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  • Direct-sampling optical techniques for the study of transient combustion events

    Creator:
    Herron, John R.
    Abstract:
    Techniques have been developed for measuring the temperature, stable species concentrations, and atomic radical concentrations during a transient combustion event. They combine the features of direct sampling with two spectroscopic techniques to produce relatively simple diagnostic techniques to obtain time-resolved measurements. In this study, a transient event was provided by...
    Resource Type:
    Dissertation
    Full Text:
    Techniques for the Stud of Transient Combustion Events Abstract approved:_Redacted for privacy_ Richard B

  • 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:
    Abstract approved: Richard B. Peterson When trace quantities of an alkali element are added to a flame

  • A study of a diffusionally controlled reactive synthesis process using a multi-tube diffusion flame burner

    Creator:
    Snell, Douglas C.
    Abstract:
    A continuous process for the production of ceramic materials has been studied. This method reacted metal and oxidizer in a diffusionally controlled process, demonstrated by reacting a magnesium particle stream and hot water vapor. Many small rich hydrogen/air diffusion flames provide an atmosphere of hot water vapor, hydrogen, and nitrogen...
    Resource Type:
    Dissertation
    Full Text:
    approved: Richard B. Peterson A continuous process for the production of ceramic materials has been

  • Frequency and phase response of a resonantly-coupled alpha Stirling cooler

    Creator:
    Sripakagorn, Paiboon
    Abstract:
    A resonantly-coupled α-Stirling (RCAS) cooler was designed and constructed. Tests on air and helium were performed with constant driving displacement over a range of frequencies. The effects of changing driving amplitude and charged pressure were studied. The use of stainless steel bellows in place of pistons eliminated the problem of...
    Resource Type:
    Masters Thesis
    Full Text:
    - Coupled Alpha Stirling Cooler. Abstract approved: Richard B. Peterson A resonantly-coupled a-Stirling

  • Thermal characterization technique for thin dielectric films

    Creator:
    Indermuehle, Scott W.
    Abstract:
    A phase sensitive measurement technique that permits the simultaneous determination of two independent thermal properties of thin dielectric films is presented. Applying the technique results in a film's thermal diffusivity and effusivity, from which the thermal conductivity and specific heat can be calculated. The technique involves measuring a specimen's front...
    Resource Type:
    Masters Thesis
    Full Text:
    Dielectric Films. Abstract approved: Richard B. Peterson A phase sensitive measurement technique that

  • A computational model for resonantly coupled alpha free-piston Stirling Coolers

    Creator:
    Al-Hazmy, Majed Mualla H.
    Abstract:
    A computational model for a resonantly coupled alpha free-piston Stirling cooler is presented. The cooler consists of two isothermal working spaces for compression and expansion connected by a regenerator consisting of a stack of narrow parallel channels. The regenerator is assumed to have a linear temperature distribution along its axial...
    Resource Type:
    Dissertation
    Full Text:
    Computational Model for Resonantly Coupled Alpha Free-Piston Stirling Coolers. Abstract approved: Richard B

  • Design, modeling and performance of miniature reciprocating expander for a heat actuated heat pump

    Creator:
    Herron, Thomas G.
    Abstract:
    A miniature reciprocating expander is being developed as part of a larger program to develop a heat actuated heat pump for portable applications. By utilizing the higher energy density of liquid hydrocarbon fuels relative to batteries, a heat actuated heat pump would be able to provide cooling for much longer...
    Resource Type:
    Masters Thesis
    Full Text:
    : - / - .- Richard B. Peterson A miniature reciprocating expander is being developed as part of a larger program to

  • Investigation of the dimensional stability of an ultra-thin film gas/liquid contactor

    Creator:
    Peterson, Jerrod P.
    Abstract:
    The use of a permeable membrane to mechanically constrain a film of water with an area of 12 cm² and a thickness of 150 μm in a gas/liquid contactor was investigated. The membrane separated the vapor and liquid phases, and a stiffener plate made from a gas-permeable material was used...
    Resource Type:
    Masters Thesis
    Full Text:
    the Dimensional Stability of an Ultra-Thin Film Gas/Liquid Cnntacfnr Richard B. Peterson The use of

  • An experimental study of flow boiling heat transfer enhancement in minichannels with porous mesh heating wall

    Creator:
    Wang, Hailei
    Abstract:
    A unique channel surface enhancement technique via diffusion-bonding a layer of conductive fine wire mesh onto the heating wall was developed and used to experimentally study flow boiling enhancement in parallel microchannels. Each channel was 1000 μm wide and 510 μm high. A dielectric working fluid, HFE 7000, was used...
    Resource Type:
    Dissertation
    Full Text:
    to his academic advisor Dr. Richard Peterson for his continuous guidance and support during his

  • Integrated dual cycle energy recovery using thermoelectric conversion and an organic Rankine bottoming cycle

    Creator:
    Miller, Erik W.
    Abstract:
    Hot engine exhaust and industrial process exhaust represents a resource that is often rejected to the environment without further utilization. This resource is prevalent in the transportation and industrial process sectors, but stationary engine-generator systems also typically do not utilize this resource. Engine exhaust is considered high grade heat and...
    Resource Type:
    Masters Thesis
    Full Text:
    Thermoelectric Conversion and an Organic Rankine Bottoming Cycle. Abstract approved: Richard B