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Simulation of hanging file experiments with CALOR89

Description: This note presents the comparison of CALOR89 simulation with the hanging file'' test measurements conducted at Fermilab during the period of Sep 91--Jan 92. The purpose of this study is to benchmark CALOR89 code against the experimental data to enhance its reliability and predictive power. Seven hanging file configurations were simulated. The measured values of e/{pi} ratio (the ratio of electron to pion signal at the same energy), hadronic and electromagnetic resolutions were compared with the… more
Date: January 1, 1992
Creator: Job, P.K.; Price, L.E.; Proudfoot, J. (Argonne National Lab., IL (United States). High Energy Physics Div.); Handler, T. (Tennessee Univ., Knoxville, TN (United States)) & Gabriel, T.A. (Oak Ridge National Lab., TN (United States))
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Evaluation of a Cray performance tool using a large hydrodynamics code

Description: This paper will discuss one of these automatic tools that has been developed recently by Cray Research, Inc. for use on its parallel supercomputer. The tool is called ATEXPERT; when used in conjunction with the Cray Fortran compiling system, CF77, it produces a parallelized version of a code based on loop-level parallelism, plus information to enable the programmer to optimize the parallelized code and improve performance. The information obtained through the use of the tool is presented in an … more
Date: January 1, 1992
Creator: Lord, K.M. (Cray Research, Inc., Eagan, MN (United States)) & Simmons, M.L. (Los Alamos National Lab., NM (United States))
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Partner: UNT Libraries Government Documents Department
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Investigation of Celotex trademark charring depths in the DT-18 shipping container

Description: Celotex {trademark}, the insulating material used between the outer and inner containers of the DT-18 shipping package, undergoes decomposition, combustion, or both when heated to temperatures exceeding 150{degrees}C. Several DT-18 packages that had previously undergone hypothetical thermal accident testing were opened and Celotex {trademark} charring depths ranging from {1/2} to 1 {1/2} in. were recorded. The majority of char depth data taken was between 3/4 and 1 {1/4} in. One-dimensional HEA… more
Date: March 1, 1992
Creator: Anderson, J.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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ADIFOR: Automatic differentiation in a source translator environment

Description: The numerical methods employed in the solution of many scientific computing problems require the computation of derivatives of a function f: R{sup n} {yields} R{sup m}. ADIFOR (Automatic Differentiation in FORtran) is a source transformation tool that accepts Fortran 77 code for the computation of a function and writes portable Fortran 77 code for the computation of the derivatives. In contrast to previous approaches, ADIFOR views automatic differentiation as a source transformation problem and… more
Date: January 1, 1992
Creator: Bischof, C.; Corliss, G.; Griewank, A. (Argonne National Lab., IL (United States)) & Carle, A. (Rice Univ., Houston, TX (United States). Center for Research on Parallel Computation)
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Partner: UNT Libraries Government Documents Department
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Frequency-domain stress prediction algorithm for the LIFE2 fatigue analysis code

Description: The LIFE2 computer code is a fatigue/fracture analysis code that is specialized to the analysis of wind turbine components. The numerical formulation of the code uses a series of cycle mount matrices to describe the cyclic stress states imposed upon the turbine. However, many structural analysis techniques yield frequency-domain stress spectra and a large body of experimental loads (stress) data is reported in the frequency domain. To permit the analysis of this class of data, a Fourier analysi… more
Date: January 1, 1992
Creator: Sutherland, H. J.
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Partner: UNT Libraries Government Documents Department
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CGVIEW: A program to generate isometric and perspective views of combinatorial geometries

Description: The prototype of a graphical debugger for combinatorial geometry (CG) is described. The prototype debugger consists of two parts: a FORTRAN-based view'' generator and a Microsoft Windows application for displaying the geometry. This document describes the code CGVIEW, which comprises the first part of the system. User-specified options permit the selection of an arbitrary viewpoint in space and the generation of either an isometric or perspective view. Additionally, any combination of zones, ma… more
Date: July 1, 1992
Creator: Burns, T.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Validated heat-transfer and pressure-drop prediction methods based on the discrete element method: Phase 1, Three-dimensiional roughness

