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 300 for “"numerical studies"”.
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Numerical studies on many-body localization
… been the focus of a large body of theoretical, numerical, and experimental work in recent years. In this thesis we numerically study several aspects of MBL and the ergodic-MBL transition. Chapter 1 introduces the concept of thermalization in quantum systems, which relies on the idea of the …
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Numerical studies of Black Hole initial data
Diese Doktorarbeit behandelt neue Methoden der numerischen Evolution von Systemen mit binären Schwarzen Löchern. Wir analysieren und vergleichen Evolutionen von verschiedenen physikalisch motivierten Anfangsdaten und zeigen Resultate der ersten Evolution von so genannten 'Thin Sandwich' Daten, die …
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Numerical studies of Newtonian and viscoelastic fluids
The direct numerical simulation (DNS) approach is used to understand the flow behavior of Newtonian and viscoelastic fluids in porous materials, four-to-one contraction and the flow of a Newtonian fluid past an airfoil. In simulations the viscoelastic fluid is modeled by the finitely extensible …
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Experimental and numerical studies of whirling fires
… This work, is an experimental, theoretical and numerical study of whirling fires. Experimental results, a modified CFD model and simulations of whirling flames are presented within this Thesis. The work aims to overcome the limitations of the previous research of whirling fires which is …
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Numerical studies of unsteady flow past bluff bodies
… past prismatic two dimensional bodies have been numerically studied by solving the full Navier-Stokes equations at Reynolds numbers up to 1000 to study onset of vortex shedding and early stages of flow evolution. Loads have been calculated for the trapezoid section by solving Poisson equation for …
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Numerical studies of reactive polymer flows in porous materials
This dissertation presents a new numerical model of reactive polymer flow in heterogeneous porous media. A moment representation of the log-normal polymer molecular weight distribution is used to model polymer as a multi-component species. Three leading moments are used to simulate the polymer …
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Analytical and numerical studies on mismatch strain related problems
This thesis presents the analytical, numerical, and experimental study on mismatch strain related problems. Three problems are analyzed: self-assembling of polymer thin film, failure of nanotube and nanorod silicon anodes in lithium batteries and modified failure criterion for earthquake …
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Kinematics and Kinetics of Granular Mixture: Experimental and Numerical Studies
Additionally, kinetic properties are investigated for a few cases, primarily computationally. Specifically, the sources and sinks of energy are investigated---the major dissipation of energy is found to be frictional sliding. Additionally, the distribution of forces in the solid-like bulk and the …
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Numerical Studies on Recent Improvements of the Minkowski-Hlawka Theorem
Made available in DSpace on 2014-12-05T21:50:22Z (GMT). No. of bitstreams: 1 6206114.pdf: 2540753 bytes, checksum: b32e8fe09d869d383c23ef70134c718a (MD5) Previous issue date: 1962
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Multi-scale Numerical Studies on Characterization of Shale Gas Reservoir Development
… In Chapter 3, an integrated multi-scale numerical simulation platform is established. Based on the multi-scale characterization platform, the insights obtained at the micro-scale such as nanopore surface coverage evolution and induced heterogeneity can provide a better understanding of …
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Numerical studies of the critical behaviour of non-commutative field theories
… constructed of matrices of size N = 7. Our numerical results also suggest the existence of stripe phases- phases in which modes with higher momentum l have non-negligible contribution. The second system under study is a matrix model realized via competing Yang-Mills and Myers terms. In its …
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Numerical studies of flow in porous media using an unstructured approach
Flow and transport in porous media is relevant to many areas of engineering and science including groundwater hydrology and the recovery of oil and gas. Porous materials are characterized by the unique shape and connectivity of the internal void structures which give rise to a large range in …
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Experimental and numerical studies on oil spilling from damaged oil tankers
… a damaged tank by combining experimental and numerical investigations, with a focus on the dynamic spilling process from damaged oil tankers which is either fixed or subjected to motion, which have not been systematically investigated. In the experimental investigation, the submerged oil …
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Theoretical and Numerical Studies of Frequency Up-shifted Ionospheric Stimulated Radiation
… decay instability by using theoretical and numerical simulation models, (2) study the variation of the four-wave decay instability spectral features for a wide range of plasma and pump wave parameters, and (3) access its possible role in the production of the BUM spectral feature. Results of …
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EXPERIMENTAL AND NUMERICAL STUDIES OF BUBBLE DEVELOPMENT PROCESS IN ROTATIONAL FOAM MOLDING
<p>Commercial interests in polymeric foams continue to increase due to their unique physical characters and the new emerging applications for foamed materials. This thesis investigates the foam development process under non-pressurized conditions as applicable to rotational molding to elucidate the …
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