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  • The effect of void distribution on the Hugoniot state of porous media

    Creator:
    Creel, Emory Myron Willett
    Abstract:
    Shocked porous granular material experiences pressure dependent compaction. D. John Pastine introduced a model in which the degree of compaction is dependent on the pressure induced by the shock wave, the shear strength of the material, and the distribution of void sizes. In the past, the model could only be...
    Resource Type:
    Masters Thesis
    Full Text:
    orientations. In fact, any attempt to physically model a shock wave moving through a porous material very

  • Parameters affecting mechanical collisions

    Creator:
    Aum, Ho Sung
    Abstract:
    Even though the elastic deformations that occur during the impact of colliding bodies may be small in comparison to their actual dimensions, they play an important role in mechanical collisions. During the time the bodies are in contact, elastic, friction, and inertia properties combine to produce a complex variation of...
    Resource Type:
    Dissertation
    Full Text:
    impulse and velocity changes that occur during contact. However, a considerably-simplified model captures

  • 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

  • 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

  • The nonlinear wavemaker problem

    Creator:
    Owen, Amy M.
    Abstract:
    The two dimensional wavemaker problem on a finite domain is derived for nonlinear waves. A numerical method based on the method of lines is developed and applied to two test problems, the nonlinear surface pressure distribution problem and the nonlinear full-flap wavemaker problem. The solutions yield information about the fluid...
    Resource Type:
    Masters Thesis
    Full Text:
    mathematics, a mathematical model must first be made. The accuracy of the computed results depend on how