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Filtering by: Creator Özkan-Haller, H. Tuba Remove constraint Creator: Özkan-Haller, H. Tuba Degree Field Mechanical Engineering Remove constraint Degree Field: Mechanical Engineering

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  • 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

  • Numerical and Analytical Modeling of Temperature Evolution in Laser Processing of Materials

    Creator:
    Ball, Stefan R.
    Abstract:
    The ultimate goal of this work is to analyze and compare two predictive models of thermal profile in laser processing of materials. An analytical method that uses closed-form equations to represent a geometric model of a laser heat source will be contrasted with a commercial computational fluid dynamics code that...
    Resource Type:
    Masters Thesis
    Full Text:
    speed of the heat source to the medium, 𝑇 is temperature, 𝜌 is density, 𝑘 is conductivity, ℎ is

  • 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
    Full Text:
    of gravity (m/s2) h Water depth (m) H Wave height (m) Hm0 Spectrally derived significant wave

  • Development of a Cartesian-grid-based solver for an oscillatory boundary layer over a rough wall

    Creator:
    Skitka, Joseph M.
    Abstract:
    Predominant models for predicting rates of sediment transport face acute shortcomings when applied to coastal boundary layers. This is due to a neglect of the web of stochastic variables governing the rate of sediment dislodgement. While stochastic models do exist, the parametric extent of their validity tends to be limited,...
    Resource Type:
    Masters Thesis
    Full Text:
    , my labmates Chaitanye Ghodke and Justin Finn, my masters thesis committee: Dr. Merrick Haller, Dr

  • Computational Study of Smoldering Combustion in Cellulose and Hemicellulose Mixtures

    Creator:
    Mulky, Tejas Chandrashekhar
    Abstract:
    Due to global warming wildland fires are increasing in frequency and severity. In the case of wildland fires, the major modes of combustion occur include smoldering combustion and flaming combustion. Smoldering combustion occurs most commonly in porous fuels like peat, forest duff, and woody fuels, which are available in abundance...
    Resource Type:
    Masters Thesis
    Full Text:
    (c, k, ρwet, and ∆H) was changed to its value for 70% moisture content while holding all other

  • DNS study of Particle-bed-Turbulence Interactions in Oscillatory Flows

    Creator:
    Ghodke, Chaitanya Deepak
    Abstract:
    Turbulent flows over rough surfaces are encountered in many engineering and geophysical applications. Flows of this nature, due to their increasing technological interests, have been a subject of rigorous investigation in recent years. Of the particular interest to the oceanographic community is the study of turbulent oscillatory flow over rough...
    Resource Type:
    Dissertation
    Full Text:
    , Prof. Chad Higgins and Prof. Merrick Haller for taking the time out to read this thesis, evaluate and

  • 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:
    absorber model is subject to an incident wave η(t), and is moored to the sea floor at water depth h

  • Learning based methods applied to the MAV control problem

    Creator:
    Salichon, Max
    Abstract:
    This thesis addresses Micro Aerial Vehicle (MAV) control by leveraging learning based techniques to improve robustness of the control system. Applying classical control methods to MAVs is a difficult process due to the complexity of the control laws with fast and highly non-linear dynamics. These methods are mostly based on...
    Resource Type:
    Dissertation
    Full Text:
    Robert Paasch, Dr Mike Bailey, and Dr Merrick Haller for their time and patience throughout this

  • Navigation and coordination of autonomous mobile robots with limited resources

    Creator:
    Knudson, Matthew D.
    Abstract:
    The use of autonomous robots in complex exploration tasks is rapidly increasing. Indeed, robots can provide speed and cost effectiveness in many tasks, as well as allow operation in environments that are hostile to humans. In this dissertation we: 1) provide two adaptive navigation algorithms; 2) develop a coordination mechanism;...
    Resource Type:
    Dissertation

  • A Framework to Evaluate the Risk of Human- and Component-related Vulnerability Interactions

    Creator:
    Irshad, Lukman
    Abstract:
    Most accidents and malfunctions in complex engineered systems are attributed to human error. However, a closer inspection would reveal that such mishaps often emerge as a result of poor design and human- and component-related vulnerabilities acting together. To fully understand and mitigate potential risks, the effects of such interactions between...
    Resource Type:
    Dissertation
    Full Text:
    Interactions Abstract approved: H. Onan Demirel Irem Y. Tumer Most accidents and malfunctions in complex