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368
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201
United States Geological Survey Reports
186
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125
United States Department of Energy Grand Junction Office Reports
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2,617 Matching Results
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Leakage-Flow-Induced Vibration of a Tube-in-Tube Slip Joint
The susceptibility of a cantilevered tube conveying water to self-excitation by leakage flow through a slip joint is assessed experimentally. The slip joint is formed by inserting a smaller, rigid tube into the free end of the cantilevered tube. Variations of the slip joint annular gaps and engagement lengths are tested, and several mechanisms for self-excitation are described.
Date:
June 1983
Creator:
Mulcahy, T. M.
Object Type:
Report
System:
The UNT Digital Library
Seasonal-Storage Solar-Energy Heating System for the Charlestown, Boston Navy Yard National Historic Park
This Phase II study provides further analysis for a seasonal-storage solar-heating system utilizing two existing underground, concrete tanks in the National Historic Park of the Charlestown Navy Yard in Boston. The initial Phase I study was reported in ANL-82-90. The new results focus on the effect of including a heat pump in the system to extend the useful heat-storage capacity of the tanks. The analysis was performed with MINSUN Version III, a computer simulation model written particularly for seasonal storage systems. Input parameters were derived in Phase I and reviewed and updated for this study. Three collector types were studied with and without a heat pump. Results indicate a definite performance and economic improvement for all collector types by including the heat pump. Flat plate collectors showed substantially greater improvement due to their more pronounced increase in efficiency at the lower inlet temperatures. With the heat pump, all three collectors provide comparable performance, and the flat plates were chosen as the design system due to their lower cost. A design system of 2300 meters sq. flat plate collectors with heat pump was selected. The system provides a solar fraction of 50% for the 2167 MWH annual heat load. The annualized …
Date:
June 1983
Creator:
Breger, Dwayne & Michaels, Allan I.
Object Type:
Report
System:
The UNT Digital Library
Endochronic Theory of Dynamic Viscoplasticity
This report summarizes the work completed on a project concerned with engineering models in dynamic plasticity. The concept of the endochronic theory of viscoplasticity and its subsequent improvement are discussed briefly. Applications and extensions of the theory to various dynamic problems are presented. In particular, the strain-rate effect in the improved endochronic theory and its application to wave propagation problems are discussed. Comparing the numerical results with other calculations and experimental data, it appears that endochronic theory provides a promising representation of realistic material behavior. At the same time endochronic theory is often numerically more efficient than other formulations.
Date:
June 1983
Creator:
Lin, Hsuan-Chi
Object Type:
Report
System:
The UNT Digital Library
ANL Technical Support Program for DOE Environmental Restoration and Waste Management
A program was established for DOE Environmental Restoration and Waste Management (EM) to evaluate factors that are anticipated to affect waste glass reaction during repository disposal, especially in an unsaturated environment typical of what may be expected for the proposed Yucca Mountain repository site.
Date:
June 1994
Creator:
Bates, John K.; Bourcier, W. L.; Bradley, C. R.; Brown, N. R.; Buck, E. C.; Carroll, S. A. et al.
Object Type:
Report
System:
The UNT Digital Library
ANL Technical Support Program for DOE Environmental Restoration and Waste Management Annual Report October 1993 - September 1994
A program was established for DOE Environmental Restoration and Waste Management (EM) to evaluate factors that are anticipated to affect waste glass reaction during repository disposal, especially in an unsaturated environment typical of what may be expected for the proposed Yucca Mountain repository site.
Date:
June 1995
Creator:
Bates, John K.
Object Type:
Report
System:
The UNT Digital Library
A Comparative Study of Iron-, Nickel-, and Cobalt-Base Weldments Exposed in TVA 20-MW and Rocketdyne Atmospheric Fluidized Bed Combustors
Experimental iron-, nickel-, and cobalt-base weldment materials were exposed in TVA 20-MW and Rocketdyne atmospheric fluidized bed combustors (AFBCs) at 849 degrees C for 1261 h and 871 degrees C for 1000 h, respectively. Post-exposure analyses were conducted at Argonne National Laboratory. All specimens experienced different degrees of internal oxidation/sulfidation. Among eight filler materials, Marathon 25/35R and Haynes 188 showed the least corrosion attack, i.e., less than 0.5 mm/yr. A high nickel content in the weldment was unfavorable for corrosion resistance in the AFBC environment. Differences in the coal/bed chemistry of the TVA and Rocketdyne systems yielded different corrosion behavior in the materials. Calcium sulfate deposits on the specimens significantly affected the internal oxidation/sulfidation of the alloys. The results of this study supplement the material data base, in particular that of weldment performance, and aid in materials selection for AFBC applications.
