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 12 of 12 for “"High-resolution Simulations"”.
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Development of sea ice diagnostic tools for high-resolution simulations of the Climate Model Intercomparison Project (HiResMIP)
… thoroughly understand the role that horizontal resolution plays in the performance of climate modelling, this minor-dissertation describes the development and initial testing of a High-Resolution Sea Ice Diagnostics Toolset. This is designed to evaluate the influence increased horizontal …
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Gyrokinetic simulations of the nonlinear upshift of the critical density gradient for TEM turbulence in tokamak fusion plasmas
… in detail. Both linear and nonlinear, high resolution simulations were performed on massively parallel computers using the gyrokinetic code, GS2. The TEM nonlinear upshift is analogous to the Dimits Shift for ion temperature gradient driven (ITG) turbulence, but exists in the density …
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FORMATION AND DESTRUCTION OF ARCTIC THERMOHALINE STAIRCASES
… the Arctic. In particular, the presented high-resolution simulations explore the role of vertical shear associated with internal waves that are ubiquitous in the World Ocean. While previous investigations suggested that that the vertical shear could adversely affect staircases, this effect …
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Prediction of velocity distribution from the statistics of pore structure in 3D porous media via high-fidelity pore-scale simulation
… 3D porous media have not been established yet. High velocities are controlled by the formation of channels, while low velocities are dominated by stagnation zones. Recent studies have proposed phenomenological models for the distribution of high velocities including stretched exponential and …
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Stellar Spiral Structures in Realistic Dark Matter Haloes
… in realistic dark matter haloes with very high resolution simulations. I first study the impact of the shape of the dark matter haloes. I find that non-adiabatic changes to the dark matter halo shape, commonly found in cosmological simulations due to the assembly history of haloes, can …
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Black Hole Feedback in New Regimes: Modelling Dwarf Galaxies with Active Galactic Nuclei
… employing both isolated and cosmological simulations of dwarf galaxies. Firstly, I perform high-resolution simulations of isolated dwarf galaxies. In these simulations, the AGN has only a limited direct effect on star formation rates. There is, however, a significant effect on outflows, …
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The evolution and breakdown of submesoscale instabilities
… situ and numerical models now able to reach the resolution required to more fully capture them. Submesoscales are typified by horizontal spatial scales of O(1 − 10) km, vertical scales O(100) m and time-scales of O(1) day and are known to be associated with regions of high vertical velocity and …
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Evaluating the Role of Atmospheric Stability in Generating Asymmetrical Precipitation During the Landfall of Hurricane Florence (2018)
… causing convective rainbands to produce high amounts of precipitation along the coast of North Carolina. This study focuses on the relationship between precipitation asymmetries and atmospheric stability surrounding the tropical cyclone (TC) during the landfall period of a …
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Multiphase flow in porous media with phase transitions : from CO₂ sequestration to gas hydrate systems
… -brine-carbonate geochemical reactions. We use high-resolution simulations to examine the interplay between the density-driven convective mixing and the rock dissolution reactions. We find that dissolution of carbonate rock initiates in regions of locally high mixing, but that the geochemical …
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Investigating tropical cyclone impacts on MJO convection over the Indian Ocean
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-12-01
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Parameterizing PSD assumptions for remote sensing algorithms
… field campaigns collected data focusing in the high-latitudes (poleward of 45$^{\circ}$N): the Light Precipitation Validation Experiment (LPVEx) in Southern Finland from September to December 2010 and the GPM Cold-Season Precipitation Experiment (GCPEx) in Southern Ontario from January to March …
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Simulations of Galaxy Formation and Large Scale Structure
… matter in the Universe, it can be neglected in simulations in a first approximation. An initial density field can then be evolved under the sole influence of gravity. The result of such simulations may be combined with semi-analytic models for the baryonic physics associated with galaxy …