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Filtering by: Creator El Ouahabi, A. Remove constraint Creator: El Ouahabi, A. Degree Field Mechanical Engineering Remove constraint Degree Field: Mechanical Engineering

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  • The Mira 2 Rocket Engine: Applying Lessons Learned for an Improved Iteration

    Creator:
    Dimas-Harms, Colton R.
    Abstract:
    In this paper, I present the design of Mira 2, a small-scale, liquid bipropellant rocket engine, with a specific focus on its oxidizer-centered pintle injector. Building upon the valuable lessons and insights gained from the empirical testing of its predecessor, Mira 1, the Mira 2 engine incorporates several improvements and...
    Resource Type:
    Capstone Project
    Full Text:
    Niemeyer In this paper, I present the design of Mira 2, a small-scale, liquid bipropellant rocket engine

  • A study of adiabatic and diabatic flow boiling in parallel microchannels and fractal-like branching microchannels

    Creator:
    Daniels, Brian J.
    Abstract:
    A one-dimensional numerical model has been developed to study diabatic and adiabatic flow boiling in microchannels. This model accounts for developing flow effects and variable property effects. The model uses correlations for void fraction and two-phase multipliers found in the literature. The model has been used to study the performance...
    Resource Type:
    Dissertation
    Full Text:
    presented on September 10, 2008. Title: A Study of Adiabatic and Diabatic Flow Boiling in Parallel

  • Modeling and control of a biologically inspired compliant structure

    Creator:
    Ray, Cody W.
    Abstract:
    We hypothesize that the extraordinary maneuverability and efficiency of bats in flight are in part due to the compliant nature of their wing structures. We utilize the parameters of bat bones measured by biologists to create a biologically inspired model of a flapping system consisting of a rotating hub actuator...
    Resource Type:
    Masters Thesis
    Full Text:
    0.2 Time (s) H ub A ng ul ar V el oc ity ( ra di an s/ s) (a) Aluminum 0 1 2 3 4 0 0.05

  • A study of laser generated Rayleigh and Lamb waves in graphite/epoxy composites

    Creator:
    Park, Heeyong
    Abstract:
    The application of laser generated ultrasonics was first demonstrated in the mid-seventies and has shown good potential when applied to isotropic materials. However, its use with composite materials is still in the early stages of development. This study explores the potential for application of laser generated Rayleigh and Lamb waves...
    Resource Type:
    Dissertation
    Full Text:
    30 which is less than EL . Therefore, the root L3 can be found by a suitable search algorithm for

  • Fully developed laminar natural convection in a vertical parallel plate channel with symmetric uniform wall temperature

    Creator:
    Willie, Robert H.
    Abstract:
    Described in this thesis is an investigation of the fully developed natural convection heat transfer in a vertical channel formed by two infinitely wide parallel plates maintained at a uniform wall temperature. Closed-form solutions for the velocity and temperature profiles are developed along with local and averaged Nusselt numbers. The...
    Resource Type:
    Masters Thesis
    Full Text:
    Fully developed laminar natural convection in a vertical

  • A numerical study of solid fuel combustion in a moving bed

    Creator:
    Ko, Daekwun
    Abstract:
    Coal continues to be burned by direct combustion in packed or moving bed in small size domestic furnaces, medium size industrial furnaces, as well as small power stations. Recent stringent restrictions on exhaust emissions call for a better understanding of the process of combustion of coal in beds. The present...
    Resource Type:
    Dissertation
    Full Text:
    A numerical study of solid fuel combustion in a moving bed

  • Portland Cement Mortars and their Constitutent Materials

    Creator:
    Clark, Roy Ross and Luse, Fred Deininger
    Abstract:
    The rapid advance of concrete engineering in the West has made necessary reliable information as to the strength qualities of the most important marketable, sands In the eastern states, theory and practice have advanced hand in hand, by the investigation of the constituent materials of concrete. In the West, no...
    Resource Type:
    Undergraduate Thesis
    Full Text:
    ALS. Submitted t o the :acuity of the OREGON AGRICULTURAL COLLLL GE For the degree of A OTT L

  • Interactions of a fully modulated inclined jet with a crossflow

    Creator:
    Dano, Bertrand P. E.
    Abstract:
    Jets in crossflow are used in a wide range of engineering applications and have been studied for more than 60 years. The transversal penetration and structure of a jet placed in a crossflow is known to be strongly three-dimensional. It is believed that, by using a pulsed jet inclined in...
    Resource Type:
    Dissertation
    Full Text:
    : Interactions of a Fully Modulated Inclined Jet with a Crgssflow. Abstract approved: James A. Liburdy Jets in

  • An examination of point defects and atomic diffusion in silicon

    Creator:
    Monson, Tyrus K.
    Abstract:
    The self-interstitial defect is commonly regarded as important in regulating diffusion in silicon. A review of the literature reveals that the scientific bases for invoking the self-interstitial defect are weak, while an alternate defect, the vacancy cluster, has been largely ignored. One argument which has been used to establish dominance...
    Resource Type:
    Dissertation
    Full Text:
    the form (2-2) d[V]/dt = A([V]e4/[V] [V]/[V]el) where [V]el is the equilibrium vacancy

  • Computer-aided model generation and validation for dynamic systems

    Creator:
    Brisbine, Brian P.
    Abstract:
    The primary goal of any model is to emulate, as closely as possible, the desired behavioral phenomena of the real system but still maintain some tangible qualities between the parameters of the model and the system response. In keeping with this directive, models by their very nature migrate towards increasing...
    Resource Type:
    Masters Thesis
    Full Text:
    for Dynamic Systems. Abstract approved: ik A. Spiewak The primary goal of any model is to emulate