtained by the skewed rotor or implement the feedback control system. Many researchers have conducted the reduction of cogging torque of its machining tools drive …
Analytical Model For Bar-End Cover Separation Failure In Rc Beams Strengthened With Near-Surface Mounted Frp, S S. Zhang, J G. Teng, J F. Chen
Analytical Model For Bar-End Cover Separation Failure In Rc Beams Strengthened With Near-Surface Mounted Frp, S S. Zhang, J G. Teng, J F. Chen
Faculty of Engineering and Information Sciences - Papers: Part A
The flexural performance of RC beams can be improved using the near-surface mounted (NSM) FRP strengthening technique. A likely failure mode of such FRP-strengthened RC beams is bar-end cover separation which involves the detachment of the NSM FRP reinforcement together with the concrete cover along the level of the steel tension reinforcement. This paper presents a new analytical strength model for this failure mode. The proposed strength model and two existing strength models for this failure mode are compared with test results to demonstrate the superior performance of the new analytical model.
Design Optimization And Comparative Analysis Of Silicon-Nanowire-Based Couplers, Hongqiang Li, Xiaye Dong, Enbang Li, Zhihui Liu, Yaoting Bai
Design Optimization And Comparative Analysis Of Silicon-Nanowire-Based Couplers, Hongqiang Li, Xiaye Dong, Enbang Li, Zhihui Liu, Yaoting Bai
Faculty of Engineering and Information Sciences - Papers: Part A
Three kinds of highly compact 2 x 2 couplers based on silicon nanowire are designed and optimized for the array waveguide grating (AWG) demodulation integration microsystem in this paper. These couplers are directional (X) coupler, cross gap coupler (CGC), and multimode interface (MMI) coupler. The couplers are simulated using the beam propagation method. The distance between the input/output waveguides is set to 10 μm considering the test of a single device in the following work. The total footprint of X coupler is 10 μmx 300 μm. The length of parallel film waveguide is 1 μm. After optimization, the minimum excess …
A Zero-Sum Competitive Multi-Player Game, Ivan W. Guo, Marek Rutkowski
A Zero-Sum Competitive Multi-Player Game, Ivan W. Guo, Marek Rutkowski
Faculty of Engineering and Information Sciences - Papers: Part A
A single period, zero-sum, multi-player game is constructed. Each player can either exit the game for a fixed payoff or stay and split the remaining payoff with the other non-exiting players. The emphasis is put on the rivalrous nature of the payoffs, meaning that the sum of all payoffs is fixed, but the exact allocation is based on the players' decisions. The value at which Nash and optimal equilibria are attained is shown to be unique and it is constructed explicitly.
Development Of Sipm-Based Scintillator Tile Detectors For A Multi-Layer Fast Neutron Tracker, R Preston, J Jakubek, D Prokopovich, J Uher
Development Of Sipm-Based Scintillator Tile Detectors For A Multi-Layer Fast Neutron Tracker, R Preston, J Jakubek, D Prokopovich, J Uher
Faculty of Engineering and Information Sciences - Papers: Part A
We are developing thin tile scintillator detectors with silicon photomultiplier (SiPM) readout for use in a multi-layer fast-neutron tracker. The tracker is based on interleaved Timepix and plastic scintillator layers. The thin 15 x 15 x 2 mm plastic scintillators require suitable optical readout in order to detect and measure the energy lost by energetic protons that have been recoiled by fast neutrons. Our first prototype used dual SiPMs, coupled to opposite edges of the scintillator tile using light-guides. An alternative readout geometry was designed in an effort to increase the fraction of scintillation light detected by the SiPMs. The …
The Explanatory Role Of Computation In Cognitive Science, Nir Fresco
The Explanatory Role Of Computation In Cognitive Science, Nir Fresco
Faculty of Engineering and Information Sciences - Papers: Part A
Which notion of computation (if any) is essential for explaining cognition? Five answers to this question are discussed in the paper. (1) The classicist answer: symbolic (digital) computation is required for explaining cognition; (2) The broad digital computationalist answer: digital computation broadly construed is required for explaining cognition; (3) The connectionist answer: subsymbolic computation is required for explaining cognition; (4) The computational neuroscientist answer: neural computation (that, strictly, is neither digital nor analogue) is required for explaining cognition; (5) The extreme dynamicist answer: computation is not required for explaining cognition. The first four answers are only accurate to a first …
