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  • Microscale thermal management using membrane vapor extraction

    Creator:
    Apreotesi, Mario A.
    Abstract:
    With the miniaturization of microelectronics and increase of processor speeds in the last few decades, thermal management is drastically affecting overall packaging and system capabilities. Due to the special needs introduced, research focusing on microscale cooling has increased. This study combines the positive characteristics of single- and two-phase flows in...
    Resource Type:
    Honors College Thesis
    Full Text:
    . Apreotesi for the degree of Honors Baccalaureate of Science in Mechanical Engineering presented on June 2

  • Brake-based wheel speed control design of a rear wheel open differential vehicle

    Creator:
    Jeon, Eli
    Abstract:
    A brake-based wheel speed control system for a rear-wheel drive vehicle is developed and simulated in this thesis. The OSU mini-Baja vehicle team will use this study in the development and implementation of a similar system for upcoming competitions. Vehicle submittals must differ to a specified degree from previous year’s...
    Resource Type:
    Masters Thesis
    Full Text:
    THESIS OF Eli Jeon for the degree of Master of Science in Mechanical Engineering presented on June

  • Human gait analysis by gait pattern measurement and forward dynamic model combined with non linear feedback control

    Creator:
    Ko, Seung-uk
    Abstract:
    Normal gait of human is believed to be an adapted motor control result of optimal behavior of individual. Normal gait would be altered by aging or injury without being perceived. Subtle changes in gait which is not easy to detect, can cause many serious problems including joint pains and even...
    Resource Type:
    Dissertation
    Full Text:
    DISSERTATION OF Seung uk Ko for the degree of Doctor of Philosophy in Mechanical Engineering presented

  • Effects of a thin, flexible nozzle on droplet formation and impingement

    Creator:
    Hawke, Shane R.
    Abstract:
    The droplet formation process in the vicinity of the nozzle exit and the behavior of a spreading droplet during impingement on a smooth glass surface were studied. Two nozzle geometries were tested. The first case was a stiff stainless steel nozzle plate 0.787 mm thick. The second case was a...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Shane R. Hawke for the degree of Master of Science in Mechanical

  • Optimal soaring by a small autonomous glider

    Creator:
    Kyle, Jason A.
    Abstract:
    Extending the flight time of an autonomous unmanned air vehicle by soaring is considered. A suboptimal controller is developed and successful static soaring is demonstrated with a 6 degree of freedom glider model. Altitude gain rates of between ¼ and ½ m/s are achieved with this simple implementation. A hybrid...
    Resource Type:
    Dissertation
    Full Text:
    ABSTRACT OF THE DISSERTATION OF Jason A. Kyle for the degree of Doctor of Philosophy in Mechanical

  • Nonlinear model reduction using the group proper orthogonal decomposition method

    Creator:
    Dickinson, Benjamin T.
    Abstract:
    Proper orthogonal decomposition (POD) in conjunction with the Galerkin projection has been used as a model reduction technique for the tractable real-time control of high-dimensional systems. While POD based model reduction may improve the tractability of high-dimensional models, the nonlinear POD based model may be impractical for control due to...
    Resource Type:
    Masters Thesis
    Full Text:
    Master of Science in Mechanical Engineering presented on May 9, 2007. Title: Nonlinear Model Reduction

  • Effect of PZT driving waveform and frequency on meniscus shape and dropon-demand droplet formation parameters

    Creator:
    Yang, Guozhong
    Abstract:
    For piezoelectric stack (PZT) driven droplet generator, the driving waveform and driving frequency effect on liquid filament shape and droplet characteristics have been experimentally studied. The experimental study was based on a PZT driven droplet generator with known geometric design parameters and working fluid properties. A lumped-element-model (LEM) constructed to...
    Resource Type:
    Dissertation
    Full Text:
    DISSERTATION OF Guozhong Yang for the degree of Doctor of Philosophy in Mechanical Engineering Presented

  • Product innovation for interdisciplinary design under changing requirements : mechanical design for the Bug ID project

    Creator:
    Peterson, Clint W.
    Abstract:
    It is crucial for the development of high quality products that design requirements are identified and clarified as early as possible in the design process. In many projects the design requirements and design specifications evolve during the project cycle. Shifting needs of the customer, advancing technology, market considerations and even...
    Resource Type:
    Masters Thesis
    Full Text:
    degree of Master of Science in Mechanical Engineering, presented on April 30, 2007. Title: Product

  • Engineering design knowledge management and capture using a process overview document

    Creator:
    Zarins, Andis M.
    Abstract:
    An experiment was conducted to examine the possible impact of an engineering design and problem solving process overview document on knowledge management and capture. A process overview document was first created. Next, two multi-disciplinary design teams worked over a two-week span to develop concepts to address a problematic opportunity. One...
    Resource Type:
    Masters Thesis
    Full Text:
    2 AN ABSTRACT OF THE THESIS OF Andis M. Zarins for the degree of Master of Science in

  • Microscale thermal management utilizing vapor extraction from a fractal-like branching heat sink

    Creator:
    Apreotesi, Mario A.
    Abstract:
    It is hypothesized that increases in pressure drop due to vapor generation during boiling in microchannels can be reduced by extraction of vapor at its point of inception. Ultimately, this local vapor extraction decreases the pressure drop required to drive the flow through a fractal-like branching, microchannel flow network within...
    Resource Type:
    Masters Thesis
    Full Text:
    degree of Master of Science in Mechanical Engineering presented on June 8, 2007. Title: Microscale