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Light Water Reactor Sustainability Program Technical Basis Guide Describing How to Perform Safety Margin Configuration Risk Management

Description: The INL has carried out a demonstration of the RISMC approach for the purpose of configuration risk management. We have shown how improved accuracy and realism can be achieved by simulating changes in risk – as a function of different configurations – in order to determine safety margins as the plant is modified. We described the various technical issues that play a role in these configuration-based calculations with the intent that future applications can take advantage of the analysis benefits while avoiding some of the technical pitfalls that are found for these types of calculations. Specific recommendations have been provided on a variety of topics aimed at improving the safety margin analysis and strengthening the technical basis behind the analysis process.
Date: August 1, 2013
Creator: Smith, Curtis; Knudsen, James & Harwood, Bentley
Partner: UNT Libraries Government Documents Department

Patterns and instability of grannular flow

Description: Dense granular flows are often observed to become unstable and form inhomogeneous structures in nature or industry. Although recently significant advances have been made in understanding simple flows, instabilities are often not understood in detail. We present experimental and numerical results that show the formation of longitudinal stripes. These arise from instability of the uniform flowing state of granular media on a rough inclined plane. The form of the stripes depends critically on the mean density of the flow with a robust form of stripes at high density that consists of fast sliding plug-like regions (stripes) on top of highly agitated boiling material -- a configuration reminiscent of the Leidenfrost effect when a droplet of liquid lifted by its vapor is hovering above a hot surface.
Date: January 1, 2009
Creator: Ecke, Robert E; Borzsonyi, Tamas & Mcelwaine, Jim N
Partner: UNT Libraries Government Documents Department

The Effective Downwash Characteristics at Transonic Speeds of a 6-Percent-Thick Wing With 47 Degrees of Sweepback in Combination With a Cylindrical Body as Determined From Force Measurements of a Horizontal Tail

Description: Memorandum presenting the effective downwash characteristics of a wing-body configuration and the body alone determined from lift measurements of a horizontal tail located 0.333 and 0.479 wing semispan above the body center line. The wing had a sweepback angle of 47 degrees, an aspect ratio of 3.5, a taper ratio of 0.2, and a thickness ratio of 0.06.
Date: November 26, 1952
Creator: Coppolino, Domenic A.
Partner: UNT Libraries Government Documents Department

SAPHIRE 8 Software Configuration Management Plan

Description: The INL software developers use version control for both the formally released SAPHIRE versions, as well as for source code. For each formal release of the software, the developers perform an acceptance test: the software must pass a suite of automated tests prior to official release. Each official release of SAPHIRE is assigned a unique version identifier. The release is bundled into a standard installation package for easy and consistent set-up by individual users. Included in the release is a list of bug fixes and new features for the current release, as well as a history of those items for past releases. Each formal release of SAPHIRE will have passed an acceptance test. In addition to assignment of a unique version identifier for an official software release, each source code file is kept in a controlled library. Source code is a collection of all the computer instructions written by developers to create the finished product. The library is kept on a server, where back-ups are regularly made. This document describes the configuration management approach used as part of the SAPHIRE development.
Date: January 1, 2010
Creator: Smith, Curtis
Partner: UNT Libraries Government Documents Department

Progress report on the wisker weaving all-hexahedral meshing algorithm

Description: In this paper, a review of the Spatial Twist Contiuum and the basic whisker weaving algorithm are given. Progress in the detection and resolution of several types of degeneracies formed by whisker weaving are discussed. These examples include so-called knife doublets, triple doublets, through-cells and through-chords. Knife doublets and triple doublets are resolved by preventing their formation a-priori, which forces whisker weaving to remove the element(s) causing the degeneracy. Through-chords and through-cells are left in the weave and resolved after the weave has been closed. The paper concludes with three examples of geometries ``closed`` by whisker weaving.
Date: February 1, 1996
Creator: Tautges, T.J. & Mitchell, S.A.
Partner: UNT Libraries Government Documents Department