Description: A computer program based on the discrete element method has been developed and validated to compute friction factors and Nusselt numbers for fully developed turbulent flow and heat transfer in pipes with three-dimensional roughness elements. Computational results are compared with appropriate cases from heat transfer experiments in the literature. The predictions were in general in very good agreement with the experimental data.
Date: February 1, 1992
Creator: Taylor, R.P. & Hodge, B.K. (Mississippi State Univ., MS (United States). Dept. of Mechanical and Nuclear Engineering)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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ADIFOR: Fortran source translation for efficient derivatives

Description: The numerical methods employed in the solution of many scientific computing problems require the computation of derivatives of a function f: R{sup n} {yields} R{sup m}. Both the accuracy and the computational requirements of the derivative computation are usually of critical importance for the robustness and speed of the numerical method. ADIFOR (Automatic Differentiation In FORtran) is a source translation tool implemented using the data abstractions and program analysis capabilities of the Pa… more
Date: January 1, 1992
Creator: Bischof, C.; Corliss, G.; Griewank, A.; Hovland, P. (Argonne National Lab., IL (United States)) & Carle, A. (Rice Univ., Houston, TX (United States). Center for Research on Parallel Computation)
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Oracle and the end-user: Practical implementation of applications in a multi-user, multi-platform environment

Description: This presentation will describe methods used to develop a standard user-interface to ORACLE applications, to train users, and document these systems in a diverse multi-user, multi-platform environment. Implementation and documentation of applications and training of users can be difficult when the end-users have diverse levels of computer proficiency and work with a multiple array of hardware platforms. We will discuss common problems encountered in such an environment and the approaches used t… more
Date: January 1, 1992
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Partner: UNT Libraries Government Documents Department
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Fission gas bubble nucleated cavitational swelling of the alpha-uranium phase of irradiated U-Pu-Zr fuel

Description: Cavitational swelling has been identified as a potential swelling mechanism for the alpha uranium phase of irradiated U-Pu-Zr metal fuels for the Integral Fast Reactor being developed at Argonne National Laboratory. The trends of U-Pu-Zr swelling data prior to fuel cladding contact can be interpreted in terms of unrestrained cavitational driven swelling. It is theorized that the swelling mechanisms at work in the alpha uranium phase can be modeled by single vacancy and single interstitial kinet… more
Date: April 1, 1992
Creator: Rest, J.
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Partner: UNT Libraries Government Documents Department
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Analytical and experimental studies of heat pipe radiation cooling of hypersonic propulsion systems

Description: Preliminary, research-oriented, analytical and experimental studies were completed to assess the feasibility of using high-temperature heat pipes to cool hypersonic engine components. This new approach involves using heat pipes to transport heat away from the combustor, nozzle, or inlet regions, and to reject it to the environment by thermal radiation from an external heat pipe nacelle. For propulsion systems using heat pipe radiation cooling (HPRC), it is possible to continue to use hydrocarbo… more
Date: January 1, 1992
Creator: Martin, R.A.; Merrigan, M.A.; Elder, M.G.; Sena, J.T.; Keddy, E.S. (Los Alamos National Lab., NM (United States)) & Silverstein, C.C. (CCS Associates, Bethel Park, PA (United States))
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Partner: UNT Libraries Government Documents Department
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A comparison of three self-tuning control algorithms developed for the Bristol-Babcock controller

Description: A brief overview of adaptive control methods relating to the design of self-tuning proportional-integral-derivative (PID) controllers is given. The methods discussed include gain scheduling, self-tuning, auto-tuning, and model-reference adaptive control systems. Several process identification and parameter adjustment methods are discussed. Characteristics of the two most common types of self-tuning controllers implemented by industry (i.e., pattern recognition and process identification) are su… more
Date: April 1, 1992
Creator: Tapp, P.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Correlation of analysis with high level vibration test results for primary coolant piping

