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Showing 1 to 19 of 19 for “"suspension flow"”.
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Segregation of granular particles in suspension flow
… particles due to instabilities in particle suspension flow. Research was conducted to characterize environmental phenomena related to granular flows, namely avalanches, mudslides, and the movement of glaciers. Results show the stripes were found to appear with a particle concentration of 10% …
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Heat Transfer in Laminar Solid-Fluid Suspension Flow
… of neutrally buoyant, concentrated polyethylene suspensions in silicone oil and kerosene mixture, and polystyrene suspensions in silicone oil and Freon 113 mixture were measured in a rotating Couette flow apparatus. Contrary to the case of single phase fluid, effective thermal conductivity was …
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Examination of Fluid-Particle in Turbulent, Non-Dilute, Particle Suspension Flow
… suspended in fully developed turbulent water flow in a vertical pipe (I.D. = 18.4 cm) have been conducted. An analytical model has been developed to predict the stochastic motion of particles in a non-dilute turbulent suspension flow. The model, incorporates hydrodynamic interaction between …
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Turbulent Heat Transfer in Suspension Flow Under the Influence of a Pulsating Magnetic Field
Made available in DSpace on 2014-12-05T19:16:01Z (GMT). No. of bitstreams: 1 6202916.pdf: 5019933 bytes, checksum: fbbdc030a09963caf64581329a4ebd72 (MD5) Previous issue date: 1962
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Inherent Instabilities and Discontinuities: The Kuramoto-Sivashinsky Equation and a Suspension Flow as Exemplars
… we consider the concentration of particles in suspension in a shear flow near a plane-wall, in which an inherent particle-free layer close to the wall forms spontaneously from a uniform concentration. We will show how the structure of this particle-free layer can be predicted at small times …
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Particle Transport and Heat Transfer in Gas-Solid Suspension Flow Under the Influence of an Electric Field
Made available in DSpace on 2014-12-09T17:13:37Z (GMT). No. of bitstreams: 1 6511837.pdf: 5885908 bytes, checksum: 4c9a41497f7ac66fbfa36c8f9475a9d5 (MD5) Previous issue date: 1965
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A study of the modes of gas-solids flow in pipelines
A variety of gas-solids flows can be observed in the pipeline of a pneumatic conveying system. These flows may be classified as one of three modes: i. suspension flow; ii. non-suspension moving-bed type flow; iii. non-suspension plug type flow. The modes of flow that a bulk material can achieve are …
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Measurement of properties of gas-solid suspensions using phase-Doppler anemometry
A detailed investigation to quantify flow properties of a dense turbulent air-solid suspension in a horizontal pipe was undertaken. The flow properties were measured along vertical and horizontal diameters using Phase Doppler Anemometry which was a nonintrusive technique that measured the size and …
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On site measurements of kraft pulp pump system efficiency
… work concerns the on-site measurements of pulp-suspension pumping efficiency. This involves the measurement of pump head, flow rate and power consumption. Provided that consistent flow measurements are available, it is possible to reliably and non-invasively measure actual pump system …
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The effect of phyllosilicate mineralogy and surface charge on the rheology of mineral slurries
… still remains a poor understanding of their suspension flow behaviour. The primary objective of this thesis was to characterise the colloidal behaviour of three commonly occurring phyllosilicates, namely muscovite, vermiculite and chrysotile in terms of their surface charge, mineralogical and …
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Heat transfer in nano/micro multi-component and complex fluids with applications to heat transfer enhancement
Thermal properties of complex suspension flows are investigated using numerical computations. The objective is to develop an efficient and accurate computational method to investigate heat transport in suspension flows. The method presented here is based on solving the lattice Boltzmann equation …
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Increased production of aligned cellulose nanofibrils using microfluidic mixture chambers
… fibers from cellulose nanofibrils using flow focusing in microfluidic mixture chambers is examined and tested. This process accomplishes the difficult task of aligning cellulose nanofibrils and gelling them together to create macroscale cellulose fibers, and this study seeks to test the …
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Multi-scale computational modeling of particle adhesion dynamics under shear flow
… adhesion process in biological and industrial flows since these problems require modeling a wide range of spatiotemporal scales. The thesis is focused on multiscale modeling of particle adhesion process in shear flow with broad applications to practical suspension flow problems. The …
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Computer simulation studies of dense suspension rheology. Computational studies of model sheared fluids; elucidation, interpretation and description of the observed rheological behaviour of simple colloidal suspensions in the granulo-viscous domain by Non-Equilibrium Particulate Dynamics.
… models which exhibit all the non-Newtonian flow phenomenology commonly seen in dense suspensions are investigated by particulate-dynamics computer-simulations. The objectives of these investigations are: (i) to establish the origins of various aspects of dense suspension rheology such as …
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Characterizing Erythrocyte Motions in Flowing Blood
… but follow convective diffusion in dilute suspensions. A critical need is to understand and characterize dispersion and diffusion as they apply to red cells in suspension flow. The dispersive motions of <br />0.5-micrometer beads and fluorescently labeled human RBC flowing in dilute …
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Concurrent evaporating spray jets in dilute gas-solid pipe flows
Evaporating spray jets into gas-solids suspensions are encountered in many industrial applications. The rapid evaporation of spray jets has significant effects on the gas-solids mixing near the jet nozzle regions, including non-uniform solids concentration dilution, gas/solids temperature …
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Electrohydrodynamic deposition and patterning of nano-hydroxyapatite for biomedical applications
… In principle, the EHDA process involves the flow of liquid/suspension from a needle under the influence of an electric field which results jetting and droplet formation. In this work, phase-pure nano-sized hydroxyapatite (nHA) was synthesised and taken up in ethanol to prepare a suitable …
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Simulation of concentrated non-Brownian frictional and adhesive suspensions in linear and nonlinear flows
… simulation method for non-Brownian suspension flows at low Reynolds number, based on the Fictitious Domain Method and supplemented by sub-grid lubrication corrections. In their usual form, sub-grid corrections involve the underlying linear flow. In the present work, the conditions …
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Batch and continuous production of stable dense suspensions of drug nanoparticles in a wet stirred media mill
… milling for the production of drug nanoparticle suspensions. However, a fundamental scientific/engineering understanding of various aspects of this process is still lacking. These challenges include elucidation of the governing mechanism(s) during nanoparticle formation and physical stabilization …