Now showing items 1-20 of 35

  • Air-cooled condenser steam flow distribution and related dephlegmator design considerations 

    Owen, Michael Trevor Foxwell (Stellenbosch : Stellenbosch University, 2013-12)
    ENGLISH ABSTRACT: The steam-side side operation of a practical air-cooled steam condenser is investigated using a combination of CFD, numerical, analytical and experimental methods. Particular attention is directed towards ...
  • Aspects of distributed conceptual design support 

    Schueller, Andreas (Stellenbosch : Stellenbosch University, 2002-04)
    ENGLISH ABSTRACT: The findings of an investigation into the requirements of a support system for distributed conceptual design in small and medium enterprises are presented. Distributed conceptual design refers to the ...
  • Characteristics of gas-liquid counterflow in inclined ducts with particular reference to reflux condensers 

    Zapke, Albert (Stellenbosch : Stellenbosch University, 1997-12)
    ENGLISH ABSTRACT: An experimental investigation on gas-liquid counterflow in inclined rectangular ducts is conducted. The pressure drop across the sharp-edged gas inlet and the pressure gradient inside the duct are ...
  • A critical evaluation and refinement of the performance prediction of wet-cooling towers 

    Kloppers, Johannes Christiaan (Stellenbosch : University of Stellenbosch, 2003-12)
    The thermal performance prediction of wet-cooling towers is critically analyzed and refined. Natural draft counterflow towers and mechanical draft counterflow and crossflow towers are considered. The Merkel, Poppe and ...
  • Design analysis of a lomolding machine 

    Goussard, Charl Leonard (Stellenbosch : University of Stellenbosch, 2007-12)
    This dissertation describes the design analysis of a lomolder (a machine similar to an injection moulding machine). It focuses on key design aspects that will drive the purchase cost of the machine and that will also ...
  • Design and development of a novel wave energy converter 

    Joubert, James Rattray (Stellenbosch : Stellenbosch University, 2013-12)
    ENGLISH ABSTRACT: The design, development and evaluation of a novel wave energy converter (WEC) device, called the ShoreSWEC, in a South African port development is presented. Based on the device requirements, site ...
  • 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 ...
  • The design, kinematics and error modelling of a novel micro-CMM parallel manipulator 

    Rugbani, Ali Milud (Stellenbosch : Stellenbosch University, 2014-04)
    ENGLISH ABSTRACT: The research presented in this dissertation establishes a micro-CMM parallel manipulator as a viable positioning device for three degree of freedom micro measurement applications. The machine offers the ...
  • Development of patient-specific knee joint prostheses for unicompartmental knee replacement (UKR) 

    Van den Heever, David Jacobus (Stellenbosch : Stellenbosch University, 2011-12)
    ENGLISH ABSTRACT: The knee is the largest, most complicated and incongruent joint in the human body. It sustains very high forces and is susceptible to injury and disease. Osteoarthritis is a common disease prevalent ...
  • Dual sequential approximation methods in structural optimisation 

    Wood, Derren Wesley (Stellenbosch : Stellenbosch University, 2012-03)
    ENGLISH ABSTRACT: This dissertation addresses a number of topics that arise from the use of a dual method of sequential approximate optimisation (SAO) to solve structural optimisation problems. Said approach is widely ...
  • Edge scanning and swept surface approximation in reverse engineering 

    Schreve, Kristiaan (Stellenbosch : Stellenbosch University, 2001-12)
    ENGLISH ABSTRACT: Broadly speaking Reverse Engineering is the process of digitising a physical object and creating a computer model of the object. If sharp edges formed by two surfaces can be extracted from a point cloud ...
  • The effect of fuel formulation on the exhaust emissions of spark ignition engines 

    Bell, Arthur (Stellenbosch : University of StellenboschStellenbosch : University of Stellenbosch, 2006-03)
    The research described in this dissertation examined the effects that fuel formulation can have on the regulated exhaust emissions produced by spark ignition engines in a South African context. Typical South African ...
  • The effectiveness of axial flow fans in a-frame plenums 

    Venter, Sarel Jacobus; Kroger, D. G. (Stellenbosch : University of Stellenbosch, 1990-03)
    ENGLISH ABSTRACT: The ultimate goal of this project is to ensure a better understanding of the governing mechanisms present when flow distorting components are installed in close proximity of an axial flow fan. The ...
  • The effectiveness of particle dampers under centrifugal loads 

    Els, Daniel Nicolaas Johannes (Stellenbosch : University of Stellenbosch, 2009-03)
    The main research objective of this dissertation was to determine the performance parameters of particle dampers (PDs) under centrifugal loads. A test bench was developed consisting of a rotating cantilever beam with a ...
  • Evaluation of drop break-up after impingement on horizontal slat grids and the effect of drop size of cooling tower rain zone performance 

    Terblanche, Riaan (Stellenbosch : Stellenbosch University, 2011-12)
    ENGLISH ABSTRACT: Natural draught wet-cooling tower rain zone performance can be significantly enhanced by reducing the mean drop size in the rain zone with the installation of specially designed grids below the cooling ...
  • A flexible distributed design assistance tool in early design phases 

    Liu, Yang (Stellenbosch : Stellenbosch University, 2007-12)
    ENGLISH ABSTRACT: The globalisation is increasing the complexity of product development in terms of product variants and the range of technologies implemented. It emphasises the requirement for developing various design ...
  • Formulation of a weakly compressible two-fluid flow solver and the development of a compressive surface capturing scheme using the volume-of-fluid approach 

    Heyns, Johan Adam (Stellenbosch : Stellenbosch University, 2012-12)
    ENGLISH ABSTRACT: This study presents the development and extension of free-surface modelling techniques for the purpose of modelling two-fluid systems accurately and efficiently. The volume-of-fluid (VOF) method is ...
  • Four quadrant axial flow compressor performance 

    Gill, Andrew (Stellenbosch : Stellenbosch University, 2012-03)
    ENGLISH ABSTRACT: The aims of this thesis are to identify all possible modes of operaton for a multi-stage axial flow compressor; then to characterise the performance, attempt to numerically model operation, and determine ...
  • From turbo-machines to solar chimneys 

    Von Backstrom, Theodor W. (Stellenbosch : Stellenbosch University, 2012-12)
    ENGLISH ABSTRACT: This dissertation is basically a summary, with some interpretation, of published research by the author. The scope is limited to the fields of turbo-machinery, computational fluid dynamics and solar ...
  • Implementation of a two-stream-fan in the CIRSTEL system 

    Heise, R. (Stellenbosch : University of Stellenbosch, 2006-12)
    This thesis describes the design and incorporation of a twin-stream fan into the CIRSTEL tail boom. The Combined Infra-Red Suppression and Tail rotor Elimination (CIRSTEL) tail boom is a system designed to replace the ...