On cylindrically converging shock waves shaped by obstacles

Description: Motivated by recent experiments, numerical simulations were performed of cylindrically converging shock waves. The converging shocks impinged upon a set of zero to sixteen regularly space obstacles. For more than two obstacles the resulting diffracted shock fronts formed polygonal shaped patterns near the point of focus. The maximum pressure and temperature as a function of number of obstacles were studied. The self-similar behavior of cylindrical, triangular and square-shaped shocks were also investigated.
Date: July 16, 2007
Creator: Eliasson, V; Henshaw, W D & Appelo, D
Partner: UNT Libraries Government Documents Department

DYNAMIC DELAMINATION IN THROUGH-THICKNESS REINFORCED DCB SPECIMEN

Description: Bridged crack models using beam theory formulation have proved to be effective in the modeling of quasistatic delamination crack growth in through thickness reinforced structures. In this paper, we model dynamic crack propagation in these structures with the beam theory formulation. Steady state crack propagation characteristics unique to the dynamic case are first identified. Dynamic crack propagation and the energetics of steady state dynamic crack growth for a Double Cantilever beam (DCB) configuration loaded with a flying wedge is examined next. We find that steady state crack growth is attainable for this loading configuration provided certain conditions are satisfied.
Date: February 1, 2001
Creator: SRIDHAR, N. & AL, ET
Partner: UNT Libraries Government Documents Department

A Computer Program for Calculating One-Dimensional Hydrodynamic Flow: KO Code

Description: A computer program is described for the solution of shock, detonation, and spall problems for one-dimensional linear, cylindrical, or spherical hydrodynamic flow. The Flume option is used for calculating flow- through arbitrary cross sections. (R.J.S.)
Date: July 2, 1962
Creator: Wilkins, M.; French, J. & Giroux, R.
Partner: UNT Libraries Government Documents Department

ESF GROUND SUPPORT - STRUCTURAL STEEL ANALYSIS

Description: The purpose and objective of this analysis are to expand the level of detail and confirm member sizes for steel sets included in the Ground Support Design Analysis, Reference 5.20. This analysis also provides bounding values and details and defines critical design attributes for alternative configurations of the steel set. One possible configuration for the steel set is presented. This analysis covers the steel set design for the Exploratory Studies Facility (ESF) entire Main Loop 25-foot diameter tunnel.
Date: June 26, 1996
Creator: Misiak, T.
Partner: UNT Libraries Government Documents Department

The Influence of Configuration and Letter Sequence on Recognition Thresholds of Words

Description: The purpose of this study is to attempt to determine what influence configuration and/or letter sequence have on the recognition thresholds of words. It is felt that low configuration and/or rare letter sequences will result in lower recognition thresholds, while high configuration and/or common letter sequence will result in higher recognition thresholds when stimulus words are presented to subjects by means of a tachistoscope.
Date: January 1962
Creator: Stewart, James C.
Partner: UNT Libraries

PROCEEDINGS OF THE BROOKHAVEN CONFERENCE ON NEUTRON THERMALIZATION, APRIL 30 TO MAY 2, 1962. VOLUME I. THE SCATTERING LAW. VOLUME II. NEUTRON SPECTRA IN LATTICES AND INFINITE MEDIA. VOLUME III. EXPERIMENTAL ASPECTS OF TRANSIENT AND ASYMPTOTIC PHENOMENA. VOLUME IV. THEORETICAL ASPECTS OF TRANSIENT AND ASYMPTOTIC PHENOMENA

Description: Included in the conference proceedings are 69 papers grouped into the categories on the experimental and theoretical aspects of the scattering law,'' of spectra ln lattices and infinite media, and of transient and asymptotic phenomena. One paper in each of the categories is a summary of the material presented by the other papers in that group. Separate abstracts have been prepared for 52 papers, and 15 papers have been previously abstracted in NSA. (M.P.G.)
Date: October 31, 1963
Partner: UNT Libraries Government Documents Department

