Browsing Masters Degrees (Mechanical and Mechatronic Engineering) by Title

Now showing items 197-216 of 284

    • On alternative solution methods for solving approximate subproblems in SAO (Sequential Approximate Optimization) 

      Cronje, Marlize (Stellenbosch : Stellenbosch University, 2015-12)
      ENGLISH ABSTRACT: In this study, we focus our attention on sequential approximate optimization (SAO) techniques for large scale nonlinear constrained simulation based optimization problems, and aim to add to the efficiency ...

    • 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 ...

    • The optimal patient-specific placement of the reverse total shoulder component 

      Delport, Sven (Stellenbosch : Stellenbosch University, 2015-03)
      ENGLISH ABSTRACT: Reverse total shoulder arthroplasty is used as the treatment for arthritic rotator cuff deficient shoulders. Some of the most common complications of a reverse shoulder arthroplasty are scapular notching, ...

    • 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 ...

    • Performance characteristics of an air-cooled steam condenser incorporating a hybrid (dry/wet) dephlegmator 

      Heyns, Johan Adam (Stellenbosch : Stellenbosch University, 2008-12)
      This study evaluates the performance characteristics of a power plant incorporating a steam turbine and a direct air-cooled dry/wet condenser operating at different ambient temperatures. The proposed cooling system uses ...

    • Performance characteristics of packed bed thermal energy storage for solar thermal power plants 

      Allen, Kenneth Guy (Stellenbosch : University of Stellenbosch, 2010-03)
      ENGLISH ABSTRACT: Solar energy is by far the greatest energy resource available to generate power. One of the difficulties of using solar energy is that it is not available 24 hours per day - some form of storage is ...

    • Performance evaluation of a micro gas turbine centrifugal compressor diffuser 

      Krige, David Schabort (Stellenbosch : Stellenbosch University, 2013-03)
      ENGLISH ABSTRACT: Micro gas turbines used in the aerospace industry require high performance with a compact frontal area. These micro gas turbines are often considered unattractive and at times impractical due to their ...

    • Performance evaluation of a solar chimney power plant 

      Hedderwick, Richard Anthony (Stellenbosch : University of Stellenbosch, 2000-12)
      A solar chimney power plant consists of a central chimney that is surrounded by a transparent canopy located a few meters above ground level. The ground beneath this canopy or collector as it is known is heated by the ...

    • Performance evaluation of air-cooled heat exchangers 

      Makhema, Thabo (Stellenbosch : Stellenbosch University, 2000-12)
      ENGLISH ABSTRACT: The main objective of this study to determine the air-side heat transfer and pressure drop performance characteristics of commercially available round and elliptical fined tubes. A . computer code to ...

    • Performance evaluation of water collecting systems with a hybrid dephlegmator 

      Du Plessis, Jacques J. P. (Stellenbosch : Stellenbosch University, 2014-12)
      ENGLISH ABSTRACT: Water collection systems are used in wet-cooling towers (WCTs) with fill over which water to be cooled flows and in evaporative air-cooled heat exchangers (EACHEs) having deluged tube bundles over which ...

    • Performance evaluation of wet-cooling tower fills with computational fluid dynamics 

      Gudmundsson, Yngvi (Stellenbosch : Stellenbosch University, 2012-03)
      ENGLISH ABSTRACT: A wet-cooling tower fill performance evaluation model developed by Reuter is derived in Cartesian coordinates for a rectangular cooling tower and compared to cross- and counterflow Merkel, e-NTU and Poppe ...

    • Performance improvement of the Rover 1S/60 Gas Turbine Compressor 

      Luiten, Ruben Vincent (Stellenbosch : Stellenbosch University, 2015-03)
      ENGLISH ABSTRACT: The use of gas turbines in central receiver solar power plant cycles has become an increasingly popular research topic. This has led to the need to investigate and analyse the effect of the solar receiver ...

    • Performance investigation of a turbocharger compressor 

      De Wet, Andrew Louis (Stellenbosch : Stellenbosch University, 2011-12)
      ENGLISH ABSTRACT: Stellenbosch University participated in a project to re-design the compressor section of a diesel locomotive turbocharger. Tests conducted on the prototype compressor showed possible rotating stall in ...

    • Performance of a parabolic trough solar collector 

      Brooks, Michael John (Stellenbosch : University of Stellenbosch, 2005-03)
      Parabolic trough solar collectors (PTSCs) constitute a proven source of thermal energy for industrial process heat and power generation, although their implementation has been strongly influenced by economics. In recent ...