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Filtering by: Creator Hirst, A. G. Remove constraint Creator: Hirst, A. G. Degree Name Master of Ocean Engineering (M.Oc.E.) Remove constraint Degree Name: Master of Ocean Engineering (M.Oc.E.)

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  • Hinged floating breakwater : theory and experiments

    Creator:
    Leach, Patrick A.
    Abstract:
    An analytical model is developed to examine the response and efficiency of a vertical rigid, hinged, floating breakwater. The boundary value problem describing the flow field yields a well-posed Sturm-Liouville problem which is solved by separation of variables for the velocity potentials. The equation of breakwater motion about the breakwater...
    Resource Type:
    Masters Thesis
    Full Text:
    potential in region I may be expressed as Ai g I = cosh K(z+h) exp(iKx) + A r g cosh K(z+h) exp(-iKx)w

  • Wave diffraction due to trenches and rubble

    Creator:
    Furukawa, Keizo
    Abstract:
    Two types of boundary element models are developed for the interaction of waves with trenches. The first type is for a two-dimensional domain in the horizontal plane and employs the linear long wave approximations. It is shown that appropriate selection of pit geometries leads to a significant reduction in wave...
    Resource Type:
    Masters Thesis

  • Dynamic response of an offshore structure to measured and simulated stochastic wave forces

    Creator:
    Grecco, Michael G.
    Abstract:
    The dynamic response of an offshore structure to measured and simulated stochastic wave forces is investigated. The theoretical nondeterministic analysis is performed in the frequency domain for a two-dimensional model. The ocean wave system is assumed to be a zero mean, stationary, ergodic Gaussian process described by a one-dimensional wave...
    Resource Type:
    Masters Thesis
    Full Text:
    Stochastic Wave Forces by Michael G. Grecco A THESIS submitted to Oregon State University in partial

  • The static and cyclic pullout behavior of plate anchors in fine saturated sand

    Creator:
    Petereit, Ralph A.
    Abstract:
    Anchors resistant to tensile loads are commonly used in civil engineering practice. Anchors in the marine environment are most frequently used for the mooring of vessels. Only recently, with the expansion of the offshore industry, has the need to develop more reliable anchor systems become necessary. Embedded plate anchors are...
    Resource Type:
    Masters Thesis
    Full Text:
    + rDF4 (3.18) where F4 = (l+sin) (IrSec)(1' (3l8a) = G/(C+rDtan) (a rigidity index) (3.l8.b) 34 G

  • Toward wave energy in Oregon : predicting wave conditions and extracted power

    Creator:
    Oskamp, Jeffrey A.
    Abstract:
    Knowledge of wave conditions in nearshore regions supports the development of ocean wave energy technology by providing wave climatology for device design considerations, and power output estimates. By modeling wave transformation over the continental shelf, wave conditions were predicted in nearshore regions where potential wave energy conversion sites are located....
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Jeffrey A. Oskamp for the

  • Forces on a transverse circular cylinder in a steady uniform flow near a plane boundary

    Creator:
    Hafen, Blaine
    Abstract:
    An experimental study was conducted to determine the hydrodynamic forces on smooth and roughened circular cylinders as influenced by a nearby plane boundary. The ambient flow was perpendicular to the cylinder and parallel to the boundary. Measurements were taken in a water channel and a wind tunnel to obtain the...
    Resource Type:
    Masters Thesis
    Full Text:
    ) (Date) Title: FORCES ON A TRANSVERSE CIRCULAR CYLINDER IN A STEADY, UNIFORM FLOW NEAR A PLANE BOUNDARY

  • Sand waves in a pristine estuary

    Creator:
    Baliga, B. R. (B. Ravindranath)
    Abstract:
    The stochastic and the Fourier theories for sand waves developed by Lee(11) and Hino(6), respectively, for unidirectional flows are extended in order to estimate the rate of sediment turnover (RST) under oscillatory flows in the South Slough estuary, Coos Bay, Oregon. Data were collected by a mechanical and a sonic...
    Resource Type:
    Masters Thesis
    Full Text:
    IN A PRISTINE ESTUARY Abstract approved: Redacted for Privacy Dr. Robert T. Hudspeth The

  • Wave forces on a horizontal circular cylinder near a plane boundary

    Creator:
    Wright, James Christopher
    Resource Type:
    Masters Thesis
    Full Text:
    prevent uplift currents due to 104.27 m 4 I ( o 465 4.21 A _ g m 11.17 9 7 _ C m 1 _ q ;17.11 Wave

  • Kinematics and return flow in a closed wave flume

    Creator:
    Ramsden, Jerald Day
    Resource Type:
    Masters Thesis
    Full Text:
    = .35 ...... 88 4.1.13 Time History (a) and Spectrum (b) of the Water Surface Elevation for T/h/g 10.04

  • Hydrodynamic forces on a horizontal cylinder under waves and current

    Creator:
    Teng, Chung-chu
    Abstract:
    By assuming the linear superposition principle to be valid, the hydrodynamic forces on a horizontal cylinder under waves and current are examined. In this study, towing a cylinder in waves is used to simulate a cylinder under waves and current. The experimental technique is proved valid through theoretical considerations and...
    Resource Type:
    Masters Thesis
    Full Text:
    ax w az Da' +I ..,. q = = u + wiDt = +uli+w-g 3t ax az =A+u -±U - +w at w ax ax w az (2.19