Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"physics modelling"”.
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Multi-physics modelling of liquid metals in Advanced Nuclear Systems
L'abstract è presente nell'allegato / the abstract is in the attachment
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Multi-physics modelling of superconducting cables for application in nuclear fusion
L'abstract è presente nell'allegato / the abstract is in the attachment
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Oxygen Transport in the Human Placenta: A Multi-Physics Modelling Approach
… demonstrating that image-based computational modelling is a robust platform to explore the structure-function relationship in the placenta. Following work deals with the study of blood flow through the fetal capillary network, with particular interest in its role on the oxygen transport …
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3D Reactor Physics Modelling Of Reduced-Moderation Water Reactor (RMWR) Fuel
… The objective of this research is the 3D reactor physics modeling of RMWR. The current methods of modeling: 2D deterministic codes are not sufficient and 3D Monte Carlo codes are slow due to the need to generate data for a full core axially heterogeneous RMWR model. These drawbacks severely limit …
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Enhanced physics modelling and multistatic data integration for breast tissue reconstruction in microwave radar imaging
… three methodologies. Firstly, an enhanced-physics beamforming algorithm was developed as a combination of an analytical binary-partitioning model with a full frequency-dependent propagation-speed formulation, yielding piecewise time delays. The enhanced physics modelling was observed to …
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Degradation and Failure Analysis of Environmental Barrier Coatings under Adverse Operating Environment: Multi-Physics Modelling
… of bi-layer Yb₂Si₂O₇/Si EBCs using COMSOL Multiphysics methodologies. Thermal cycle-induced temperature fields were implemented into the EBC model, aiming to simulate the system's in-service conditions. Coupled thermo-mechanical processes were simulated, incorporating high-temperature creep …
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DATA-DRIVEN MULTI-SCALE MULTI-PHYSICS MODELLING OF THERMAL STRESS AND DISTORTION IN ADDITIVE MANUFACTURING
We construct a multi-scale multi-physics modeling framework to predict the thermal stress and distortion in AM fabrications. With the proposed approach, the rough surfaces and internal voids can be well incorporated. The coupled CFD-FEM approach are utilized to simulate the two typical powder-based …
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Optimisation modelling for microelectronics packaging and product design
… This integrated approach is intended as a modelling tool for calculating optimal design solutions for electronic packaging and component assembly with a focus on die reliability and the thermal management. The motivation is to introduce numerical optimisation theory as an approach for a …
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Calculating thermochemical equilibrium for multiphysics simulations of nuclear materials : development of yellowjacket gibbs energy minimiser
… scales. The strong interactions between multiple physics at different length and time scales creates a need for multi-scale, multi-physics modelling tools. In nuclear fuels and structural materials, the problem gets compounded by the fact that, in addition to an extreme environment, the …
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Steady-State and Transient Thermal Modeling of Solid Electrolysis (SOXE) within the Mars Oxygen In-Situ Resource Utilization Experiment
… Martian atmosphere. Accurate and high fidelity modelling of internal temperatures of the Solid Oxide Electrolysis (SOXE) stack are crucial to understanding operational performance of MOXIE. Weight, energy, space, and complexity constraints limited the ability to add internal temperature sensors …
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Applicability of rock physics models in conjunction with seismic inverted data to characterize a low poro-perm gas-bearing sandstone reservoir for well location optimization, Bredasdorp Basin, SA
… dissertation is to develop a predictive rock physics theory that establishes relations between rock properties and the observed seismic and to present the results of different seismic characterization techniques to interpret a tight gas sand reservoir off the south coast of South Africa using …
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An evaluation of the net breeding capability of heterogeneously-fuelled pressure-tube heavy water reactors with the thorium fuel cycle
… The goal of this work was to perform reactor physics modelling of the 380-channel, 700 MWe PT-HWR, attempting to achieve a self-sustaining equilibrium thorium cycle with specific focus on operational viability. The DRAGON neutron transport code was used to model ThO₂/²³³UO₂ fuel lattice cells. …
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Computer simulation of electromigration in microelectronics interconnect
… conditions. In this work, novel numerical modelling methods of EM in micro-electronics devices have been developed and the methods have been used to analyse EM process in a lead free solder thin film, and to optimize the design of electronic components in order to reduce the risk of EM …
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Assessing the Effectiveness of Lockdowns and Mask Mandates on Reducing COVID-19 Infections in Essential Worker Populations
Throughout history pandemics have been a constant threat for mankind. Still, the COVID-19 disease resulted in the worst health crisis in more than a century. This suggests that more tools are needed to give adequate guidance for decision-making. Several epidemic models have been proposed to …