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 83 for “"Equations of state"”.
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Nucleation theory using equations of state
… thesis is primarily concerned with the accuracy of theories of vapor-to-liquid nucleation based on equations of state of real fluids."--Introduction, page 1.
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Electron equations of state during magnetic reconnection
Magnetic reconnection is a rapid reconfiguration of the magnetic field lines in a plasma that converts stored magnetic energy into particle energy in a wide range of environments. It is a source of energetic particles in the solar corona and wind, and in planetary magnetospheres. Disruptive …
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Finite-strength shock propagation for alternative equations of state
A systematic method of making calculations for finite-strength, i.e., nonself-similar, shock waves is developed. Using concepts of Lie groups, the invariance properties of the spherically symmetric equations of gasdynamics are determined and used to construct invariant equations of state. The …
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Transport property equations-of-state for reservior fluids and dense gas mixtures
Quantitative knowledge of viscosity and thermal conductivity at reservoir temperature and pressure of interest is required for many engineering problems that involve heat and mass transfer or pressure drop relationship. Direct experimental viscosity and thermal conductivity data are usually not …
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Three Problems Involving Compressible Flow with Large Bulk Viscosity and Non-Convex Equations of State
… examined three problems involving steady flows of Navier-Stokes fluids. In each problem non-classical effects are considered. In the first two problems, we consider fluids which have bulk viscosities which are much larger than their shear viscosities. In the last problem, we examine steady …
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Comparison of binary vapor-liquid equilibrium and enthalpy prediction by two parameter and eleven parameter equations of state
Includes bibliographical references.
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Equations of state of oxides and silicates and new data on the elastic properties of spinel, magnetite, and cadmium oxide.
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Sciences, 1970.
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Thermodynamische Untersuchungen von Phasengleichgewichten in komplexen Systemen mit assoziierenden Komponenten
The knowledge of phase equilibrium is essential for the planning and realisation of separation processes in chemical engineering. In this work an equipment for measurement of precise isothermal vapour–liquid equilibria (VLE) using the dynamic method was developed. The pool of experimental data for …
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Neutron Star Models in Alternative Theories of Gravity
<p>We study the structure of neutron stars in a broad class of alternative theories of gravity. In particular, we focus on Scalar-Tensor theories and <italic>f(R)<italic> theories of gravity. We construct static and slowly rotating numerical star models for a set of equations of state, including a …
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Correlation and prediction of solubility of low vapor pressure solids in supercritical fluids
Binary solubility data of hydrocarbon solids in supercritical fluids were correlated using the compressed gas model. Data included in the analysis were for solubilities of binary mixtures of napthalene, 2,3- and 2,6-dimethylnapthalene, benzoic acid, phenanthrene, anthracene and pyrene in both …
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Wave Tracking in Complex Geometries
A new equation of state (EOS) for a reactive, non-ideal explosive was developed to be used in the explosive applications. The new EOS was based on the earlier work of W. C. Davis, who developed equations of state for the reactants and products separately. The new EOS presents a plausible way to …
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Relativistic neutron stars in general relativity and fourth order gravity
… arising from stiffness in the models of nonrotating, spherically symmetric single neutron star systems. The work deals with two distinct problems, each of which involves a stiff system of differential equations. In each case, we deal with stiffness by employing an IMEX Runge-Kutta …
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Covariant perturbations in f (R) - gravity of multi-component fluid cosmologies
We study the evolution of scalar cosmological perturbations in the 1+3 Covariant Gauge-Invariant formalism for generic f(R) theories of gravity. Working in the energy frame of the total matter, we give a complete set equations describing the evolution of matter and curvature fluctuations for a …
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Magnetically torqued thin accretion disks
… thin disk model as a basis and modify the disk equations with a magnetic torque from the central neutron star. Disk solutions are computed for a range of neutron star magnetic fields. We also investigate the effect of different equations of state and opacities on the disk solutions. We show that …
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Study of the role of differential diffusion and equation of state on the features of stably stratified turbulent channel flow using direct numerical simulations
… and salinity (salt content) through an equation of state (EoS). The molecular diffusion of the temperature and salinity in such flows differ substantially, which leads to the presence of a differential diffusion phenomenon. This furthers the complexity of stratified turbulence, where the density …
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Multiphase extensions to ODE models for detonations of non-ideal explosives
… model and the straight streamline approach of Watt et al., are extended to a multiphase system of equations. These multiphase equations, with realistic equations of state, are used to better capture the heterogeneities in non-ideal explosives used in mining applications. Streamline ODE …
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Representing liquid-vapor equilibria of Ternary systems using neural networks
… on neural networks for efficiently interpolating equations of state (EOS) for liquid-vapor equilibria of ternary mixtures. We investigate the performance of neural networks both when experimental data are available and when only simulation data are available. Simulation data are obtained from …
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The Nature of Asymmetry in Fluid Criticality
This dissertation deals with an investigation of the nature of asymmetry in fluid criticality, especially for vapor-liquid equilibra in one-component fluids and liquid-liquid equilibra in binary fluid mixtures. The conventional mixing of physical variables in scaling theory introduces an asymmetric …
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Computational modeling of advanced, multi-material energetic materials and systems
The aim of this thesis is to develop and implement a robust reactive simulation tool that can aid in the design of explosive devices by numerically investigating the reactive mechanism of different explosive materials; study how detonation waves travel through them and determine how to initiate …
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