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Static and dynamic analyses on the MFTF-B vacuum vessel. Revision 1

Description: The Mirror Fusion Test Facility is a major magnetic fusion energy project at the Lawrence Livermore National Laboratory. An important component of this facility is the vacuum vessel, which forms the vacuum chamber. The vessel is supported on twenty-two pairs of legs that rest on reinforced concrete piers. In performing static and dynamic analyses on the vacuum vessel, we separately investigated the load distribution under gravity loads, pressure loads, electromagnetic loads, and thermal loads. … more
Date: January 15, 1984
Creator: Ng, D.S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The geometry of the Virasoro group for physicists

Description: Diff(S/sup 1/), the group of reparametrizations of the circle, is known as the Virasoro group in string theory. Reparametrizations keeping fixed a point of the circle form the quotient space Diff(S/sup 1/)S/sup 1/. The geometry of this space is relevant for string theory and string field theory. We describe this space as an infinite dimensional complex manifold with a Kaehler metric and compute ist Riemann tensor and its Ricci tensor. 7 refs
Date: November 1, 1987
Creator: Zumino, B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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BRUTE

Description: BRUTE is an algorithm to derive the implied boundary of a piecepart from the part's wireframe representation. BRUTE's input is an IGES file. The geometry is extracted and used to derive the edge-vertex (EV) topology. BRUTE then uses a divide-and-conquer method to derive all reasonable face-edge-vertex (FEV) topologies from the EV topology. The final step is to determine the geometry of each face by using the geometry of its edges. Any FEV topology that contains a face that is not a valid surfac… more
Date: May 1, 1982
Creator: Christensen, N.C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Stimulation model for lenticular sands: Volume 2, Users manual

Description: This User's Manual contains information for four fracture/proppant models. TUPROP1 contains a Geertsma and de Klerk type fracture model. The section of the program utilizing the proppant fracture geometry data from the pseudo three-dimensional highly elongated fracture model is called TUPROPC. The analogous proppant section of the program that was modified to accept fracture shape data from SA3DFRAC is called TUPROPS. TUPROPS also includes fracture closure. Finally there is the penny fracture a… more
Date: July 1, 1987
Creator: Rybicki, E.F.; Luiskutty, C.T.; Sutrick, J.S.; Palmer, I.D.; Shah, G.H. & Tomutsa, L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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High resolution seismic survey of the Hanna, Wyoming underground coal gasification area

Description: In November 1980 a high resolution seismic survey was conducted at the Department of Energy, Laramie Energy Technology Center's underground coal gasification test site near Hanna, Wyoming. The objectives of the survey were to determine the feasibility of utilizing high resolution seismic technology to locate and characterize underground coal burn zones and to identify shallow geologic faults at the test site. Seismic data acquisition and processing parameters were specifically designed to empha… more
Date: January 1, 1982
Creator: Youngberg, A.D.; Berkman, E. & Orange, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Construction of relativistic quantum theory: a progress report

Description: We construct the particulate states of quantum physics using a recursive computer program that incorporates non-determinism by means of locally arbitrary choices. Quantum numbers and coupling constants arise from the construction via the unique 4-level combinatorial hierarchy. The construction defines indivisible quantum events with the requisite supraluminal correlations, yet does not allow supraluminal communication. Measurement criteria incorporate c, h-bar and m/sub p/ or (not ''and'') G, c… more
Date: June 1, 1986
Creator: Noyes, H. Pierre
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Geometric perturbation theory and plasma physics

Description: Modern differential geometric techniques are used to unify the physical asymptotics underlying mechanics, wave theory and statistical mechanics. The approach gives new insights into the structure of physical theories and is suited to the needs of modern large-scale computer simulation and symbol manipulation systems. A coordinate-free formulation of non-singular perturbation theory is given, from which a new Hamiltonian perturbation structure is derived and related to the unperturbed structure.… more
Date: April 4, 1985
Creator: Omohundro, S.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Properties of radioactive wastes and waste containers. Quarterly progress report, April-June 1981

Description: An empirical relationship has been developed to estimate the cumulative fractional releases of /sup 137/Cs from simulated waste forms as a function of leaching time and the geometric surface-to-volume ratios. Data from an ongoing leaching study were used. The simulated waste forms consisted of organic cation exchange resins solidified in Portland I cement at a waste-to-cement ratio of 0.6 and water-to-cement ratio of 0.4. The nominal specimen dimensions were: 1-inch diameter x 1-inch high, 2-in… more
Date: November 1, 1981
Creator: Morcos, N. & Weiss, A.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Present capabilities and new developments in antenna modeling with the numerical electromagnetics code NEC