Momentum Balance Method And Estimation Of Boundary Shear Stress Distribution, Shu-Qing Yang, Nadeesha Chamini Dharmasiri, Yu Han
Momentum Balance Method And Estimation Of Boundary Shear Stress Distribution, Shu-Qing Yang, Nadeesha Chamini Dharmasiri, Yu Han
Faculty of Engineering and Information Sciences - Papers: Part A
Determination of local boundary shear stress is an important topic in hydraulic engineering. When attempting to determine this from a very thin boundary region, it is a difficult one because it requires special skills and instruments to treat the measured data. With the advent of new equipment, like the acoustic Doppler velocity profilers (ADVP), all the velocity profiles in the primary flow region can be simultaneously measured, and it is necessary to develop a new method to estimate the boundary shear stress using the primary flow data. This paper presents such a method called the momentum balance method (MBM). A …
Behaviour Of Cfrp Wrapped Square Rc Columns Under Eccentric Loading, Xu Lei, Thong Minh Pham, Muhammad N. Hadi
Behaviour Of Cfrp Wrapped Square Rc Columns Under Eccentric Loading, Xu Lei, Thong Minh Pham, Muhammad N. Hadi
Faculty of Engineering and Information Sciences - Papers: Part A
Fibre Reinforced Polymer (FRP) is an excellent material to strengthen existing structures. However, the confinement efficiency of FRP - confined square columns is relatively low compared to circular columns due to stress concentration at the sharp corners. This paper presents a new techniqu e aimed to maximise the efficiency of FRP confinement for square concrete columns : circularisation using segmental circular concrete covers . Sixteen square reinforced concrete columns were cast. Four were used as a reference group; four were rounded 20 mm at each corner and wrapped with three layers of CFRP simulating the conventional methods; the rest eight …
Isometric Representations Of Totally Ordered Semigroups, M A. Aukhadiev, V H. Tepoyan
Isometric Representations Of Totally Ordered Semigroups, M A. Aukhadiev, V H. Tepoyan
Faculty of Engineering and Information Sciences - Papers: Part A
Let S be a subsemigroup of an abelian torsion-free group G. If S is a positive cone of G, then all C*-algebras generated by faithful isometrical non-unitary representations of S are canon- ically isomorphic. Proved by Murphy, this statement generalized the well-known theorems of Coburn and Douglas. In this note we prove the reverse.
Delivering Zero Carbon Homes In The Uk, Emma Elizabeth Heffernan, Wei Pan, Xi Liang
Delivering Zero Carbon Homes In The Uk, Emma Elizabeth Heffernan, Wei Pan, Xi Liang
Faculty of Engineering and Information Sciences - Papers: Part A
In the UK and internationally, a plethora of voluntary and mandatory energy efficiency standards for new buildings exist, with the common aim of mitigating the impact of new buildings on climate change. However, the take-up of voluntary schemes has been limited and, as a result, many governments have seen the need to introduce mandatory schemes through legislation; from 2016 all new build homes in England and Wales will be required to achieve zero carbon in regulated energy consumption. The international context of voluntary and mandatory building energy efficiency standards is examined through a review of the literature. The review is …
Cold Model Study Of Blast Gas Discharge From The Taphole During The Blast Furnace Hearth Drainage, Qinglin He, Geoffrey M. Evans, Paul Zulli, Francis Tanzil
Cold Model Study Of Blast Gas Discharge From The Taphole During The Blast Furnace Hearth Drainage, Qinglin He, Geoffrey M. Evans, Paul Zulli, Francis Tanzil
Faculty of Engineering and Information Sciences - Papers: Part A
Blast gas discharge from the taphole in the course of the blast furnace hearth drainage was experimentally studied using a packed bed cold model. It was found that gas break-through time was strongly influenced by the furnace operating conditions and coke bed structure. Gas break-through time decreases with (a) increasing draining rate; (b) decreasing slag and iron levels in the hearth; and (c) increasing slag viscosity. It increases with an increase in the coke-free layer depth and coke-free space width. Under certain conditions, the gas-liquid interface in the region directly above the taphole becomes unstable, leading to viscous finger formation …