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Filtering by: Creator Sievert, Stefan M. Remove constraint Creator: Sievert, Stefan M. Degree Field Nuclear Engineering Remove constraint Degree Field: Nuclear Engineering

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  • A Numerical Investigation into Capillary-Wrapped Liquid Sodium Pin-Bundles for Instrumentation Development

    Creator:
    Vietz, Stefan
    Abstract:
    Liquid sodium is a challenging fluid to perform verification and validation for. Its chemical reactivity, large thermal conductivity, and opacity make both modeling and experimental data gathering difficult. Converting the wire wraps of liquid sodium reactor fuel pin geometry into capillaries, and inserting fiber optic temperature sensors, promises to capture...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Stefan Vietz for

  • Radioxenon generation using highly enriched uranium

    Creator:
    Elliott, Anthony James
    Abstract:
    This work focuses on the generation and collection of four specific radioxenon isotopes; xenon-131m, xenon-133m, xenon-133 and xenon-135. These nuclides are created by fissioning a highly enriched uranium sample using a thermal neutron source from a university research reactor. The three main aspects of this work include: (1) Conducting preliminary...
    Resource Type:
    Masters Thesis
    Full Text:
    Uranium Abstract approved: David M. Hamby This work focuses on the generation and

  • Modeling transient thermalhydraulic behavior of a thermionic fuel element for nuclear space reactors

    Creator:
    Al-Kheliewi, Abdullah S.
    Abstract:
    A transient code (TFETC) for calculating the temperature distribution throughout the radial and axial positions of a thermionic fuel element (TFE) has been successfully developed. It accommodates the variations of temperatures, thermal power, electrical power, voltage, and current density throughout the TFE as a function of time as well as...
    Resource Type:
    Dissertation
    Full Text:
    committee members: Dr. Jack F. Higginbotham, Dr. M. M. Kulas, and Dr. John Peterson for their time and

  • Validation of a Transient Coupled CFD-Reactor Physics Model: An Experimental Methodology to Quantify the Accuracy of CONSTELATION for the HENRI System

    Creator:
    Warren, Austin M.
    Abstract:
    The HENRI system was developed to narrow the pulse width of TREAT from 89 ms to below 60 ms with the goal of improving the test reactor's ability to simulate RIAs in LWRs by rapidly injecting helium-3, a strong neutron poison, into the core. A coupled model using the CFD...
    Resource Type:
    Masters Thesis
    Full Text:
    System AN ABSTRACT OF THE THESIS OF Austin M. Warren for the degree of Master of Science in Nuclear

  • Dynamical System Scaling of Fuel Performance During Reactivity Insertion Accidents

    Creator:
    Dueñas, Alexander M.
    Abstract:
    Fuel qualification timelines for new fuel technology under ideal conditions can take between 20-25 years to be fully qualified from initial concept to deployment as full fuel assemblies. To reduce the timeline and costs, new separate-effects test and integral-effects test experiments, advanced instrumentation, and advanced modeling and simulation tools are...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE DISSERTATION OF Alexander M

  • Designing a Spent Fuel Imaging System Using Active Radiography and Passive Tomography Techniques

    Creator:
    Economy, Nikolas
    Abstract:
    Instead of expensive and destructive chemical analysis, nondestructive assay (NDA) through radiography and tomography can be a faster, easier, and more appropriate method of analyzing spent nuclear fuel (SNF). As a preliminary study for the future design of a submersible SNF imaging system, this thesis demonstrates the ability of NDA...
    Resource Type:
    Masters Thesis
    Full Text:
    edges: K, L, and M. Values for Figure 2 through Figure 6 of important materials pertaining to this

  • Advanced Deterministic Phonon Transport Techniques for Predicting Spectral Thermal Conductivity in Homogeneous and Heterogeneous Media

    Creator:
    Harter, Jackson R.
    Abstract:
    We present a deterministic spectral method to predict equilibrium temperature distributions, heat flux, and thermal conductivity in homogeneous and heterogeneous media. We solve the Boltzmann transport equation in a second order spatial, self-adjoint angular flux formulation. We implemented this method into the radiation transport code Rattlesnake, built using the MOOSE...
    Resource Type:
    Dissertation
    Full Text:
    UO2 [3] and Xe (this work) . . . . 50 2.3 Thermal conductivity ( W ·m−1 ·K−1 ) simulated using ΛUO2

  • Fabric composite radiation heat transfer study

    Creator:
    Gulshan, Zubaida A.
    Abstract:
    A Fabric Composite Radiation Heat Transfer Study has been conducted to determine the effective emissivities of specific fabric composite materials. The weave of the fabric and the high strength capability of the individual fiber in combination with the thermal conductivity and chemical stability of specific metallic liner, result in a...
    Resource Type:
    Masters Thesis
    Full Text:
    professor M.S. Islam, Dr. S.I. Bhuiyan, and M. Musa for encouraging me to enter the field of nuclear

  • Design of a Radioisotope Powered Cubesat

    Creator:
    McConnell, Brice David
    Abstract:
    Miniature satellites called cubesats have been gaining increasing popularity in both academic and private spaceflight ventures. NASA's Jet Propulsion Laboratory has recently been accepting design proposals for a cubesat mission to Europa, where solar and battery power would be inadequate power sources. In this thesis, a radioisotope powered cubesat was...
    Resource Type:
    Honors College Thesis
    Full Text:
    Conduction and the Stefan-Boltzmann Law of Radiation. These smaller, simpler problems are then combined into

  • Ultralight fabric reflux tube thermal vacuum testing

    Creator:
    Pauley, Keith Alan
    Abstract:
    Five Ultra light Fabric Reflux Tubes (UFRTs) were tested in a thermal vacuum chamber at the National Aeronautics and Space Administration's Johnson Space Center in September 1994. These test articles were design and fabricated by staff at the Pacific Northwest Laboratory, operated by Battelle Memorial Institute for the United States...
    Resource Type:
    Masters Thesis
    Full Text:
    takes a feedstock with a wall thickness of 300 gm and produces a liner with a nominal length of 1 m