Optimized Minimal Inductance Transmission Line Configuration for Z-Pinch Experiments

Description: Successful dynamic Z-pinch experiments generally require good current delivery to the target load. Power flow losses through highly inductive transmission line configurations reduce the current available to the load. In this Brief Report, a variational calculus technique is used to determine the transmission line configuration that produces the least possible inductance and therefore the best possible current delivery for Z-pinch experiments.
Date: October 16, 2003
Creator: Hurricane, O. A.
Partner: UNT Libraries Government Documents Department

Reactive Spreading of a Lead-Free Solder on Alumina

Description: The wetting of Sn3Ag-based alloys on Al{sub 2}O{sub 3} has been studied using the sessile-drop configuration. Small additions of Ti decrease the contact angle of Sn3Ag alloys on alumina from 115 to 23 degrees. Adsorption of Ti-species at the solid-liquid interface prior to reaction is the driving force for the observed decrease in contact angle, and the spreading kinetics is controlled by the kinetics of Ti dissolution into the molten alloy. The addition of Ti increases the transport rates at the solid-liquid interface, resulting in the formation of triple-line ridges that pin the liquid front and promote a wide variability in the final contact angles.
Date: December 1, 2005
Creator: Gremillard, L.; Saiz, E.; Radmilovic, V.R. & Tomsia, A.P.
Partner: UNT Libraries Government Documents Department

Massively-parallel electrical-conductivity imaging of hydrocarbonsusing the Blue Gene/L supercomputer

Description: Large-scale controlled source electromagnetic (CSEM)three-dimensional (3D) geophysical imaging is now receiving considerableattention for electrical conductivity mapping of potential offshore oiland gas reservoirs. To cope with the typically large computationalrequirements of the 3D CSEM imaging problem, our strategies exploitcomputational parallelism and optimized finite-difference meshing. Wereport on an imaging experiment, utilizing 32,768 tasks/processors on theIBM Watson Research Blue Gene/L (BG/L) supercomputer. Over a 24-hourperiod, we were able to image a large scale marine CSEM field data setthat previously required over four months of computing time ondistributed clusters utilizing 1024 tasks on an Infiniband fabric. Thetotal initial data misfit could be decreased by 67 percent within 72completed inversion iterations, indicating an electrically resistiveregion in the southern survey area below a depth of 1500 m below theseafloor. The major part of the residual misfit stems from transmitterparallel receiver components that have an offset from the transmittersail line (broadside configuration). Modeling confirms that improvedbroadside data fits can be achieved by considering anisotropic electricalconductivities. While delivering a satisfactory gross scale image for thedepths of interest, the experiment provides important evidence for thenecessity of discriminating between horizontal and verticalconductivities for maximally consistent 3D CSEM inversions.
Date: May 16, 2007
Creator: Commer, M.; Newman, G.A.; Carazzone, J.J.; Dickens, T.A.; Green,K.E.; Wahrmund, L.A. et al.
Partner: UNT Libraries Government Documents Department

Demand Controlled Filtration in an Industrial Cleanroom

Description: In an industrial cleanroom, significant energy savings were realized by implementing two types of demand controlled filtration (DCF) strategies, one based on particle counts and one on occupancy. With each strategy the speed of the recirculation fan filter units was reduced to save energy. When the control was based on particle counts, the energy use was 60% of the baseline configuration of continuous fan operation. With simple occupancy sensors, the energy usage was 63% of the baseline configuration. During the testing of DCF, no complaints were registered by the operator of the cleanroom concerning processes and products being affected by the DCF implementation.
Date: September 1, 2007
Creator: Faulkner, David; DiBartolomeo, Dennis & Wang, Duo
Partner: UNT Libraries Government Documents Department

