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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Computed Tomography Scanning and Geophysical Measurements of the T.R. McMillen 2 Core
Carbon Storage TRS.
Core Characterization of the Whipkey ST1 Well - Marcellus Shale
CT and geophysical data of the Marcellus from the Whipkey ST 1 well in Greene Co PA API No: 37-059-24715 latitude 39.9000020N, longitude -80.0199970W Please see the following technical report for further details. Crandall, D.; Moore, J.; Brown, S.; Mackey, P.; Carr, T. Computed Tomography Scanning and Geophysical Measurements of the Marcellus Formation from the Whipkey ST 1 Well NETL-TRS-X-2018; NETL Technical Report Series; U.S. Department of Energy, National Energy Technology Laboratory: Morgantown, WV, 2018; p 54.
Discrete measurements of the least horizontal principal stress from core data: An application of viscoelastic stress relaxation
Data used in JGR Solid Earth manuscript.
P-V-T measurements of Fe3C to 117 GPa and 2100 K: Implications for stability of Fe3C phase at core c
Explore the source record for details and available documents.
Pressure-induced C23?C37 transition and compression behavior of orthorhombic Fe2S to Earth?s core pr
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Graupel and Hail Identification Algorithm for the Dual-frequency Precipitation Radar (DPR) on the GPM Core Satellite
Precipitation consists of many types of hydrometeors, such as raindrops, ice crystals, graupel, and hail. Due to their impacts, graupel and hail (GH) have received particular attention in the literature. Global Precipitation Measurement (GPM) dual-frequency radar (DPR) has proved to be a very reliable system for global precipitation retrievals. This paper aims to develop a GH identification algorithm for GPM DPR. This algorithm is constructed using a precipitation type index (PTI) defined for DPR. The PTI is effective in separating hydrometeor types and is calculated using measurements of reflectivity, dual-frequency ratio, and storm top height data. The output of the algorithm is a Boolean product representing the existence of graupel or hail along with the vertical profile for each Ku- and Ka-band matched footprint. Cross validation is performed with the Weather Service Radar (WSR-88D) network over continental United States as well as during the Remote sensing of Electrification, Lightning, and Mesoscale/Microscale Processes with Adaptive Ground Observations (RELAMPAGO) experiment. Evaluation of the GH identification algorithm is performed on a global basis, which illustrates promising comparisons with the global lightning and hail precipitation maps generated using radar and radiometer.
Fast-Spectrum Critical Assemblies with a HEU-Pb Core Surrounded by a Copper Reflector [Slides]
Inelastic scattering cross sections for several lead isotopes are insufficiently known at this time. There are very few Pb integral experiments. MCNP calculations using the latest international nuclear data libraries tend to over/under-estimate the measured results.
Core-Shell Nanoparticles for Flexible Electrophoretic Displays
The process of electrophoretic deposition (EPD) has many applications in the field of ceramics materials and coatings.It allows for control of the thickness and morphology through variations in the concentration of the suspension, applied potential, and deposition time. In EPD, a solution containing charged particles are attracted and coated onto an electrically conductive substrateof opposing charge to the coated particles by applying an electric field (Besra 3).The electrophoretic mobility of the nanoparticle solutionmust be considered when designing an EPD device as well. The packing of the charged particles on the charged substrate can lead to some interesting optical effects.
Support for the Core Research Activities and Studies of the Computer Science and Telecommunications Board (Final Technical Report)
This award provided partial support for the operation of the Computer Science and Telecommunications Board. This included planning, organization, and agenda preparation for twice-annual board meetings; selection and organization of topical sessions at board meetings; identification and recruiting of outside speakers; and identifying and recruiting new board members from academia and industry.
Considerations for Application of Additive Manufacturing to Nuclear Reactor Core Components
The following chapter represents the current state of literature on the selected additive manufacturing technologies and was written with an emphasis on quality control and material performance repeatability. Research and standards published by government entities such as the National Institute of Standards and Technology (NIST) and Department of Energy (DOE) have been included where applicable. It is recommended that literature be reviewed, and new knowledge integrated no less frequently than every four years due to the rapid pace of advancements in additive manufacturing and associated industries. AM presents unique challenges in certification for NPP applications such as anisotropic material properties, porosity, underdeveloped process control feedback systems, and reproducibility. This chapter begins with an overview of the selected AM technologies, followed by a systematic review of literature to detail the fabrication process and difficulties with repeatably fabricating fully dense, geometrically accurate components with known material properties.
Core-Collapse Supernovae Simulations using FleCSPH
Abstract not provided.
Big Area Additive Manufacturing Engineering Development, Process Trials, and Composite Core Fabrication (CRADA NFE-17-06827 Final Report)
Oak Ridge National Laboratory (ORNL) has worked with Raytheon to develop and test the materials necessary to produce a moderately sized boat using Big Area Additive Manufacturing (BAAM). This Phase 2 project focused on printing and testing the components of the boat designed by Raytheon. This involved collaborating on boat design, printing the boat, testing surface coatings, and assembling the boat.
Next steps in our hydro simulations core and surface, g-modes and p-modes [Slides]
Abstract not provided.
Scientific Development of Core Block and Monolith Materials (FY2020 Progress)
This report presents the status of an effort to investigate welding and joining techniques for microreactor monolith structural materials. Previously reported results have demonstrated the potential to tier weld sub-scale components using electron beam welding. Tier welding has been investigated on larger scale test articles, and results indicate that tier welding is not feasible for larger components due to the penetration depth that is required. Additional techniques to produce full length parts have been examined, including diffusion bonding and gundrilling. Evaluations of these techniques are ongoing, and have shown early success on sub-scale components. These results indicate that while issues still exist for manufacturing microreactor structures, these challenges are better understood and solutions are in development.
Fast-Spectrum Critical Assemblies with a Pb-HEU Core Surrounded by a Copper Reflector [Slides]
Abstract not provided.
Diffusive Properties of UNESE Core Samples via Continuously Monitored Mass Spectroscopy
The transport properties of porous geological media are of fundamental importance when modeling the migration of chemical and radiological species in subterranean systems. Due to their relatively high mobility, short-lived noble gas species are of particular interest as detection of these species at the surface is a tell-tale indicator of recent nuclear activity. However, determining the diffusivity of these species is challenging due to their inert and transparent nature, requiring chemically insensitive techniques, such as mass spectroscopy, to quantify noble gas concentrations. The work described herein details recent advances in the methodology for determining diffusivity on porous media and results obtained on samples relevant to the UNESE project.