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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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ANSYS Explicit Modeling for Prospective SAVY Designs and Worst Case Impact Orientation during Drop
A preliminary experimental drop test of a new 5.5 gallon SAVY-4000 container at a 12 ft height resulted in an impact angle of approximately 26 degrees and significant deformation of the locking ring and locking collar. Subsequently, the SAVY failed leak tests following the drop test. Based on previous analyses on SAVY containers, the primary modes of failure were determined to be vertical drops directly over the lid for the larger diameter sizes. The tests were initially bounded by the 45 degree impact angle. It was necessary to determine if a new bounding case existed at or near an impact angle of 26 degrees. In addition to characterizing the drop angle, modifications to the existing SAVY components were applied and analyzed to determine if container deformations could be minimized. Figure 1 includes the primary drop configurations investigated. A parametric study was conducted to determine the sensitivity of lid and collar deformation as a function of impact angle.
GPHS Module Pre-Impact test Temperature Prediction with ANSYS [PowerPoint]
The purpose of the project was to: Develop a finite element thermal model of the General Purpose Heat Source (GPHS) Module loaded with four fueled clads; Perform steady state analysis to validate the thermal model via energy balance; Perform transient thermal analysis to predict clad temperatures at various times; and, Transient model results will be used to inform module soak time needed to reach a desired clad temperature prior to impact.
BIA Shipping Configuration Temperature Prediction with ANSYS [Slides]
The purpose of the project was two-fold: Determine the internal and external temperature of the BIA shipping configuration and Ensure external SAVY temperature is compatible with drum packing materials
Reference document for LANL stack sampling and ANSI N13.1 (Article) Gielow RL and McNamee MR 1993. Numerical Flue Gas Flow Modeling for Continuous Emissions Monitoring Applications. EPRI CEM Users Group Meeting. Baltimore. RP1961-13
American National Standard N13.1 “sets forth guidelines and performance criteria for sampling the emissions of airborne radioactive substances in the air discharge ducts and stacks of nuclear facilities. Emphasis is on extractive sampling from a location in a stack or duct where the contaminant is well mixed. At such a location, sampling may be conducted at a single point. This standard provides performance-based criteria for the use of air sampling probes, transport lines, sample collectors, sample monitoring instruments, and gas flow measuring methods. This standard also covers sampling program objectives, quality assurance issues, developing air sampling action levels, system optimization, and system performance verification. Workplace, containment, and environmental air monitoring are not addressed. Specific sample analysis methods and the reporting or interpreting of results are also not addressed.” (HPS 2011).
Glovebox CFD Analysis: Low-Flow, Laminar CFD Analysis of Glovebox Ventilation and Humidity Transport in Ansys Fluent 2025 R1
There are gloveboxes that frequently exceed the 30% relative humidity level required for operations. These exceedances result in alternative operations needing to be utilized. This report documents a computational fluid dynamics (CFD) analysis performed to characterize airflow and humidity transport within a representative glovebox under nominal, low-flow conditions. The analysis focuses on establishing the flow regime, identifying transport-limited regions, and evaluating the implications of laminar flow on humidity removal. A single-phase, laminar flow model with a species transport model was used to represent air and water vapor mixing. Results demonstrate that, at the nominal flow rates, airflow is laminar with weak mixing, which will result in long residence times, tens of minutes long or more, in low-velocity regions. These conclusions suggests that humidity reduction is transport-limited. This analysis provides qualitative insight into airflow structure and humidity transport trends. In addition to characterization of glovebox airflow and humidity transport, results are intended to inform experimental validation and future transient modeling efforts.
HLW Melter Refractory Thermal Finite Element Analysis using ANSYS
The objective of this calculation is to provide thermal profiles, heat dissipation and refractory thermal expansion results from changes to inputs/assumptions related to optimization of margins and conservatisms (described in Section 3).
Proposed ANSI guide for aquatic ecological surveys at thermal power plants
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Suitability of ANSI standards for quantifying communication satellite system performance
A study on the application of American National Standards X3.102 and X3.141 to various classes of communication satellite systems from the simple analog bent-pipe to NASA's Advanced Communications Technology Satellite (ACTS) is discussed. These standards are proposed as means for quantifying the end-to-end communication system performance of communication satellite systems. An introductory overview of the two standards are given followed by a review of the characteristics, applications, and advantages of using X3.102 and X3.141 to quantify with a description of the application of these standards to ACTS.
Evaluation and Analysis of the ANSI X3T9.5 (FDDI) PMD and Proposed SMF-PMD as Influenced by Various Fiber Link Characteristics
The purpose of this project is to evaluate the operational parameters of the Kennedy Space Center (KSC) fiber optic cable plant. The evaluation is based on the Fiber Distributed Data Interface (FDDI) Physical Medium Dependent (PMD) and Single Mode Fiber (SMF) PMD standards. From the KSC fiber profile, it would be necessary to develop the modifications needed in existing FDDI PMD and proposed SMF-PMD standards to provide for FDDI implementation and operation at KSC. This analysis should examine the major factors that influence the operating conditions of the KSC fiber plant. These factors would include, but are not limited to the number and type of connectors, attenuation and dispersion characteristics of the fiber, non-standard fiber sizes, modal bandwidth, and many other relevant or significant fiber plant characteristics that effect FDDI characteristics. This analysis is needed to gain a better understanding of overall impact that each of these factors have on FDDI performance at KSC.
Unconservatism of ANSI AIAA S081B for Damage Tolerance Life Analysis of COPVs
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Heat Transfer Through Small Moveable Gas Gaps in a Multi-Body System Using the ANSYS Finite Element Software
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Evaluation of ANSI Z136.1-2014 and Comparison with Z136.1-2007 and Z136.8-2012
Abstract Not Provided
The Methodologies for the ANSI N14.1 Standard for Uranium Hexafluoride
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ANSI Energy Efficiency Standarization Coordination Collaborative: Call for Participants
The EESCC invites experts to help develop an energy efficiency standardization "roadmap," consisting of an inventory, gap analysis, and priority areas in need of additional standardization efforts. Public and private representatives will also identify approaches to promote adoption and effective implementation of energy efficiency solutions through voluntary, consensus-based standardization and conformance activities.
Simulation of Proppants Motion and Placement in Realistic Rock Fractures Using Ansys-Fluent-Rocky Code
Presentation describing direct numerical simulations of particle transport in digitized fracture models with coupled particle transport.
CFD Simulations of an Air-Conditioned Radiological Materials Staging Room: Comparison Between COMSOL and ANSYS Codes
This is the final thesis and research paper for Frank Pulciano. He is graduating with his Masters in Mechanical Engineering and will be presenting his research and defending his thesis.