Browsing by Issue Date

Now showing items 1-16 of 16

  • A unit stream power model for the prediction of local scour 

    Armitage, Neil Philip (Stellenbosch : Stellenbosch University, 2002-03)
    ENGLISH ABSTRACT: Local scour is the erosion of a riverbed resulting from the flow of the river around an obstacle. It is a principal cause of failure of bridges and other hydraulic structures. Current design practice ...

  • Solar chimney turbine performance 

    Gannon, Anthony John (Stellenbosch : University of Stellenbosch, 2002-03)
    This project investigates the performance of solar chimney power plant turbines. A solar chimney power plant consists of a tall chimney surrounded by a transparent deck or solar collector. The sun heats the air in the ...

  • Small and medium enterprise transformation (South African manufacturing) 

    Van Niekerk, Dirk Bouwer (Stellenbosch : Stellenbosch University, 2002-03)
    ENGLISH ABSTRACT "The environment sets many new requirements and SMEs can reactively adapt or they can design themselves to affect and operate in the environment as effective as possible. " - Trade and Industry Minister ...

  • The selection and single event upset testing of a DSP processor for a LEO satellite 

    Berner, Heiko (Stellenbosch : Stellenbosch University, 2002-03)
    ENGLISH ABSTRACT: After successful use of a DSP processor onboard the SUNSAT satellite, the need arose for a faster floating-point processor. A list of possible processors was generated from various selection criteria. ...

  • Rekenaargesteunde instelling van gekoppelde-resoneerderfilters deur die gebruik van modelgebaseerde parameteronttrekking 

    Van der Colff, A. P. E. (Stellenbosch : Stellenbosch University, 2002-03)
    ENGLISH ABSTRACT: The tuning of coupled-resonator filters is an essential part of its production. It is, however, a time consuming and expensive process. The use of model-based parameter extraction algorithms as ...

  • On-line analysis of the stability and other features of froths and foams by use of digital image processing 

    Ellis, Rene (Stellenbosch : Stellenbosch University, 2002-03)
    ENGLISH ABSTRACT: The objective of this study is the assessment of the usefulness of an industrial machine vision system for laboratory studies of especially flotation froths and other foams. With this in mind it was ...

  • Modelling and industrial application of flow through two-dimensional porous media 

    Du Plessis, J. Prieur (Stellenbosch : Stellenbosch University, 2002-03)
    ENGLISH ABSTRACT: A Representative Unit Cell (RUC) model for flow through two-dimensional porous media is presented and applied to two industrial related problems. The first application is to that of cross-flow in tube ...

  • Harmonic mixer analysis and design 

    Van der Merwe, Marius (Stellenbosch : Stellenbosch University, 2002-03)
    ENGLISH ABSTRACT: Harmonic mixers are capable of extended frequency operation by mixing with a harmonic of the LO (local oscillator) signal, eliminating the need for a high frequency, high power LO. Their output spectra ...

  • Evaluation of the constant current angle controlled reluctance synchronous machine drive 

    Fick, Pieter D. (Stellenbosch : Stellenbosch University, 2002-03)
    ENGLISH ABSTRACT: This thesis describes. the design and evaluation of a constant current angle controller for a variable speed reluctance synchronous machine (RSM) drive, as an energy efficient high performance drive. ...

  • An evaluation of a design method for mixed flow fans 

    Du Toit, Jacques H. (Jacques Hendrik) (Stellenbosch : Stellenbosch University, 2002-03)
    ENGLISH ABSTRACT: Mixed flow fans find application in an operating region between that of axial flow and centrifugal fans. The candidate investigated the working of these mixed flow fans and formulated a design algorithm. ...

  • Development of a high speed PCI data capture card for the SUNSAT I ground station 

    Van der Westhuizen, W. J. (Willem Joseas) (Stellenbosch : Stellenbosch University, 2002-03)
    ENGLISH ABSTRACT: The primary payload of the University of Stellenbosch's micro-satellite, SUNSAT I, was a high quality imager, capable of taking stereoscopic images of the surface of the earth. Although the orbit of ...

  • Development and analysis of a distributed control strategy for power electronic converters 

    Du Toit, J. A. (Jacques Andre) (Stellenbosch : Stellenbosch University, 2002-03)
    ENGLISH ABSTRACT: The dissertation presents an alternative approach to the control of power electronic converters. The conventional approach is to use a centralized controller with one or more measurement systems providing ...

  • Design and optimization of hydrofoil-assisted catamarans 

    Migeotte, Gunther (Stellenbosch : Stellenbosch University, 2002-03)
    ENGLISH ABSTRACT: This work is concerned with the hydrodynamic design of hydrofoil-assisted catamarans. Focus is placed on the development of new and suitable design methods and application of these to identify the most ...

  • A de-coupled level controller for cascaded flotation processes 

    Van Heerden, Jacobus P. (Jacobus Petrus) (Stellenbosch : Stellenbosch University, 2002-03)
    ENGLISH ABSTRACT: Flotation was introduced early in the zo" century as a separation process for extracting valuable minerals from grinded ore. Today flotation is a dominant mineral concentration method and is used for ...

  • The application of the numerical wind wave model SWAN to a selected field case on the South African coast 

    Van der Westhuysen, A. J. (Stellenbosch : University of Stellenbosch, 2002-03)
    ENGLISH ABSTRACT: In this study the numerical short wave model SWAN is evaluated for application to a selected coastal region in South Africa. The aim of this study was to evaluate the degree of accuracy with which SWAN ...

  • Adsorptive separations in the production of neutral wine alcohol 

    Goliath, Elroy Mario (Stellenbosch : Stellenbosch University, 2002-03)
    ENGLISH ABSTRACT: This study describes the design, construction, complete industrialisation and operation of a dual bed vacuum swing adsorption (VSA) demonstration plant, which operates at atmospheric and sub-atmospheric ...