Description: Dynamic tests on a modified 1/2.5-scale model of pressurized water reactor (PWR) primary coolant piping were performed using a large shaking table at Tadotsu, Japan. The High Level Vibration Test (HLVT) program was part of a cooperative study between the United States (Nuclear Regulatory Commission/Brookhaven National Laboratory, NRC/BNL) and Japan (Ministry of International Trade and Industry/Nuclear Power Engineering Center). During the test program, the excitation level of each test run was … more
Date: January 1, 1992
Creator: Park, Y.J.; Hofmayer, C.H. (Brookhaven National Lab., Upton, NY (United States)) & Costello, J.F. (Nuclear Regulatory Commission, Washington, DC (United States))
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Partner: UNT Libraries Government Documents Department
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Beam characterization at the Neutron Radiography Facility (NRAD)

Description: An ongoing project to characterize the neutron beams at the Neutron Radiography Reactor (NRAD) is described in this paper. The effort has consisted of computer modelling with three dimensional diffusion theory to obtain a trail spectrum, foil activation measurements, and the use of SAND-II unfolding code. It was expected and found that diffusion theory will underpredict the fast flux. However, it is claimed that precise characterization of the entire spectrum is not necessary for comparisons am… more
Date: January 1, 1992
Creator: Imel, G.R. & Urbatsch, T.
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Partner: UNT Libraries Government Documents Department
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Program RELAX: A code designed to calculate atomic relaxation spectra of x-rays and electrons

Description: The code RELAX is designed to calculate atomic relaxation spectra of X-rays and electrons due to bound-bound transitions. This calculation is based on the atomic transition data contained in the Livermore Evaluated Atomic Data Library (EADL). The results produced by this code for fluorescence yield vs. atomic number (Z) have been published in Tables and Graphs of Atomic Subshell and Relaxation Data Derived from the LLNL Evaluated Atomic Data Library (EADL), z = 1--100{double prime}, UCRL-50400,… more
Date: March 20, 1992
Creator: Cullen, D.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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An automated tool for evaluating compliance and providing assistance with building energy standards during design

Description: In an effort to encourage the maximum cost-effective level of energy efficiency in new building design, energy-efficiency standards have become more location-specific and performance-based. As a result, standards often provide more than one path for ensuring and demonstrating that a design complies, but at the cost of increased complexity. In addition, the burden of remedying a noncompliant design rests on the designers' knowledge and experience, with only general guidance provided by the stand… more
Date: April 30, 1992
Creator: Quadrel, R.W.; Brambley, M.R. & Stratton, R.C.
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Partner: UNT Libraries Government Documents Department
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A dynamic menuing and security system

Description: Commonly, a system creator will seek to limit access to various parts of an information system based on the user is and what authorities should be granted that person. With a payroll system, it would be expected that only a limited number of people would be able to change data, a larger segment of managers would be able to view information on their particular department, and perhaps everyone would be able to see their own information. This sort of situation presents an interesting problem for t… more
Date: January 1, 1992
Creator: Koon, D.M. & Zowin, J. A.
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Partner: UNT Libraries Government Documents Department
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Instrumentation of dynamic gas pulse loading system

Description: The overall goal of this work is to further develop and field test a system of stimulating oil and gas wells, which increases the effective radius of the well bore so that more oil can flow into it, by recording pressure during the gas generation phase in real time so that fractures can be induced more predictably in the producing formation. Task 1: Complete the laboratory studies currently underway with the prototype model of the instrumentation currently being studied. Task 2: Perform field t… more
Date: April 14, 1992
Creator: Mohaupt, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Certification process of safety analysis and risk management computer codes at the Savannah River Site

