Flow and particle transport by the lattice Boltzmann method.
Item
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Title
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Flow and particle transport by the lattice Boltzmann method.
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Identifier
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AAI3310592
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identifier
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3310592
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Creator
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Yan, Yiguang.
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Contributor
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Adviser: Joel Koplik
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Date
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2008
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Language
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English
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Publisher
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City University of New York.
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Subject
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Engineering, Mechanical
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Abstract
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Three problems involving lattice Boltzmann computations of confined fluid flow and particle transport are studied. First, the flow of shear-thinning and shear-thickening non-Newtonian fluids at finite Reynolds numbers in self-affine fracture channels is considered. Such flows are relevant to the modeling of hydrocarbon recovery processes in geological fracture networks. Microscopic aspects of the flow fields and macroscopic properties such as permeability are obtained under a variety of flow conditions, and the results may be summarized in a number of scaling relationships. Secondly, we study suspension dynamics and particle deposition due to gravity in finite Reynolds number channel flows. The local velocity and concentration fields in the Hele-Shaw case flow domain are found, along with macroscopic characterizations such as fluid flux and particle flux as functions of the control parameters Reynolds number, buoyancy number and bulk suspension concentration. An initial study of the surface evolution of self-affine fracture walls is made, which suggests that height correlations are partially preserved in deposition processes. Lastly, we investigate two-particle hydrodynamic interactions in confined shear flow with finite fluid inertia. The particle trajectories are determined as a function of the initial and flow conditions, and a "phase diagram" of final states is obtained. A variety of fixed point and open and closed limit cycle behaviors are observed, and the results related to particle train and cluster formation in shear and Poiseuille suspension flows.
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Type
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dissertation
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Source
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PQT Legacy CUNY.xlsx
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degree
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Ph.D.
