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 13 of 13 for “"3D numerical models"”.
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The origin of the assymetry in the Iceland hotspot along the Mid-Atlantic ridge from continental breakup to present-day
… We investigate causes of this asymmetry with 3D numerical models that simulate a mantle plume interacting with the evolving ridge system. Modeled maps of crustal thickness and plume influence indicate that asymmetrical influence along the ridge system is partially caused by the asymmetric …
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Impact of Stress-field Changes Induced by Hydraulic Fracturing on Subsurface Fault Stability
… along the fault and even seismicity events.;3D numerical models are developed based on finite element method. The comparison between analytical and numerical solutions indicates an excellent agreement has been achieved, which certificates the applicability of the numerical models to complex …
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Interactions between mantle plumes and mid-ocean ridges : constraints from geophysics, geochemistry, and geodynamical modeling
… this observation, Chapter 2 presents a series of 3D numerical models designed to quantify the sensitivity of along-axis plume-driven mantle flow to transform offset length, spreading rate, and mantle viscosity structure. The calculations illustrate that long-offset transforms in ultra-slow …
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Interactions between mantle plumes and mid-ocean ridges : constraints from geophysics, geochemistry, and geodynamical modeling
… this observation, Chapter 2 presents a series of 3D numerical models designed to quantify the sensitivity of along-axis plume-driven mantle flow to transform offset length, spreading rate, and mantle viscosity structure. The calculations illustrate that long-offset transforms in ultra-slow …
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Calculation of electrical conductivity and electrothermal analysis of multilayered carbon reinforced composites: application to damage detection
… developing temperature field to the respective numerically calculated, c) through 3D numerical models which approximate the analytical solution of the 2D domain problem. Moreover using the finite difference method, certain electrothermal models were developed in order to study the temperature …
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Astrometria, efemérides e ocultações estelares de satélites irregulares e corpos do sistema solar exterior
… of Dr. Valéry Lainey, an independent code of numerical integration of orbits of planetary satellites intended to ephemeris generation. This code allows our group to be more independent, because nowadays this is developed only by french and american groups. All of the phases of a stellar …
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Numerical Modeling of Geologic Carbon Dioxide Storage in Faulted Siliciclastic Settings
… of CO₂ migration made with physics-based numerical models. A key contribution of this work is the quantification of uncertainty on fault petrophysical properties and modeling of flow within clay-smeared faults, which play a central role on CO₂ storage effectiveness and safety. We start by …
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Spatial Variability in Seepage from Unlined, Open Channels
… two-, or even three-dimensional (1D, 2D, or 3D) numerical models that combine heat transport and fluid flux equations. This work compared the advantages and limitations of one- vs. two-dimensional numerical models and the applicability of the Stallman analytical solution for use in …
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Acoustic source localization in 3D complex urban environments
… of source localization in three-dimensional (3D) realistic urban environments. Two different localization techniques are developed to solve this problem: a) Beamforming using a few microphone phased arrays in conjunction with a high fidelity model and b) Fingerprinting using many dispersed …
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Understanding The Factors Influencing Contaminant Attenuation And Plume Persistence
… on mass-removal efficiency. Three-dimensional (3D) numerical models were used to simulate the impact of different well-field configurations on pump-and-treat mass removal. The relationship between reduction in contaminant mass discharge (CMDR) and mass removal (MR) was used as the metric to …
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A Geodynamic Investigation of Magma-Poor Rifting Processes and Melt Generation: A Case Study of the Malawi Rift and Rungwe Volcanic Province, East Africa
… Model 2012 to constrain three-dimensional (3D) numerical models of lithosphere-asthenosphere interactions, which indicate ~3 cm/yr asthenospheric upwelling beneath the thin lithosphere (115-125 km) of the northern Malawi Rift and the RVP from lithospheric modulated convection (LMC) that is …
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Influence of faults on the 3D coupled fluid and heat transport
… und in den umgebenden Gesteinen. Dazu wurden 3D Finite Elemente Simulationen des gekoppelten Fluid und Wärmetransports für synthetische sowie reale Modelszenarien auf unterschiedlichen Skalen durchgeführt. Um den Einfluss einer schräg einfallenden Störung systematisch durch die schrittweise …
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Numerical investigations of flow behavior and energy losses in open channel junctions
… This thesis presents results from a detailed numerical investigation of the hydrodynamics of open-channel junctions, with emphasis on adequately predicting energy loss due to junction. Energy losses in junctions is an important factor to be considered when designing sewer pipe network so that …