Description: The commitment by Westinghouse Savannah River Company (WSRC) to bring safety analysis and risk management codes into compliance with national and sitewide quality assurance requirements necessitated a systematic, structured approach. As a part of this effort, WSRC, in cooperation with the Westinghouse Hanford Company, has developed and implemented a certification process for the development and control of computer software. Safety analysis and risk management computer codes pertinent to reactor… more
Date: January 1, 1992
Creator: Ades, M.J. (Westinghouse Savannah River Co., Aiken, SC (United States)); Toffer, H.; Lewis, C.J. & Crowe, R.D. (Westinghouse Hanford Co., Richland, WA (United States))
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Partner: UNT Libraries Government Documents Department
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Yaw dynamics of horizontal axis wind turbines

Description: Designers of a horizontal axis wind turbine yaw mechanism are faced with a difficult decision. They know that if they elect to use a yaw- controlled rotor then the system will suffer increased initial cost and increased inherent maintenance and reliability problems. On the other hand, if they elect to allow the rotor to freely yaw they known they will have to account for unknown and random, though bounded, yaw rates. They will have a higher-risk design to trade-off against the potential for cos… more
Date: May 1, 1992
Creator: Hansen, A.C. (Utah Univ., Salt Lake City, UT (United States))
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Some computational challenges of developing efficient parallel algorithms for data-dependent computations in thermal-hydraulics supercomputer applications

Description: The Transient Reactor Analysis Code (TRAC), which features a two- fluid treatment of thermal-hydraulics, is designed to model transients in water reactors and related facilities. One of the major computational costs associated with TRAC and similar codes is calculating constitutive coefficients. Although the formulations for these coefficients are local the costs are flow-regime- or data-dependent; i.e., the computations needed for a given spatial node often vary widely as a function of time. C… more
Date: January 1, 1992
Creator: Woodruff, S.B.
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Partner: UNT Libraries Government Documents Department
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Unix version of CALOR89 for calorimeter applications

Description: CALOR89 is a system of coupled Monte Carlo particle transport computer codes which has been successfully employed for the estimation of calorimeter parameters in High Energy Physics. In the past CALOR89 has been running on various IBM machines and on CRAY X-MP at Lawrence Livermore Lab. These machines had non-unix operating systems. In this report we present a UNIX version of CALOR89, which is especially suited for the UNIX work stations. Moreover CALOR89 is also been supplemented with two new … more
Date: May 12, 1992
Creator: Handler, T. (Tennessee Univ., Knoxville, TN (United States). Dept. of Physics and Astronomy); Job, P.K.; Price, L.E. (Argonne National Lab., IL (United States). High Energy Physics Div.) & Gabriel, T.A. (Oak Ridge National Lab., TN (United States))
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Improved numerical grid generation techniques for the B2 edge plasma code

Description: Techniques used to generate grids for edge fluid codes such as B2 from numerically computed equilibria are discussed. Fully orthogonal, numerically derived grids closely resembling analytically prescribed meshes can be obtained. But, the details of the poloidal field can vary, yielding significantly different plasma parameters in the simulations. The magnitude of these differences is consistent with the predictions of an analytic model of the scrape-off layer. Both numerical and analytic grids … more
Date: June 1, 1992
Creator: Stotler, D. P. & Coster, D. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Release model for in situ vitrification large-field test off-gas treatment system

Description: A conceptual model for the vapor and aerosol transport and deposition in the in situ vitrification large-field test off-gas system (OGS) has been developed. This model can be used to predict the emissions from the OGS under normal and off-normal conditions. Results generated by the model can be used to evaluate design and/or procedural modifications, define tests, and predict results. The OGS vapor and aerosol transport and deposition is modeled using the PULSE/MOD-ISV/VER 1.0.0 developmental c… more
Date: March 1, 1992
Creator: Pafford, D.J. & Tung, V.X.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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