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 “"mesoscale modeling"”.
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Atomistic and mesoscale modeling of dislocation mobility
… metals, with emphasis on the atomistic-mesoscale coupling. Contributions are made in both methods development and mechanistic understanding of dislocation mobility. For atomistic studies of defects embedded in a mesoscale surrounding, we have given rigorous treatments of two types of …
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Mesoscale Modeling of Phase Behavior in Thin Films of Cylinder-Forming ABA Block Copolymers
In this thesis modeling results on structure formation in thin films of cylinder-forming block copolymers are presented and discussed. The computational study of the equilibrium phase behavior in thin films is complemented by detailed comparison with a real experimental system. Additionally, the …
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Modeling the mechanical behavior of amorphous metals by shear transformation zone dynamics
A new mesoscale modeling technique for the thermo-mechanical behavior of amorphous metals is proposed. The modeling framework considers the shear transformation zone (STZ) as the fundamental unit of deformation, and coarse-grains an amorphous collection of atoms into an ensemble of STZs on a mesh. …
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Modeling of Thermal Transport Properties in Metallic and Oxide Fuels
… fuel is also coupled with finite element-based mesoscale modeling technique to calculate the effective thermal conductivities of the U-Zr heterogeneous microstructures. For a U-10wt.%Zr (U-10Zr) fuel at temperatures below the ɑ phase transition temperature, the dominant microstructures are …
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Atomistics of defect nucleation and mobility : dislocations and twinning
Multiscale materials modeling has emerged in recent years as a significant concept and the only viable approach to understand the mechanical response of materials by linking modeling research at different length scales and time scales, including quantum mechanics, atomistics modeling, mesoscale …
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Applications of a novel many-component Lattice Boltzmann simulation
… particles; blood is an example. However, the modeling of such materials represents a considerable challenge to established methods such as computational fluid dynamics (CFD). In this PhD project, work has been undertaken to extend the lattice Boltzmann method (LBM), and enable it to represent …
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Application of the Weather Research and Forecasting (WRF) Model to Simulate a Squall Line: Implications of Choosing Parameterization Scheme Combinations and Model Initialization Data Sets
… of accurate forecasting for public safety. Mesoscale Modeling plays an important role in any forecast of a potential squall line. The focus of this study was to examine the performance of several parameterization scheme combinations in the Weather Research and Forecasting Model version three …
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MESOSCALE MICROSTRUCTURE EVOLUTION, RELIABILITY AND FAILURE ANALYSIS OF HIGH TEMPERATURE TRANSIENT LIQUID PHASE SINTERING JOINTS
… effect of each factor. In this work, phase field modeling of the microstructure of TLPS materials fabricated by different processing methods will be conducted. Phase-field modeling (PFM) is a powerful thermodynamic consistent method in mesoscale modeling that simulates the evolution of …
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Toward assessing the effects of aerosols on deep convection: a numerical study using the WRF-Chemistry model
… to influence each other’s evolution within a mesoscale modeling framework. Provided that the model physics are robust, this framework allows the feedbacks between aerosol chemistry, cloud physics, and dynamics to be investigated. This study focuses on the effects of aerosols on meteorology, …
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Multi-scale interactions leading to tropical cyclogenesis in sheared environments
… dropsonde soundings, and satellite data for mesoscale case studies, reanalyses data for synoptic and climatological analysis, and extensive ensemble mesoscale modeling for controlled experiments. First, this dissertation presents a detailed observational analysis for multi-scale processes …
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Deriving Structural Insights About Mesoscale Chromatin Folding Using Coarse-Grained Oligonucleosome Modeling
… impact chromatin organization on this scale–the mesoscale 2) to interpret mesoscale sequencing assay data and 3) to demonstrate that spatially-correlated cleavage, not protein protection, primarily drives the shape of the distribution of DNA fragment lengths resulting from ionizing-radiation …
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The role of morphology in surgical mesh performance: experimental and computational insights
L'abstract è presente nell'allegato / the abstract is in the attachment