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  • Analysis of fourth order numerical methods for the simulation of electromagnetic waves in dispersive media

    Creator:
    Henderson, Scott Edward
    Abstract:
    In this thesis, we investigate the problem of simulating Maxwell's equations in dispersive dielectric media. We begin by explaining the relevance of Maxwell's equations to 21st century problems. We also discuss the previous work on the numerical simulations of Maxwell's equations. Introductions to Maxwell's equations and the Yee finite difference...
    Resource Type:
    Masters Thesis
    Full Text:
    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 4.1. Comparison of Numerical Methods for Electromagnetic Wave Propagation in Lorentz Media

  • Operator splitting methods for Maxwell's equations in dispersive media

    Creator:
    Keefer, Olivia A.
    Abstract:
    Accurate modeling and simulation of wave propagation in dispersive dielectrics such as water, human tissue and sand, among others, has a variety of applications. For example in medical imaging, electromagnetic waves are used to interrogate human tissue in a non-invasive manner to detect anomalies that could be cancerous. In non-destructive...
    Resource Type:
    Masters Thesis
    Full Text:
    for Maxwell’s equations in dispersive media of Debye type which are used to model wave propagation in

  • Dynamics of the nearshore wave bottom boundary layer

    Creator:
    Foster, Diane Lyn
    Abstract:
    This thesis presents an examination of the nearshore wave bottom boundary layer under conditions of significant sediment response. Using both field observations and simple models, the response of the bottom boundary layer to random waves is shown to have a complex behavior. First, the linearized wave bottom boundary layer governing...
    Resource Type:
    Dissertation
    Full Text:
    structure of the cross-shore velocity under an arbitrary wave field. Model predictions of the bed shear

  • The reflection, transmission and scattering of internal waves at ocean fronts

    Creator:
    Stabeno, Phyllis Jean
    Resource Type:
    Dissertation
    Full Text:
    model of the reflection transmission, scattering and production of internal gravity wave energy at an

  • Shear waves in a circular wave basin

    Creator:
    Berkery, Lynn A.
    Abstract:
    Shear waves, which are instabilities of the longshore current, are of interest to nearshore research because they can act as a cross-shore mixing mechanism for the current. The best method to study them is in a controlled environment, such as circular wave tank where continuous longshore currents can be generated....
    Resource Type:
    Masters Thesis

  • Numerical computation of free surface water flow

    Creator:
    Kuhnert, Jorg
    Abstract:
    The present thesis is a report of investigations on a model for computing the water flow in the wave tank of the OSU Wave Laboratory. A wave board, established at one end of the 100 m long, 4 m wide and 6 m deep wave tank, produces water waves by...
    Resource Type:
    Masters Thesis

  • Field validation of a nearshore circulation model for alongshore-nonuniform flows

    Creator:
    Wilson, Gregory W.
    Abstract:
    We investigate, theoretically and experimentally, the problem of modeling depth-integrated (2DH) surf zone circulation on an alongshore-nonuniform natural beach, with waves approaching from an arbitrary angle. An approximate theoretical model is developed, which captures the important effect of advection in the alongshore dynamics, and shows that a nondimensional parameter Re[subscript]s...
    Resource Type:
    Masters Thesis
    Full Text:
    Wave Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 3.2.2 Circulation Model

  • Immune radio architecture for platform interference

    Creator:
    Alban, Eduardo
    Abstract:
    The decrease of switching times accompanied by the corresponding increase of clock speeds and data rates, contributes to improve the overall system computational performance. At the same time, they also affect wireless communications due to an increment in the emissions of electromagnetic radiation on the radio bands. In this dissertation...
    Resource Type:
    Dissertation
    Full Text:
    of electromagnetic radiation on the radio bands. In this dissertation we have studied the sources

  • Modeling shallow-water hydrodynamics : rotations, rips, and rivers

    Creator:
    Long, Joseph W.
    Abstract:
    Hydrodynamic models are used as a diagnostic tool to understand the temporal variability of shallow-water processes that are difficult to completely resolve with traditional field measurements. For all simulations, modeled quantities are qualitatively or quantitatively compared with available measurements to gain confidence in conclusions derived from the modeled results. In...
    Resource Type:
    Dissertation
    Full Text:
    . The model and data are in good agreement for all wave conditions during the month and estimated model

  • Fractal solutions to the long wave equations

    Creator:
    Ajiwibowo, Harman
    Abstract:
    The fractal dimension of measured ocean wave profiles is found to be in the range of 1.5-1.8. This non-integer dimension indicates the fractal nature of the waves. Standard formulations to analyze waves are based on a differential approach. Since fractals are non-differentiable, this formulation fails for waves with fractal characteristics....
    Resource Type:
    Dissertation
    Full Text:
    6.2 THE RE-REFLECTED WAVE MODEL ................................................. 137 7. CONCLUSION