Description: Computer modeling of antennas, since its start in the late 1960's, has become a powerful and widely used tool for antenna design. Computer codes have been developed based on the Method-of-Moments, Geometrical Theory of Diffraction, or integration of Maxwell's equations. Of such tools, the Numerical Electromagnetics Code-Method of Moments (NEC) has become one of the most widely used codes for modeling resonant sized antennas. There are several reasons for this including the systematic updating a… more
Date: April 8, 1988
Creator: Burke, G. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Quadric solids and computational geometry

Description: As part of the CAD-CAM development project, this report discusses the mathematics underlying the program QUADRIC, which does computations on objects modeled as Boolean combinations of quadric half-spaces. Topics considered include projective space, quadric surfaces, polars, affine transformations, the construction of solids, shaded image, the inertia tensor, moments, volume, surface integrals, Monte Carlo integration, and stratified sampling. 1 figure.
Date: July 25, 1980
Creator: Emery, J.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Status of Monte Carlo at Los Alamos

Description: Four papers were presented by Group X-6 on April 22, 1980, at the Oak Ridge Radiation Shielding Information Center (RSIC) Seminar-Workshop on Theory and Applications of Monte Carlo Methods. These papers are combined into one report for convenience and because they are related to each other. The first paper (by Thompson and Cashwell) is a general survey about X-6 and MCNP and is an introduction to the other three papers. It can also serve as a resume of X-6. The second paper (by Godfrey) explain… more
Date: May 1, 1980
Creator: Thompson, W. L.; Cashwell, E. D.; Godfrey, T. N. K.; Schrandt, R. G.; Deutsch, O. L. & Booth, T. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Electromagnetic fields in an axial symmetric waveguide with variable cross section

Description: A new class of separable variables is found which allows one to find an approximate analytical solution of the Maxwell equations for axial symmetric waveguides with slow (but not necessarily small) varying boundary surfaces. An example of the solution is given. Possible applications and limitations of this approach are discussed.
Date: July 1, 1980
Creator: Kheifets, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Factors controlling reservoir quality in tertiary sandstones and their significance to geopressured geothermal production

Description: Variable intensity of diagenesis is the factor primarily responsible for contrasting regional reservoir quality of Tertiary sandstones from the upper and lower Texas coast. Detailed comparison of Frio sandstone from the Chocolate Bayou/Danbury Dome area, Brazoria County, and Vicksburg sandstones from the McAllen Ranch Field area, Hidalgo County, reveals that extent of diagenetic modification is most strongly influenced by (1) detrital mineralogy and (2) regional geothermal gradients. The region… more
Date: January 1, 1981
Creator: Loucks, R. G.; Richmann, D. L. & Milliken, K. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Accurate monotonicity-preserving cubic interpolation

Description: A simple and effective algorithm to construct a monotonicity-preserving cubic Hermite interpolant for data with rapid variations is presented. Constraining the derivatives of the interpolant according to geometric considerations makes the interpolant consistent with local monotonicity properties of the data. Numerical examples are given that compare the quality and accuracy of the proposed interpolation method with other standard interpolants.
Date: February 1, 1982
Creator: Hyman, J. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Analysis of fluid-structure interaction and structural response of Chernobyl-4 reactor

Description: On April 26, 1986, an accident occurred at the Chernobyl-4 Nuclear Power Plant in the Soviet Union. A post accident meeting was held in Vienna during the week of August 25, 1986. In mid-July 1986, the DOE formed a team to analyze the accident, including experts from the national laboratories such as Argonne National Laboratory, Brookhaven National Laboratory, Oak Ridge National Laboratory, and Pacific Northwest Laboratory. The goal was to assess the information's plausibility, provided analytic… more
Date: January 1, 1989
Creator: Wang, C. Y.; Pizzica, P. A.; Gvildys, J. & Spencer, B. W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Fundamentals of solar access

Description: The following aspects of solar access are discussed: solar geometry, topography, orientation, trees and vegetation, design options, and legal questions. (MHR)
Date: July 1, 1981
Creator: Levin, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Power reactor embrittlement data base

Description: Regulatory and research evaluations of embrittlement prediction models and of vessel integrity under load can be greatly expedited by the use of a well-designed, computerized embrittlement data base. The Power Reactor Embrittlement Data Base (PR-EDB) is a comprehensive collection of data from surveillance reports and other published reports of commercial nuclear reactors. The uses of the data base require that as many different data as available are collected from as many sources as possible wi… more
Date: January 1, 1989
Creator: Kam, F.B.K.; Stallmann, F.W. & Wang, J.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Magnetic design of the axisymmetric throttle-coil addition to the tandem mirror experiment-upgrade

