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Theses and Dissertations (Mechanical and Aeronautical Engineering): Recent submissions
Now showing items 181-200 of 380
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(University of Pretoria, 2014)Validated simulation models have become ever more important in the current technological and economic environment, where simulation is an integral part of the design process. In the field of vehicle dynamics, it is no ...
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(University of Pretoria, 2016)Glycerol has historically been used as an antifreeze fluid to facilitate heat transfer in the automotive and air conditioning and refrigeration industries. It has also been used as a lubricant in the processing of food and ...
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(University of Pretoria, 2015)The safety of motor vehicles is of primary concern in the modern age as the death rate of road users are still at unacceptably high numbers and is the second largest cause for unnatural death worldwide. Consumers often ...
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(University of Pretoria, 2016)Energy access is increasingly seen as a vital catalyst to wider social and economic development, which enables education, health and sustainable agriculture, and creates jobs. Therefore, sustainable growth and development ...
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(University of Pretoria, 2015)Heat exchangers are used throughout the world in important processes such as the generation of electrical energy. Modern heat exchangers are often forced to operate in the transitional flow regime, where flow can be ...
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(University of Pretoria, 2015)In the study, the optimal distribution of discrete heat sources in a two-dimensional data centre was investigated. The optimal placement of the cool supply air inlet and outlet was also investigated. The governing equations ...
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(University of Pretoria, 2015)This thesis describes the development of an open-loop control allocation function also known as a mixing function for aircraft with an unconventional control surface setup (i.e. not consisting of a conventional ...
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(University of Pretoria, 2015)There is currently a need for large diameter flanges for the supply of water in South Africa. These large diameter pipe flanges are required to accommodate pipes with nominal bores of up to 4 m and should successfully ...
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(University of Pretoria, 2015)Nanofluids are a new class of heat transfer fluids that aim to improve the poor thermal efficiency of conventional heat transfer fluids. The dispersion of nanoparticles into traditional heat transfer fluids, such as water, ...
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(University of Pretoria, 2016)The interaction between tyres and terrain is one of the most studied areas in the vehicle dynamics and terramechanics research communities because it is the only region where excitation forces act on the vehicle if ...
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Analysis of Conjugate Heat Transfer and Pressure Drop in Microchannels for Different Aspects Ratios (University of Pretoria, 2016)In this study the heat transfer and hydrodynamic parameters were experimentally investigated for a single microchannel housed in a stainless steel solid base material for different aspect ratios in the laminar regime with ...
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(University of Pretoria, 2015)The use of nanofluids in buoyancy-driven heat transfer can be very useful in enhancing the performance of various heat transfer applications. In this thesis, natural convection by multiwalled- carbon nanotubes (MWCNT) ...
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(University of Pretoria, 2015)Understanding the dynamic characteristics of blades is important in the online condition monitoring of turbomachinery. Conventionally contact methods are used for this purpose. However improvements in technology now allow ...
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(University of Pretoria, 2015)Several well-known equations are available in literature that can be used to determine the heat transfer coefficients of smooth tubes in the turbulent flow regime. When comparing the results of these equations they vary ...
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(University of Pretoria, 2015)The void fraction of condensation flow is an important parameter in determining the heat transfer and pressure drop characteristics of two-phase flow. In the past, studies involving void fraction, as well as heat transfer, ...
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(University of Pretoria, 2015)During the past few decades, substantial improvements were made to rail infrastructure worldwide. This was necessary to accommodate the ever increasing transportation demand and requirements. Nowadays, trains are required ...
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(University of Pretoria, 2015)Understanding the dynamic behavior of particulate materials is extremely important to many industrial processes with a wide range of applications ranging from hopper flows in agriculture to tumbling mills in the mining ...
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Nanofluid Thermal Conductivity - a thermo-mechanical, chemical structure and computational approach (University of Pretoria, 2015)Multiple papers have been published which attempt to predict the thermal conductivity or thermal diffusivity of graphite “nanofluids” 1–6. In each of the papers empirical methods (with no consideration of quantum mechanical ...
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(University of Pretoria, 2014)Directional solidification has a wide interest due to its importance to the iron and steel industry. Examples of further application can be found in the aerospace industry regarding the manufacture of turbine blades and ...
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(University of Pretoria, 2015)The feasibility of obtaining local wall temperatures by using liquid crystal thermography (LCT) in a counter-flow tube-in-tube heat exchanger was investigated. Local annulus-side heat transfer coefficients at the inlet and ...
Now showing items 181-200 of 380