Browsing Faculty of Engineering by Title
Now showing items 1026-1045 of 1129
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T-tail flutter: potential-flow modelling,experimental validation and flight tests
(Elsevier, 2014)Flutter of T-tail configurations is caused by the aeroelastic coupling between the vertical fin and the horizontal stabiliser. The latter is mounted on the fin instead of the fuselage, and hence the arrangement presents ... -
Tailored surface energy of stainless steel plate coupons to reduce the adhesion of aluminium silicate deposit
(Elsevier, 2016)Fouling in heat exchangers not only reduces heat transfer performance significantly, but also causes considerable pressure drop, resulting in higher pumping requirements. It would be much more desirable if surfaces which ... -
A Target Approximation Intonation Model for Yorùbá TTS
(Interspeech 2014, 2014)A complete intonation model based on quantitative target approximation is described for Yor`ub´a text-to-speech (TTS) synthesis. This model is evaluated analytically and perceptually and compared to a fundamental frequency ... -
Techn-economic assessment of power-to-methane and power-to-syngas business models for sustainable carbon dioxide utilization in coal-to-liquid facilities
(Elsevier Sci Ltd, 2016)The work reported in this paper aimed to evaluate and assess the technical and economic prospects of implementing a renewable-energy-based technology namely power-to-gas (PtG) for sustainable utilization of CO2 emissions ... -
Technical valorisation of spent coffee grounds and food waste using sulphuric acid immobilised on silica
(Taylor & Francis, 2020)Biodiesel from spent coffee grounds and food waste was prepared using sulphuric acid immobilised on silica gel (H2SO4–SiO2) as a catalyst. Reactions were carried out under reflux conditions using 15 mmol methanol. Food ... -
Techno-economic evaluation of a nuclear-assisted coal-to-liquid facility
(Elsevier, 2012)The production of synthetic fuels (synfuels) in Coal-to-Liquid (CTL) facilities has contributed to global warming due to the enormous carbon dioxide (CO2) emission footprint of the process. This corresponds to inefficient ... -
Techno-economic feasibility of a preoxidation process to enhance prereduction of chromite
(SAIMM, 2017)Ferrochrome (FeCr) is vital for the production of stainless and high-alloy ferritic steels, since it is the only source of new Cr units. FeCr production is an energy-intensive process. The pelletized chromite prereduction ... -
Technological evaluation of organic solvent nanofiltration for the recovery of homogeneous hydroformylation catalysts
(Elsevier, 2017)The prevalence of homogeneous catalysts, to produce high value commodities in the surfactant and detergent range by upgrading inter alia syngas and short chain olefins, through metathesis, hydroformylation and hydrogeneration, ... -
Technology assessment of plasma arc reforming for greenhouse gas mitigation: a simulation study applied to a coal to liquids process
(Elsevier, 2016)Coal to liquids processes contribute significantly to coal rich countries like South Africa. However, their sustainability is affected by high greenhouse gas emissions and low carbon productivity. This paper explores the ... -
Temperature profile mapping over a catalytic unit of a hydrogen passive autocatalytic recombiner: an experimental and computational fluid dynamics study
(ACS, 2020)Passive autocatalytic recombiners (PARs) are used for the removal of accidentally released hydrogen inside confined spaces. The high catalyst surface temperature is an important safety issue to be considered in the use of ... -
Tensile properties and microstructural characterization of additive manufactured, investment cast and wrought Ti6Al4V alloy
(IOP, 2019)This paper presents an evaluation of the tensile properties and microstructural characterization of Ti6Al4V alloy manufactured with three different processing routes; traditional wrought processing, investment cast and ... -
Test problems for the verification and validation of the radiation, conduction and convection capabilities of system codes
(ICHMT, 2017)The purpose of the reactor cavity cooling system in a nuclear plant is to remove the heat released by the reactor pressure vessel effectively. The reactor cavity cooling system must be able to operate naturally or passively ... -
Testing of a predictive pole-slip protection algorithm on a real time digital simulator
(IEEE, 2016)Predictive pole-slip protection is not implemented in commercially available protection relays. All pole-slip protection relays on the market will only trip a generator after it has pole-slipped one or more times. A ... -
Testing of briquettes made from Witbank coal fines with polyvinyl alcohol as binder
(EARET, 2018)Approximately 12% of South Africa’s mined coal can be classified as fine coal. Fine coal is primarily formed through mechanical mining methods and can cause blockage in equipment, transportation mechanisms and silos. ... -
Text-based Language Identification of Multilingual Names
(IEEE, 2015)Text-based language identification (T-LID) of isolated words has been shown to be useful for various speech processing tasks, including pronunciation modelling and data categorisation. When the words to be categorised ... -
The industrial engineering identity: from historic skills to modern values, duties, and role
(Stellenbosch Univ, 2016)Over the past 100 years, engineering has sub-divided into tens of disciplines in an attempt to deal with the different problems arising from the wide spectrum of human endeavours. One particular field, however, arose from ... -
The influence of timed coolant injection on compressor efficiency
(Elsevier, 2016)Timed injection of coolant during the onset of the compression stroke in a reciprocating compressor aimed at achieving quasi-isobaric conditions during the initial part of the compression stroke was investigated as a means ... -
The need for a comprehensive energy management information system for industries
(Stellenbosch Univ, 2016)Electricity costs in South Africa are increasing rapidly, and the funding hurdle rates for energy conservation incentives are decreasing. Therefore, with rising international competition and increasing operational costs, ... -
Theoretical limit of reversible hydrogen storage capacity for pristine and oxygen-doped boron nitride
(Elsevier, 2016)To achieve higher hydrogen storage capacity than that of compressed gas vessels, new advanced materials must be developed. Among the most promising are two-dimensional layered nanomaterials, such as graphene and boron ... -
Thermal and efficiency analysis of a single phase induction motor with Peltier devices
(Emerald, 2012)We present the results obtained from the thermal and efficiency analysis of a single phase induction motor with Peltier devices. A single phase induction motor is completely simulated in SolidWorks® and Matlab® Simulink®. ...
