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 110 for “"newtonian fluids"”.
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Filtration of non-Newtonian fluids.
In view of increasing usage and importance of non-Newtonian fluids in the chemical industries and in scientific research, an investigation into the filtration of non-Newtonian fluids was undertaken. During the course of the present investigation, filtration equipment was designed and constructed to …
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Controllability of Non-Newtonian fluids under homogeneous flows
… submanifolds in the state space on which the non-Newtonian flow fields are weakly controllable. This kind of approach based on the control Lie algebra can be applied to a wider variety of complex models.
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Spin coating of Newtonian and non-Newtonian fluids
The work in this thesis deals with the axisymmetric flow of a thin fluid layer on a rotating substrate.
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Experimental study of a vortex triode using non-Newtonian fluids.
Dept. of Mechanical, Automotive, and Materials Engineering. Paper copy at Leddy Library: Theses & Major Papers - Basement, West Bldg. / Call Number: Thesis1987 .L458. Source: Masters Abstracts International, Volume: 40-07, page: . Thesis (M.A.Sc.)--University of Windsor (Canada), 1987.
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Computational analysis of non-isothermal flow of non-Newtonian fluids
The dynamics of complex fluids under various conditions is a model problem in bio-fluidics and in process industries. We investigate a class of such fluids and flows under conditions of heat and/or mass transfer. Experiments have shown that under certain flow conditions, some complex fluids (e.g. …
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Instabilities of jets of non-Newtonian fluids impacting a plate
… of buckling and coiling of jets of viscous, Newtonian liquids impacting a plate has received a substantial level of attention over the past two decades, both from experimental and theoretical points of view. Nevertheless, most industrial and everyday life fluids are non-newtonian, and their …
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The numerical solution of free surface problems for incompressible Newtonian fluids
This thesis describes a new approach for the solution of two-dimensional, time-dependent, surface-tension-driven free-surface flows involving domains of arbitrary shape that may undergo large changes in shape during the course of a problem. Both Stokes and Navier-Stokes problems are considered, a …
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Boundary-layer analysis and measurement of Newtonian and non-Newtonian fluids
… flows. Heat, mass and momentum transfer of Newtonian and power-law non-Newtonian fluids were theoretically investigated using an implicit finite-difference scheme. The results clearly· indicated that shear-dependent non-Newtonian viscosity controls the entire transport processes of the …
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Analytical approach to unidirectional flow of non-Newtonian fluids of differential type
… models and analytical techniques for non-Newtonian fluids of differential types on a vertical plate, horizontal channel, vertical channel, capillary tube and horizontal cylinder. For a vertical plate, a mathematical model of the unsteady flow of second-grade fluid generated by an …
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Helical flow of non-Newtonian fluids, with reference to drilling fluid flow.
… understand better the complex flow of drilling fluids in oil wells. After an initial discussion of the flow and its complexities, mathematical models are considered, and a 'helical flow' model adopted as being a reasonable approximation to the flow which may be solved in practice. Rheological …
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Local free convection to non-Newtonian fluids from a horizontal, isothermal cylinder
… established. These experimental results involved Newtonian fluids, and since that time volumes have been devoted to the subject. Only in recent years has attention been focused on the commonly encountered, yet rheologically more complex, non-Newtonian class of fluid. It is within this realm that …
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Co-design of surface textures and non-newtonian fluids for decreased friction
… is typically limited to linear elastic solids or Newtonian fluids; however, design with more complex materials (for example non-linear viscoelastic materials) can provide ways to enhance performance. The main problems for design with non-linear viscoelastic materials are 1)~there is no universal …
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Surface textures and non-Newtonian fluids for decreased friction in full film lubrication
… reduction. Gap controlled experiments with Newtonian fluids were performed on a custom tribo-rheometer in order to measure the normal force production and apparent viscosity reduction due to the surface textures. This work shows that symmetry must be broken in order to produce normal forces …
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Modeling the flow of non-Newtonian fluids in packed beds at the pore scale
… such as multi-phase flows, inertial flows, non-Newtonian flows, and reactive flows. Pore-scale modeling is a first-principles approach to modeling flow and transport in porous media. In this work, network models that are physically representative of specific unconsolidated media are created. The …
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Laminar heat transfer to non-Newtonian fluids in pipes with abrupt changes in diameter
… local heat transfer coefficients for non-Newtonian fluids in laminar flow through pipes with abrupt discontinuities are reported. The fluids investigated were water-based polymeric solutiorrs of time-indpendent, pseudoplastic materials, with flow indices "n" ranging from 0.39 to 0.9.The …
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Modeling the dynamic response of low-density, reticulated, elastomeric foam impregnated with Newtonian and non-Newtonian fluids
… reticulated, elastomeric foam impregnated with Newtonian and non-Newtonian fluids. To develop tractable analytical models for this complex, non-linear phenomenon, a study is first undertaken on the permeability of foam under deformation. Using these results, a model is developed for the dynamic, …
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Experimental and Analytical Investigation of Particle Dynamics in Newtonian and non-Newtonian Fluids in a Taylor-Couette Cell
… 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 problems, and even …
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Laminar heat transfer to Newtonian and Non-Newtonian fluids in tubes. Temperature and velocity profiles were determined experimentally for heating and cooling of Newtonian and non-Newtonian fluids in tubes and the results compared with theoretical predictions incorporating a temperature-dependent viscosity.
… and heat transfer characteristics of viscous fluids flowing in tubes under laminar conditions. Particular attention has been given to the effects of the rheological properties and their variation with temperature. A review of problems of this type showed that in spite of the many potential …
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