Browsing by Advisor/Supervisor
Now showing items 1-19 of 19
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Application of Monte Carlo analysis in the simulation of thermal-fluid network
(North-West University, 2003)Large thermal-fluid network simulations are usually conducted for fixed input steady-state conditions without accounting for statistical variations of these variables. This is not realistic and gives no indication of ... -
Application of the rate form of the equation of state for the dynamic simulation of thermal-hydraulic systems
(2013)The modelling of multi-phase water flow is an important modern-day design tool used by engineers to develop practical systems which are beneficial to society . Multi-phase water flow can be found in many important industrial ... -
Characterisation of long range radiation heat transfer in packed pebble beds
(North-West University, 2011)Due to its importance in the safety case of high temperature gas-cooled nuclear reactors, the effective thermal conductivity in packed pebble beds has been extensively studied by various researchers and several correlations ... -
Characterisation of the effective thermal conductivity in the near wall region of a packed pebble bed
(North-West University (South Africa)., 2021)The effective thermal conductivity is an important parameter that is representative of the overall heat transfer in a packed bed of spheres. An accurate prediction of the effective thermal conductivity is necessary for the ... -
Characterisation of thermal radiation in the near-wall region of a packed pebble bed
(2014)The heat transfer phenomena in the near-wall region of a randomly packed pebble bed are important in the design of a Pebble Bed Reactor (PBR), especially when considering the safety case during accident conditions. At ... -
Determining the potential impact of a micro heat pump for domestic water heating
(2002)Hot water used in the South African domestic sector is mostly heated by in-tank electrical resistance heaters. These so-called "geysers" are the major contributors to the undesirable high morning and afternoon peaks imposed ... -
Evaluation of alternative sanitary water heating configurations for demand side management
(North-West University, 2005)The largest percentage of sanitary hot water used in South Africa is heated by means of electrical resistance heaters. This is one of the major contributing factors to the undesirable high morning and afternoon peaks ... -
Evaluation of the enhanced thermal fluid conductivity for gas flow through structured packed pebble beds
(North-West University, 2010)The High Pressure Test Unit (HPTU) forms part of the Pebble Bed Modular Reactor (PBMR) Heat Transfer Test Facility (HTTF). One of the test sections that forms part of the HPTU is the Braiding Effect Test Section (BETS). ... -
Heat transfer phenomena in flow through packed beds
(North-West University, 2006)In order to simulate the thermal-fluid performance of a pebble bed reactor such as the PBMR, heat transfer phenomena in packed beds must be characterized. In the pseudo-heterogeneous simulation approach that is often ... -
Influence of structuredness on the pressure drop through a packed pebble bed
(North-West University, 2011)During this study an experimental test facility was designed and constructed with the purpose of conducting experiments to measure the pressure drop through packed beds of spheres with varying levels of structuredness. The ... -
Modelling the effective thermal conductivity in the near–wall region of a packed pebble bed
(North-West University, 2009)Inherent safety is claimed for gas-cooled pebble bed reactors, such as the South African Pebble Bed Modular Reactor (PBMR), as a result of its design characteristics, materials used, fuel type and physics involved. Therefore, ... -
Multi-quadrant performance simulation for subsonic axial flow compressors
(North-West University, 2007)The emergence of closed-loop Brayton cycle power plants, such as the PBMR, resulted in the need to simulate start-up transients for industrial multi-stage axial flow compressors operating at subsonic conditions. This implies ... -
Optimization of the in-line sanitary water heating system for demand side management in the South African commercial and industrial sectors
(North-West University, 2005)It is currently estimated that South Africa will be running out of surplus electrical capacity by the year 2007. This estimate is based on the current growth in economy that primarily includes the electrification of ... -
Pressure formulation and adaptive control of numerical algorithms for transient flow in pipe networks
(North-West University, 2012)Fluid flow network simulation codes are commonly used as a design and analysis tool for many engineering problems such as gas distribution networks, power plants and heat pumps. Two formulations of conservation of momentum ... -
Simulation of natural circulation in an air-cooled Reactor Cavity Cooling System using Flownex
(2014)Nuclear reactors with improved safety concepts are currently being studied within the nuclear engineering community, with a focus on passive safety features. One of these reactor concepts is the Very High Temperature ... -
Techno–economic comparison of power conversion units for the next generation nuclear plant
(North-West University, 2005)The choice of thermodynamic cycle configuration is a vital first step in the development of a new nuclear power plant. Various cycle configurations for High Temperature Gas Reactor power conversion are under investigation. ... -
Thermal fluid analysis of combined power and desalination concepts for a high temperature reactor
(North-West University, 2011)South Africa is on a path of dramatically increasing its energy supplying capabilties. Eskom (the main utility supplying electricity to the national grid) recently announced that future power station technologies will ... -
Thermal-fluid simulation investigation of the reactor cavity cooling system standpipes design for the pebble bed modular reactor
(North-West University, 2003)Pebble Bed Modular Reactors are advanced nuclear reactors and are being developed to possess inherent safety and reliability. This is achieved by utilizing a sequence of passive thermal storage and heat transfer mechanisms, ... -
The zonal approach applied to the simulation of the radiative heat transfer in a packed pebble bed
(North-West University (South Africa), 2020)The Fukushima Daiichi Nuclear Disaster highlighted the importance of nuclear safety and the importance of modeling a nuclear reactor under diverse conditions. Applied to pebble bed reactors, these diverse conditions include ...