# Browse by Subject "Physics, Fluid and Plasma"

• (1993)
The propagation of acoustic waves in porous media is of interest in a variety of areas, including oil well logging, the seepage of contaminants into ground water supplies, and the flow of fluids in packed beds. The aim of ...

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• (1987)
D-T fusion-born alpha particles are mirror-confined in the central cell of a tandem mirror reactor. The resulting anisotropic loss-cone distribution of the alpha particles in velocity space is capable of destabilizing low ...

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• (1989)
This dissertation describes the design, construction, and proof-of-principle verification of a neutral hydrogen flux detection system, based on an ECRH discharge as the neutral flux ionizer. The significant features of the ...

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• (1974)

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• (1994)
The high voltage spark has been used many years for emission spectrochemical analysis. Yet, spark studies have produced only heuristic descriptions of spark analyte sampling and excitation. It has been dogma in the analytical ...

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• (1989)
A thin layer of a single-component Boussinesq fluid, contained between two rigid horizontal plates of low thermal conductivity, is cooled from above and heated from below. In the steady-static state, a heat flux traverses ...

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• (1987)
The invariance properties of various sets of magnetohydrodynamic (MHD) equations are studied using techniques from the theory of differential forms. Equations considered include the ideal MHD equations in different geometries ...

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• (1991)
The purpose of this thesis was to explore computationally the three dimensional hydrodynamics of extragalactic radio jets. This entailed putting together a large number of numerical tools before such simulations could be ...

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• (1992)
Coating flows have many very important applications in engineering. The first part of this thesis deals with gravity-driven reacting coating flows down an inclined plane. When the reaction activation energy is large and ...

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• (1989)
This thesis deals with the theory of the primary nucleation and subsequent expansion of the superfluid $\sp3$He-B phase in the metastable, hypercooled A phase. An overview of the theory of dynamical phenomena in Fermi ...

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• (1991)
In order to model liquid-metal flows in self-cooled liquid-lithium blankets for magnetic-confinement fusion reactors, liquid metal flows in rectangular ducts with thin conducting walls have been treated by combining ...

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• (1991)
Low pressure optically triggered pseudosparks, or Back-Lit Thyratrons (BLT), are inherently multidimensional transient devices. The method employed to model electron transport in such devices is therefore problematic. A ...

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• (1989)
A new vortex method for simulating two-dimensional buoyancy-driven flows is presented. This Lagrangian method utilizes a discrete representation of the known density field along with the vorticity transport equation and ...

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• (1992)
In this thesis we address three problems associated with the mass flow and orbital hydrodynamics of $\sp3$He-A. The first concerns the form of the T = 0 mass current in local equilibrium; the second is a paradox associated ...

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• (1992)
The impulse approximation and the related concept of the scaling of the dynamic structure function S(k,$\omega$) at large k and $\omega$ have played a dominant role in the analysis of the deep inelastic neutron scattering ...

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• (1993)
Relativistic Vlasov-Boltzmann kinetic equations are constructed from quantum field theory for scalar bosons and Dirac fermion fields. Lie's principle of differential invariance is extended to the case of non-linear ...

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• (1989)
The Faraday shield of an ion cyclotron resonant heating (ICRH) antenna has been identified as a local source of impurities during high-power ICRH experiments on confinement devices. The understanding of the plasma sheath ...

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• (1991)
Glow discharges are often contaminated by particulates resulting from gas phase nucleation or sputtering of surfaces in contact with the plasma. If these particulates are sufficiently large, they will negatively charge and ...

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• (1991)
In this thesis I will discuss the effects of shear flow on the Isotropic-Nematic phase transition in liquid crystals. Shear flow has dramatic orienting effects on the rod-like constituents of nematic liquid crystals, with ...

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• (1972)

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