Date:
June 1990
Creator:
Wang, D. Y. & Natesan, K.
Object Type:
Report
System:
The UNT Digital Library
Physics Division Annual Review: April 1, 1990-March 31, 1991
Annual report of activities of the Argonne National Laboratory Physics Division, including research at ATLAS, medium-energy nuclear physics, theoretical nuclear physics, and atomic and molecular physics.
Date:
June 1991
Creator:
Argonne National Laboratory. Physics Division.
Object Type:
Report
System:
The UNT Digital Library
Measuring the Absolute Disintegration Rate of a Radioactive Gas with a Moveable Endplate Discharge Counter (MEP) and Theoretical Calculation of Wall Effect
A precision built moveable endplate Geiger-Mueller counter was used to measure the absolute disintegration rate of a beta-emitting radioactive gas. A Geiger-Mueller counter used for measuring gaseous radioactivity has <100% counting efficiency owing to two factors: (1) ''end effect, '' due to decreased and distorted fields at the ends where wire-insulator joints are placed, and (2) ''wall effect, '' due to non-ionization by beta particles emitted near to and heading into the wall. The end effect was evaluated by making one end of the counter movable and measuring counting rates at a number of endplate positions. Much of the wall effect was calculated theoretically, based on known data for primary ionization of electrons as a function of energy and gas composition. Corrections were then made for the ''shakeoff'' effect in beta decay and for backscattering of electrons from the counter wall. Measurements and calculations were made for a sample of krypton-85 (beta energy, 0.67 MeV). The wall effect calculation is readily extendable to other beta energies.
Date:
June 1986
Creator:
Jaffey, Arthur H.; Gray, James; Bentley, William C. & Lerner, Jerome L.
Object Type:
Report
System:
The UNT Digital Library
Stress Corrosion Cracking of Candidate Waste Container Materials: Final Report
Six alloys have been selected as candidate container materials for the storage of high-level nuclear waste at the proposed Yucca mountain site in Nevada. These materials are Type 304L stainless steel (SS). Type 316L SS, Incoloy 825, phosphorus-deoxidized Cu, Cu-30%Ni, and Cu-7%Al. The present program has been initiated to determine whether any of these materials can survive for 300 years in the site environment without developing through-wall stress corrosion cracks. and to assess the relative resistance of these materials to stress corrosion cracking (SCC)- A series of slow-strain-rate tests (SSRTs) and fracture-mechanics crack-growth-rate (CGR) tests was performed at 93(degree)C and 1 atm of pressure in simulated J-13 well water. This water is representative, prior to the widespread availability of unsaturated-zone water, of the groundwater present at the Yucca Mountain site.
Date:
June 1992
Creator:
Park, J. Y.; Malya, P. S.; Soppet, W. K.; Diercks, D. R.; Shack, W. J. & Kassner, T. F.
Object Type:
Report
System:
The UNT Digital Library
Development of a Small-Channel Nucleate-Boiling Heat Transfer Correlation
Development of an improved semi-mechanistic-based set of correlation parameters for nucleation-dominant flow-boiling heat transfer in small channels is described.
Date:
June 1994
Creator:
Kasza, Kenneth Edmund & Wambsganss, M. W.
Object Type:
Report
System:
The UNT Digital Library
Motion-Dependent Fluid Forces Acting on Tube Arrays in Crossflow
Motion-dependent fluids forces acting on a tube array were measured as a function of excitation frequency, excitation amplitude, and flow velocity. Fluid-damping and fluid-stiffness coefficients were obtained from measured motion-dependent fluid forces as a function of reduced flow velocity and excitation amplitude. The water channel and test setup provide a sound facility for obtaining key coefficients for fluid-elastic instability of tube arrays in crossflow. Once the guideline, based on the unsteady flow theory, can be developed for fluid-elastic instability of tube arrays crossflow.