Description: The TMX-U magnet set has incorporated new axisymmetric throttle coils and fan-reversing transition magnets. This new magnet geometry, which will allow for the experimental verification of new physics issues related to axicell tandem mirrors, encompasses both engineering and physics considerations. Engineering considerations include structural integrity plus neutral beam and diagnostic access. Physics issues include the stability and radial transport of the confined plasma. We have calculated th… more
Date: November 28, 1983
Creator: Wong, R.L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Probabilistic evaluation of main coolant pipe break indirectly induced by earthquakes: Savannah River Project L and P Reactors

Description: A probabilistic evaluation of seismically-induced indirect pipe break for the Savannah River Project (SRP) L- and P-Reactor main coolant (process water) piping has been conducted. Seismically-induced indirect pipe break can result primarily from: (1) failure of the anchorage of one or more of the components to which the pipe is anchored; or (2) failure of the pipe due to collapse of the structure. The potential for both types of seismically-induced indirect failures was identified during a seis… more
Date: January 1, 1989
Creator: Short, S.A.; Wesley, D.A.; Awadalla, N.G.; Kennedy, R.P. (Impell Corp., Mission Viejo, CA (USA); Westinghouse Savannah River Co., Aiken, SC (USA) & Structural Mechanics Consulting, Inc., Yorba Linda, CA (USA))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Hot dry rock geothermal reservoir engineering

Description: Two wells, GT-2 and EE-1, were originally drilled to a depth of 9600 ft (2.93 km) and 10,000 ft (3.05 km), respectively, and, after some difficulties, including redrilling of the bottom portion of GT-2, a good fracture connection was made between EE-1 and GT-2B, as the modified GT-2 was called. The circulation system was studied extensively for the purpose of establishing a number of fracture properties. Techniques were developed to determine orientation, geometry, heat exchange area, volume, f… more
Date: January 1, 1980
Creator: Aamodt, R. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Niobium 1% zirconium/potassium and titanium/potassium life-test heat pipe design and testing

Description: Experimental lifetime performance studies currently in progress use Niobium-1% Zirconium (Nb-1Zr) and Titanium (Ti) heat pipes with potassium (K) as the working fluid. A heat pipe life-test matrix has been developed for testing the heat pipes. Because the corrosion rates in alkali metal heat pipes are affected by temperature and working fluid evaporation flux, the variable parameters of the experimental matrix are established as steady operating temperature and input heat flux density. Total im… more
Date: January 1, 1989
Creator: Sena, J.T. & Merrigan, M.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Spin spectrometer at the holified heavy-ion research facility and some planned experiments

Description: The 4..pi.. multidetector ..gamma..-ray spectrometer at the Holified Heavy-ion Research Facility (HHIRF) is described in some detail. The following important features of this spectrometer are discussed: (a) the geometric arrangement, (b) the actual performance of the individual detector elements, (c) the associated electronics and data acquisition system, and (d) the response of the system to input ..gamma..-cascades including the effect of crystal-to-crystal scattering and the response to neut… more
Date: January 1, 1980
Creator: Sarantites, D.G.; Jaaskelainen, M.; Hood, J.T.; Woodward, R.; Barker, J.H.; Hensley, D.C. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Condenser designs for binary power cycles

Description: For the past four years, work has been in progress at ORNL to develop improved condensers for geothermal binary power cycles. The work has centered on optimizing the design variables associated with fluted surfaces on vertical tubes and comparing the tube performance with available enhanced tubes either for vertical or horizontal operation. Data with seven fluids including a hydrocarbon, fluorocarbons, and ammonia condensing on up to 30 different tubes have been obtained. Data for tubes of diff… more
Date: January 1, 1980
Creator: Michel, J. W. & Murphy, R. W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Influence of Geometry on Natural Convection in Buildings

Description: Strong free convection airflows occur within passive solar buildings resulting from elevated temperatures of surfaces irradiated by solar energy compared with the cooler surfaces not receiving radiation. The geometry of a building has a large influence on the directions and magnitudes of natural airflows, and thus heat transfer between zones. This investigation has utilized a variety of reduced-scale building configurations to study the effects of geometry on natural convection heat transfer. S… more
Date: January 1, 1985
Creator: White, M. D.; Winn, C. B.; Jones, G. F. & Balcomb, J. D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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