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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 8 of 8 for “"particle sedimentation"”.
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Experimental and Analytical Investigation of Particle Dynamics in Newtonian and non-Newtonian Fluids in a Taylor-Couette Cell
<p>This doctoral dissertation investigates heavy particle sedimentation in Newtonian and non-Newtonian fluids, aiming to understand their behavior in Drilling Fluid (DF) systems used in oil and gas industry, where such phenomenon can lead to operational issues such as lost circulation, well control …
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Water Treatment: Fundamentals and Practical Implications of Bubble Formation
… conventional treatment, including impaired particle settling, filter air binding, and measurement as false turbidity in filter effluent. Coagulation processes can cause supersaturation and bubble formation by converting bicarbonate alkalinity to carbon dioxide by acidification. A model was …
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Numerical study of particle dynamics in a falling-ball viscometer
… viscometer is a device where a spherical particle falls along the axis of a circular cylinder filled with viscous fluid. The various classical results for this device are developed under the assumption that the Reynolds number of the flow is zero, i.e., Stoke's flow. Inertial effects are …
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Particle export and flux through the Mesopelagic in the high-latitude north and South Atlantic
… probably upon impending Si-limitation. The particles were rich in transparent exopolymer particles (TEP, sticky polysaccharides secreted by phytoplankton), and a comparatively large proportion (20–40%) of the exported POC sank past 750 m. This shows that diatom blooms can produce rapid …
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Laser and optical based methods for detecting and characterising microorganisms
… speckle can be obtained from the movement of particles suspended in liquids. The speckle patterns show fluctuations in space and time which may be correlated with the activity of the constituents in the suspension. Initially the speckle parameters were standardized to non-motile and inert …
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CFD-DEM modelling of liquid-solid-gas flow in rotary drums and an application in solar panel leaching
… gases and the typically nonspherical nature of particles in the rotary drums, this thesis developed an unresolved reactive superquadric computational fluid dynamics-discrete element method (CFD-DEM) coupled with the volume of fluid (VOF) to describe the complex behaviours of …
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Biosensor design utilizing particle-bound enzymes
… isolation and immobilisation onto silica carrier particles was achieved directly from lysate. In addition, the incorporation of a coloured fluorescent protein in the fusion enabled the protein production and immobilisation to be followed visually without significant laboratory equipment. …
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EXPERIMENTAL AND MODELING STUDIES OF COLLOIDAL SUSPENSION STABILITY OF HIGH-DENSITY PARTICLES IN AQUEOUS SOLUTIONS
Agglomeration and sedimentation of suspended colloidal particles occur in many natural phenomena, in consumer products, and in engineering applications. Stabilized colloidal pigment dispersions were used in ancient Egypt and in ancient France thousands of years ago. Present day applications include …