Adaptive path planning algorithm for cooperating unmanned air vehicles

Description: An adaptive path planning algorithm is presented for cooperating Unmanned Air Vehicles (UAVs) that are used to deploy and operate land-based sensor networks. The algorithm employs a global cost function to generate paths for the UAVs, and adapts the paths to exceptions that might occur. Examples are provided of the paths and adaptation.
Date: February 8, 2001
Creator: Cunningham, C T & Roberts, R S
Partner: UNT Libraries Government Documents Department

Flight Investigation to Determine Lift and Drag Characteristics of a Canard Ram-Jet Missile Configuration in the Mach Number Range of 0.8 to 2.0

Description: Report presenting an investigation on a canard ramjet missile configuration to determine its lift and drag characteristics at low values of lift. Two rocket-boosted models that differed only in the size and deflection of the canard were used. Information about the trim lift characteristics, drag, and stability is provided.
Date: June 17, 1954
Creator: Gammal, Abraham A. & Kennedy, Thomas L.
Partner: UNT Libraries Government Documents Department

A Low-Speed Investigation of a High-Lift Lateral-Control Device Consisting of a Spoiler-Slot-Deflector and a Trailing-Edge Flap on a Tapered 45 Degree Sweptback Wing

Description: Report presenting an investigation to determine the aerodynamic characteristics of a spoiler-slot-deflector configuration in combination with a trailing-edge 29-percent-chord high-lift flap. The wing has a sweepback of 45 degrees at the quarter-chord line, an aspect ratio of 4, a taper ratio of 0.6, and an NACA 65A006 airfoil. Results are also presented regarding the effect of deflector projection on the aerodynamic characteristics of a spoiler-slot-deflector on the plain wing.
Date: October 26, 1956
Creator: Hammond, Alexander D. & Huffman, Jarrett K.
Partner: UNT Libraries Government Documents Department

Investigation at Transonic Speeds of the Effect of a Positive-Lift Balancing Tab on the Hinge-Moment and Lift-Characteristics of a Full-Span Flap on a Tapered 45 Degrees Sweptback Wing of Aspect Ratio 3

Description: Report presenting an investigation at transonic speeds to determine the control characteristics of a linked tab and flap. The control device consisted of an auxiliary lifting surface (tab) mounted on the end of a boom which was linked to a full-span flap. The tab was found to be capable of reducing the flap hinge moment to zero through the angle of attack and Mach number range tested.
Date: November 20, 1952
Creator: Lockwood, Vernard E. & Fikes, Joseph E.
Partner: UNT Libraries Government Documents Department

How to Create, Modify, and Interface Aspen In-House and User Databanks for System Configuration 1:

Description: The goal of this document is to provide detailed instructions to create, modify, interface, and test Aspen User and In-House databanks with minimal frustration. The level of instructions are aimed at a novice Aspen Plus simulation user who is neither a programming nor computer-system expert. The instructions are tailored to Version 10.1 of Aspen Plus and the specific computing configuration summarized in the Title of this document and detailed in Section 2. Many details of setting up databanks depend on the computing environment specifics, such as the machines, operating systems, command languages, directory structures, inter-computer communications software, the version of the Aspen Engine and Graphical User Interface (GUI), and the directory structure of how these were installed.
Date: October 27, 2000
Creator: Camp, D W
Partner: UNT Libraries Government Documents Department

How to Create, Modify, and Interface Aspen In-House and User Databanks for System Configuration 2:

Description: The goal of this document is to provide detailed instructions to create, modify, interface, and test Aspen User and In-House databanks with minimal frustration. The level of instructions are aimed at a novice Aspen Plus simulation user who is neither a programming nor computer-system expert. The instructions are tailored to Version 10.1 of Aspen Plus and the specific computing configuration summarized in the Title of this document and detailed in Section 2. Many details of setting up databanks depend on the computing environment specifics, such as the machines, operating systems, command languages, directory structures, inter-computer communications software, the version of the Aspen Engine and Graphical User Interface (GUI), and the directory structure of how these were installed.
Date: October 27, 2000
Creator: Camp, D W
Partner: UNT Libraries Government Documents Department