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 20 of 66 for “"physical modelling"”.
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Physical Modelling of Tailings Dam Breach
Tailings dams are constructed in stages, exhibit sediment deposits located in the reservoir upstream of the dam crest (beaches) generated from slurry deposition, and are commonly designed with shallower upstream slopes in contrast with conventional water storage dams. Current breach models for the …
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Physical modelling of colloidal slurry flows
The study looks at the rheology and pipeline flow properties of colloidal suspensions dispersed in electrolytes of different concentration and type. Fuso silica spheres (0.8pm) form the dispersed phase of the suspension, and KN03, KCI electrolytes the continuous phase. The strength of the …
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Physical modelling of landslides in loose granular soils
The catastrophic consequences associated with landslides necessitate predictions of these hazards to be made with as much certainty as possible. However, the often complex nature of these events make predictions highly challenging. In this thesis, a number of hypotheses related to the triggering …
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Physical modelling of group behaviour of stone column foundations
Abstract available: p.3.
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Screw piles as offshore foundations : Numerical and physical modelling
In reviewing the recent development of the geotechnical engineering aspects of the offshore wind farm industry, it was found that there is an urgent need for more reliable and cost-effective foundation solutions. In this thesis, screw piles (helical piles) have been proposed as a potential …
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Temperature and physical modelling studies of open windrow composting
… of behaviour within such structures. In addition physical-chemical profiling was undertaken. It demonstrated that windrow temperature development is not uniform in either a spatial or temporal sense. Temperature variation is a key feature of composting. All regions of typical windrows exhibited …
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An Evolutionary Algorithms Approach to Physical Modelling of Vocal Synthesis
… Articulatory Inversion of vowels using the Praat physical model. Speech synthesis by computational means has been a field for many decades, giving rise to several differing approaches. While the physical modelling approach has been a continually active area of research, it has yet to prove a …
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Physical modelling of galaxy clusters and Bayesian inference in astrophysics
This thesis is concerned with the modelling of galaxy clusters, applying these models to real and simulated data using Bayesian inference, and the development of Bayesian inference algorithms applicable to a wide range of astrophysical problems. I present a comparison of mass estimates for $54$ …
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Mathematical and physical modelling of directional solidification of aerospace alloys
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1996.
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Computational fluid dynamics (CFD) and physical modelling of a metal refining process
… are: (1) Direct readings from a real kettle, (2) Physical modelling (using water), and finally (3) Computational Fluid Dynamics (CFD). The use of physical modelling, exploiting the techniques of similitude, to predict vortex was also validated. An Acoustic Doppler Velocimeter (ADV) probe was used …
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Biocementation of Road Foundations: Element Testing, Physical Modelling, and Micro-Scale Characterisation
The foundation of a road, composed by layers of granular materials overlying the subgrade, plays a key role in ensuring the overall performance of the road. Excessive deformation in these layers represents the root cause of structural deterioration, leading to various surface defects that impair …
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Numerical and physical modelling of piled rafts on soft clay under combined loading
… The problem was tackled by both numerical and physical modelling and different configurations of the system were examined, including the isolated components of the piled raft. An extended numerical parametric study was carried out using the general-purpose finite element code Abaqus to examine …
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Physical Modelling of Instability in Granular Soils and Tsunami Hazards Associated with Coastal Slope Failures
Coastal mass failures such as submarine and subaerial landslides have the potential to create significant tsunami hazards. As an inherently coupled solid-fluid interaction problem, accurate assessment of these hazards requires an understanding of the triggering mechanisms of failure to predict the …
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A Theoretical Framework for Seismic Time-lapse Difference AVO Analysis with Validation on Physical Modelling and Field Data
… survey to the time of the monitor survey. A physical modeling data set was acquired simulating a time-lapse problem to validate our theoretical results. Plexiglas, polyvinyl chloride (PVC), and phenolic slabs were used as proxy materials to simulate the cap rock and reservoir at the time of …
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Development of a current to pressure (I/P) converter. System analysis of a current to pressure (I/P) converter through physical modelling and experimental investigation, leading to a design for improved linearity and temperature independence.
… an existing I/P converter through mathematical modelling. A simulation model has been created and which allows prediction of performance of the I/P converter. This tool has been used to identify areas of poor performances through theoretical analysis and consequently led to optimisation of …
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Modelling of simple prismatic channels with varying roughness using the SKM and a study of flows in smooth non-prismatic channels with skewed floodplains
Accurate modelling, both numerical and physical, is vital to further our understanding of flow in rivers. This thesis examines both methods of flow applied to two distinct problems; numerical modelling of flow in simple channels with heterogeneous roughness and physical modelling of flow in …
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