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Filtering by: Creator Yim, Solomon Remove constraint Creator: Yim, Solomon Degree Field Mechanical Engineering Remove constraint Degree Field: Mechanical Engineering

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  • Hydroelastic modeling of a wave energy converter using the arbitrary Lagrangian-Eulerian finite element method in LS-DYNA

    Creator:
    Meicke, Stephen A.
    Abstract:
    This thesis investigates the applicability of the finite element method to model wave energy converter (WEC) hydroelasticity using LS-DYNA. The proposed methodology uses the Arbitrary Lagrangian-Eulerian formulation to model Fluid-Structure Interaction (FSI) between the WEC and the fluid elements. This formulation allows for time-domain modeling of higher order effects such...
    Resource Type:
    Masters Thesis
    Full Text:
    γ0 are set to 1.979 and 1.4, respectively, as suggested by Zhang and Yim [12]. S2 and S3 are set

  • Performance Analysis of a Utility-Scale Wave Energy Converter

    Creator:
    May-Varas, Nicholas A.
    Abstract:
    A six degree of freedom (6DOF) point-absorber wave energy converter (WEC) called LUPA is being developed at Oregon State University. This research focused on analyzing a full- scale LUPA, called LUPA20, to answer the following questions: 1) How does a full-scale WEC perform due to various factors; 2) What are...
    Resource Type:
    Honors College Thesis
    Full Text:
    _____________________________________________________________________ Solomon Yim, Committee Member, representing Civil and Construction Engineering

  • The effects of ocean variability and breaking waves on wave energy converter reliability and survivability

    Creator:
    Brown, Adam
    Abstract:
    The reliability and survivability of a wave energy converter (WEC) is highly dependent on the variability and non-linearity of the ocean itself. Ocean variability occurs on many time scales. Climate variability occurs decade-to-decade, and year-to-year in the number and intensity of winter storms. Seasonal variation of wave height and period...
    Resource Type:
    Dissertation
    Full Text:
    to thank Doctors Robert Paasch, Belinda Batten, Annette von Jouanne, Solomon Yim, and Ean Amon, who

  • Numerical study of droplet formation with nozzle dynamics and multiple droplet impingement

    Creator:
    Sangplung, Saangrut
    Abstract:
    Droplet formation from a flexible nozzle plate driven by a prescribed-waveform excitation of a piezoelectric is numerically investigated using a computational fluid dynamics (CFD) model with the VOF method. The droplet generator with a flexible nozzle plate, which is free to vibrate due to the pressure acting on the plate,...
    Resource Type:
    Dissertation
    Full Text:
    graduate committee members: Dr. Solomon C. Yim, Dr. Deborah V. Pence, Dr. Vinod Narayanan, and Dr. Brain

  • Risk-based negotiation for collaborative system design in a distributed environment

    Creator:
    Qiu, Yuming
    Abstract:
    Risk is a crucial decision factor besides traditional cost and performance during collaborative decision making in a distributed environment. Three main challenges exist: 1) stakeholders' different perspectives and/or diverse cultures can lead to inconsistent risk probability evaluations; 2) risk consequence is hard to be quantified in concrete unit; 3) risk...
    Resource Type:
    Dissertation

  • The wave energy resource of the US Pacific Northwest

    Creator:
    Lenee-Bluhm, Pukha
    Abstract:
    The substantial wave energy resource of the US Pacific Northwest (i.e. off the coasts of Washington, Oregon and N. California) is assessed and characterized. Archived spectral records from ten wave measurement buoys, operated and maintained by the National Data Buoy Center and the Coastal Data Information Program, form the basis...
    Resource Type:
    Masters Thesis
    Full Text:
    committee members, Dr. H. Tuba Ozkan- Haller, Dr. Solomon Yim, Dr. Joe Zaworski and Dr. Bart Eleveld, for

  • A study of cavitation instabilities in solids

    Creator:
    Puttapitukporn, Tumrong
    Abstract:
    Cavitation instabilities in elastic-plastic solids under spherically-symmetric and axisymmetric loadings were investigated using the finite element method. Both quasi-static and dynamic analyses were used to solve these problems. In the quasi-static analyses, we investigated a cavitation instability in elastic/perfectly-plastic, linear hardening elastic-plastic, power hardening elasticplastic, and constrained silver materials. Here,...
    Resource Type:
    Dissertation
    Full Text:
    ., Professor Yim, Solomon C. S., Associate Professor Paasch, Robert K. and Associate Professor Gupta, Rakesh

  • Transient nonlinear deformations of viscoelastic membranes

    Creator:
    Jenkins, Christopher H. M.
    Resource Type:
    Dissertation
    Full Text:
    . Kennedy, and Dr. Roy C. Rathja - each has remained both mentor and friend. Thanks also to Dr. Solomon C.S

  • Time-domain modeling of heaving point absorber wave energy converters, including power take-off and mooring

    Creator:
    Ruehl, Kelley
    Abstract:
    Wave energy conversion is still in its infancy, and in order for it to become a commercially viable technology, developers, investors and utilities need to estimate a Wave Energy Converter's (WEC's) performance for the wave climate of a potential installation site. With the goal of estimating a design's power output...
    Resource Type:
    Masters Thesis
    Full Text:
    . Solomon Yim for providing me with a fundamental understanding of offshore structural dynamics

  • Predicting deep water breaking wave severity

    Creator:
    Hovland, Justin
    Abstract:
    Ocean Wave Energy Converters (WECs) operating on the water surface are subject to storms and other extreme events. In particular, high and steep waves, especially breaking waves, are likely the most dangerous to WECs. A method for quantifying the breaking severity of waves is presented and applied to wave data...
    Resource Type:
    Masters Thesis