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  • Describing function theory as applied to thermal and neutronic problems

    Creator:
    Nassersharif, Bahram
    Abstract:
    Describing functions have traditionally been used to obtain the solutions of systems of ordinary differential equations. In this work the describing function concept has been extended to include nonlinear, distributed parameter partial differential equations. A three-stage solution algorithm is presented which can be applied to any nonlinear partial differential equation....
    Resource Type:
    Dissertation
    Full Text:
    Describing function theory as applied to thermal and

  • Applied color processing

    Creator:
    Zhang, Heng
    Abstract:
    The quality of a digital image pipeline relies greatly on its color reproduction which should at a minimum handle the color constancy, and the final judgment of the excellence of the pipeline is made through subjective observations by humans. This dissertation addresses a few topics surrounding the color processing of...
    Resource Type:
    Dissertation
    Full Text:
    Engineering presented on November 29, 2011. Title: Applied Color Processing. Abstract approved

  • Temperature measurement, electrical characteristics, and lorentz mixing of alkali seeded flames

    Creator:
    Pattee, Heidi Ann
    Abstract:
    When trace quantities of an alkali element are added to a flame, its optical and electrical properties change significantly. Addition of alkali seed to both premixed and diffusion flames has been used in the development of two new techniques, one for flame temperature measurement and the other for enhanced mixing....
    Resource Type:
    Dissertation
    Full Text:
    Doctor of Philosophy in Mechanical Engineering presented on January 23, 1992 . Title: Temperature

  • Nonlinear control applied to power systems

    Creator:
    Vedam, Rajkumar
    Abstract:
    When large disturbances occur in interconnected power systems, there exists the danger that the power system states may leave an associated region of stability, if timely corrective action is not taken. Open-loop remedial control actions such as field-forcing, line-tripping, switching of series-capacitors, energizing braking resistors, etc., are helpful in reducing...
    Resource Type:
    Dissertation
    Full Text:
    Nonlinear control applied to power systems AN ABSTRACT OF

  • A Social Constructivist Perspective Connecting Engineering Practice and Engineering Education

    Creator:
    Panther, Grace C.
    Abstract:
    Calls for reform within engineering education frequently cite the need to better prepare the future workforce for the imminent challenges that they will face. The focus in preparing students for the workforce is often on the educational system and not on understanding the actual workplace. But if we are to...
    Resource Type:
    Dissertation
    Full Text:
    overarching goal of this research is to better understand how knowledge is applied in authentic engineering

  • Rheological measurements of bulk metallic glass forming alloys above the liquidus temperature

    Creator:
    Shaw, Tyler A.
    Abstract:
    A high temperature high vacuum rheometer has been designed, fabricated, and tested for the study of the steady shear viscosity for multicomponent bulk metallic glass forming alloys. This rheometer has an operating range up to 1525 K, rotational frequencies of 9.4*10⁻³-3.7*10¹ radians/s, and a calibrated viscosity range of 9.6*10⁻³ and...
    Resource Type:
    Dissertation
    Full Text:
    " Rochefort OSU Dept. of Mechanical Engineering TABLE OF CONTENTS 11 Page 0. Introduction

  • Submerged jet impingement boiling thermal management

    Creator:
    Cardenas, Ruander
    Abstract:
    Technologies such as avionics and power electronics are driving the demand for thermal management schemes towards high heat fluxes and low surface temperatures. Typically, these applications require the dissipation of heat fluxes in the rage of 100-1000 W/cm² while maintaining surface temperatures lower than about 85 °C. Phase-change heat transfer...
    Resource Type:
    Dissertation
    Full Text:
    Engineering presented on September 28, 2011. Title: Submerged Jet Impingement Boiling Thermal Management

  • Applications of the thermal wave technique in liquid thermal conductivity measurements and flow field diagnostics

    Creator:
    Wang, Zhefu
    Abstract:
    The thermal wave technique has been explored for the use of liquid thermal conductivity measurement and flow property diagnostics in this dissertation. For liquid thermal conductivity measurements, an experimental technique based on the thermal wave approach is developed. A stainless steel strip functions as both a heating element and a...
    Resource Type:
    Dissertation
    Full Text:
    Mechanical Engineering Presented on July 16, 2008. Title: Applications of the Thermal Wave Technique in

  • Prediction of thermodynamic properties of aqueous electrolyte solutions

    Creator:
    Kim, Hee-taik
    Abstract:
    The research undertaken in this study deals with three topics related to the prediction of thermodynamic properties of electrolytes in aqueous solutions. In the first, Pitzer ion interaction parameters for 304 single electrolytes were evaluated from recently published osmotic coefficient data at 25°C by using multiple regression analysis to fit...
    Resource Type:
    Dissertation
    Full Text:
    Chemical Engineering presented on February 18, 1988 Title: Prediction of Thermodynamic Properties of

  • A numerical model for predicting energy dispersion in thermal plumes issuing from large, vertical outfalls in shallow coastal water

    Creator:
    Trent, Donald S.
    Abstract:
    A theoretical study of the heat and momentum transfer resulting from a flow of power plant condenser effluent discharged vertically to shallow, quiescent coastal receiving water is presented. The complete partial differential equations governing steady, incompressible, turbulent flow driven by both initial momentum and buoyancy are solved using finite-difference techniques...
    Resource Type:
    Dissertation
    Full Text:
    thermal plumes issuing from large, vertical outfalls in shallow coastal water AN ABSTRACT OF THE THESIS