Browsing Masters Degrees (Mechanical and Mechatronic Engineering) by Title

Now showing items 164-183 of 251

  • A needle positioning system for percutaneous procedures 

    Garth-Davis, Bryan (Stellenbosch : Stellenbosch University, 2012-12)
    ENGLISH ABSTRACT: In percutaneous procedures, where the surgeon inserts a needle into a target in the patient, it is challenging to access the target at the rst attempt. Repeated needle insertion attempts are highly ...

  • Non-invasive artificial pulse oximetry : development & testing 

    Cloete, Garth (Stellenbosch : Stellenbosch University, 2012-03)
    ENGLISH ABSTRACT: The monitoring of patients in healthcare is of prime importance to ensure their efficient treatment. The monitoring of blood oxygen saturation in tissues affected by diseases or conditions that may ...

  • A novel method of improving EEG signals for BCI classification 

    Burger, Christiaan (Stellenbosch : Stellenbosch University, 2014-12)
    ENGLISH ABSTRACT: Muscular dystrophy, spinal cord injury, or amyotrophic lateral sclerosis (ALS) are injuries and disorders that disrupts the neuromuscular channels of the human body thus prohibiting the brain from ...

  • A numerical analysis of the flow field surrounding a solar chimney power plant 

    Harris, Rhydar Lee (Stellenbosch : University of Stellenbosch, 2004-04)
    ENGLISH ABSTRACT: This study investigated the flow field above a proposed solar chimney power plant, without a cross wind, using a commercial numerical solver in the form of CFX 4-4 by AEA Technology plc. The governing ...

  • Numerical design optimisation for the Karoo Array Telescope 

    Joubert, N. J. D. (Stellenbosch : University of Stellenbosch, 2009-03)
    Although mass minimisation is an important application within structural optimisation, other applications include: (1) concept generation, (2) concept evaluation, (3) design for structural feasibility and (4) data matching. ...

  • A numerical investigation into the heave, sway and roll motions of typical ship like hull sections using RANS numerical methods 

    Henning, H. L. (Stellenbosch : Stellenbosch University, 2011-12)
    ENGLISH ABSTRACT: The hydrodynamic characteristics of three typical ship-like hull sections, in different motions, are numerically investigated using FLUENT, 2009. These simple shapes, namely a v-bottom (triangle) hull, ...

  • A numerical investigation of air-cooled steam condenser performance under windy conditions 

    Owen, Michael Trevor Foxwell (Stellenbosch : University of Stellenbosch, 2010-03)
    ENGLISH ABSTRACT: This study is aimed at the development of an efficient and reliable method of evaluating the performance of an air-cooled steam condenser (ACSC) under windy conditions, using computational fluid dynamics ...

  • Numerical investigation of fan performance in a forced draft air-cooled steam condenser 

    Bredell, J. R. (Johann Richard) (Stellenbosch : Stellenbosch University, 2005-12)
    ENGLISH ABSTRACT: Forced draft air-cooled steam condensers (ACSCs) consisting of multiple fan units are used in direct cooled power plants to condense steam in a closed steam cycle. Axial flow fans located below an A-frame ...

  • Numerical modeling and experimental investigation of the flow and thermal processes in a motor car vehicle underhood 

    Van Zyl, Josebus Maree (Stellenbosch : University of Stellenbosch, 2006-12)
    The project aimed at numerically modeling the flow and thermal processes occurring in a Volkswagen Citi Golf Chico underhood using computational fluid dynamics (CFD). The motivation for this investigation was to develop ...

  • Numerical modelling of ti6A14V machining : a combinded FEA and unified mechanics of cutting approach 

    Bowes, David Christian (Stellenbosch : Stellenbosch University, 2013-03)
    ENGLISH ABSTRACT: In this study, Ti6Al4V machining is modelled using finite element analysis of orthogonal machining. Orthogonal turning tests are conducted for the verification of FE models in terms of machining forces, ...

  • NVH benchmarking during vehicle development using sound quality metrics 

    Von Gossler, J. (Stellenbosch : University of Stellenbosch, 2007-03)
    Noise, Vibrations and Harshness (NVH) characteristics are becoming ever more significant in today’s vehicle manufacturing industry. Similar to good vibration and harshness characteristics, the perception of a vehicle’s ...

  • Nystagmus and eye reflex sensor 

    Swart, Wayne (Stellenbosch : Stellenbosch University, 2011-12)
    ENGLISH ABSTRACT: Nystagmus is an eye movement pattern that consists of a drifting gaze component, known as the slow phase, followed by a corrective quick phase component. The presence of nystagmus or the lack thereof ...

  • Optimal design of Orthotropic Piezoelectric membranes and plates using particle swarms 

    Joubert, Matthew James Stuart (Stellenbosch : Stellenbosch University, 2014-04)
    ENGLISH ABSTRACT: Over the past 50 years smart materials have made their appearance in many structures. The thermopiezoelectric ceramic is one of these smart materials. When thermal e ects are considered negligible, then ...

  • Optimization of a low speed wind turbine using support vector regression 

    Wise, John Nathaniel (Stellenbosch : University of Stellenbosch, 2009-03)
    NUMERICAL design optimization provides a powerful tool that assists designers in improving their products. Design optimization automatically modifies important design parameters to obtain the best product that satisfies ...

  • Optimization of fir-tree-type turbine blade roots using photoelasticity 

    Hettasch, Georg (Stellenbosch : University of Stellenbosch, 1992-12)
    ENGLISH ABSTRACT: The large variety of turbo-machinery blade root geometries in use in industry prompted the question if a optimum geometry could be found. An optimum blade root was defined as a root with a practical ...

  • Parallel paradigms in optimal structural design 

    Van Huyssteen, Salomon Stephanus (Stellenbosch : Stellenbosch University, 2011-12)
    ENGLISH ABSTRACT: Modern-day processors are not getting any faster. Due to the power consumption limit of frequency scaling, parallel processing is increasingly being used to decrease computation time. In this thesis, ...

  • Particle deflection and plate-out dynamics in a helium stream 

    Steyn, Hermanus Johannes (Stellenbosch : University of Stellenbosch, 2009-12)
    ENGLISH ABSTRACT: In the primary circuit components of high temperature reactors, various unwanted particles have been found. These particles include, for example, graphite and silver- 110 (110mAg). The silver-110 (110mAg) ...

  • A passive night-sky radiation system 

    Joubert, Gideon Daniel (Stellenbosch : Stellenbosch University, 2014-12)
    ENGLISH ABSTRACT: A passive night-sky radiation cooling system consists of a radiation panel and a cold water storage tank. The stored cold water may be used to cool a room during the day time, particularly in summer. ...

  • A passive suspension system for a hydrofoil supported catamaran 

    Kopke, Markus (Stellenbosch : University of Stellenbosch, 2008-03)
    This study investigates practical passive methods to improve the seakeeping of a Hydrofoil Supported Catamaran (Hysucat). The Hysucat is a hybrid vessel combining hydrofoil efficiency with the stability of catamarans. The ...

  • Performance and thermo-mechanical cost evaluation of API 661 air-cooled heat exchangers 

    Ackers, Mogamat Sadley (Stellenbosch : Stellenbosch University, 2012-12)
    ENGLISH ABSTRACT: The optimal design of a heat exchanger for a specified heat transfer, pressure drop and set of ambient conditions entails minimising space, weight, material usage and overall cost. However, the variables ...