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 “"kinetic description"”.
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Effective kinetic description of non-equilibrium dynamics in small and large collision systems
… collisions are typically based on a hydrodynamic description that relies on equilibration. But accurate depic- tions of the early time period or of collisions with few produced particles may require a non-equilibrium description of the dynamics. In this work we describe equilibrium and …
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The effect of carbon dioxide on the growth and activity of leptospirillum ferriphilum
… gases. This study focuses particularly on the kinetic description of the microbial ferrous oxidation rate and the microbial growth rate of the Leptospirillum species under conditions where the supply of carbon dioxide is limited.
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Aspects of high field theory in relativistic plasmas
… the oscillations of relativistic plasmas using a kinetic description (Chapter II), a macroscopic fluid moment description (Chapter III), a quantum description (Chapter IV as a brief exploration) and Born-Infeld electrodynamics (Chapter V). Using a kinetic description, we examine the non-linear …
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Efficient numerical methods for solving the Boltzmann equation for small scale flows
… gaseous hydrodynamics may be described by a kinetic description, namely the Boltzmann equation. Currently, the prevalent method for solving the Boltzmann equation is a particle simulation method known as direct simulation Monte Carlo (DSMC). DSMC is very efficient for high-speed (more …
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Solar wind plasma : kinetic properties and micro-instabilities
The kinetic properties of ions in the solar wind plasma are studied. Observations of solar wind +H and +2He by the Faraday Cup instrument component of the Solar Wind Experiment on the Wind spacecraft show that these ions have magnetic field-aligned, convected, bi-Maxwellian velocity distribution …
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Discontinuous Galerkin solution of the Boltzmann equation in multiple spatial dimensions
… thesis focuses on the numerical solution of a kinetic description of small scale dilute gas flows when the Navier-Stokes description breaks down. In particular, it investigates alternative solution techniques for the Boltzmann equation typically used when the Knudsen number (ratio of molecular …
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Electrostatic Trapping as a Self-Consistent Phenomenon in Plasmas and other Collective Systems
… in the wave potential. These phenomena require a kinetic description i.e. a description in which the velocity distribution of the particles is taken into account. Trapping structures extend the areas in configuration space in which a plasma is unstable. The main argument and result of this work is …
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Low Energy Ion Beam Synthesis of Si Nanocrystals for Nonvolatile Memories - Modeling and Process Simulations
… synthesis is modeled with the help of a tailored kinetic Monte Carlo code that combines a detailed kinetic description of phase separation on atomic level with the required degree of abstraction that is necessary to span the timescales involved. Large ensembles of Si NCs were simulated reaching …
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Molecular design of interfacial modifications to alter adsorption/desorption equilibria at fluid-adjoining interfaces
The thermodynamics and mass transfer kinetics of adsorption and desporption at interfaces play vital roles in chemical analysis, separation processes, and many natural phenomena. In this work, computer simulations were used to design interfacial modifications to alter the physical processes of …
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Energy loss and equilibration of a highly energetic parton in QCD plasmas
… In this thesis, we describe the full in-medium kinetic and chemical equilibration of hard particles, using a linearized effective kinetic description of QCD at leading order. Since we include $2\leftrightarrow2$ elastic processes, collinear radiation, and the back-reaction of the jet …
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Weakly collisional electrostatic simulations for laboratory astrophysics applications
… the VFP equation must accurately capture both kinetic microscale and bulk uid motions. Therefore a valid hydrodynamical model was a useful resource to verify results against.<br/><br/>Chapter 5 presents the main theory behind the numerical approach taken to the ions in the simulation method …
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Phenotype-structured integro-differential models: derivation and qualitative analysis
L'abstract è presente nell'allegato / the abstract is in the attachment