Date:
June 1993
Creator:
Chen, Shoei-Sheng; Zhu, S. & Jendrzejczyk, J. A.
Object Type:
Report
System:
The UNT Digital Library
Experiment on Fluidelastic Instability of Loosely Supported Tube Arrays in Crossflow
A tube array supported by baffle plates in crossflow may be subjected to fluid-elastic instability in the tube-support-plate-inactive mode. An experimental study is presented to characterize the tube motion. Three series of tests were performed to measure tube displacements as a function of flow velocity for different clearances. The motion was examined by root-mean-square values of tube displacements, power spectral densities, phase planes, Poincare maps, and Lyapunov exponents. The experimental data agree reasonably well with the analytical model, based on the unsteady flow theory.
Date:
June 1993
Creator:
Chen, Shoei-Sheng; Zhu, S. & Cai, Y.
Object Type:
Report
System:
The UNT Digital Library
Users manual for the Chameleon Parallel Programming Tools
Message passing is a common method for writing programs for distributed-memory parallel computers. Unfortunately, the lack of a standard for message passing has hampered the construction of portable and efficient parallel programs. In an attempt to remedy this problem, a number of groups have developed their own message-passing systems, each with its own strengths and weaknesses. Chameleon is a second-generation system of this type. Rather than replacing these existing systems, Chameleon is meant to supplement them by providing a uniform way to access many of these systems. Chameleon`s goals are to (a) be very lightweight (low over-head), (b) be highly portable, and (c) help standardize program startup and the use of emerging message-passing operations such as collective operations on subsets of processors. Chameleon also provides a way to port programs written using PICL or Intel NX message passing to other systems, including collections of workstations. Chameleon is tracking the Message-Passing Interface (MPI) draft standard and will provide both an MPI implementation and an MPI transport layer. Chameleon provides support for heterogeneous computing by using p4 and PVM. Chameleon`s support for homogeneous computing includes the portable libraries p4, PICL, and PVM and vendor-specific implementation for Intel NX, IBM EUI (SP-1), and …
Date:
June 1993
Creator:
Gropp, William & Smith, Barry
Object Type:
Report
System:
The UNT Digital Library
Preliminary Plan for Treating Mixed Waste
A preliminary waste treatment plan was developed for disposing of radioactive inorganic liquid wastes that contain hazardous metals and/or hazardous acid concentrations at Argonne National Laboratory. This plan, which involves neutralization and sulfide precipitation followed by filtration, reduces the concentration of hazardous metals and the acidity so that the filtrate liquid is simply a low-level radioactive waste that can be fed to a low-level waste evaporator.
Date:
June 1993
Creator:
Vandegrift, G. F.; Conner, C.; Hutter, Joseph C.; Leonard, R. A.; Nuñez, Luis; Sedlet, J. et al.
Object Type:
Report
System:
The UNT Digital Library
Proceedings of the 1978 Symposium on Instrumentation and Control for Fossil Demonstration Plants : June 19-21, 1978, Newport Beach Marriott, Newport Beach, California
This conference covers various aspects of fossil-fuel power plants based on coal or coal-conversion products, as well as the process control equipment involved in the conversion or combustion processes.
Date:
June 1978
Creator:
Argonne National Laboratory
Object Type:
Report
System:
The UNT Digital Library
Radiological and Environmental Research Division Annual Report: Part 2, Center for Human Radiobiology, July 1977-June 1978
Annual report of the Argonne National Laboratory Radiological and Environmental Research Division regarding activities related to the Center for Human Radiobiology.
Date:
June 1978
Creator:
Rowland, R. E.
Object Type:
Report
System:
The UNT Digital Library
Low-Frequency Fatigue-Crack Propagation in Type 304 Stainless Steel at 482 and 593°C
This report presents results from an investigation on the low-frequency fatigue-crack growth behavior of Type 304 stainless steel at 482 and 593 C. Included were continuous-cycling tests with a triangular loading waveform, waveshape-effects tests employing slow-fast, fast-slow and square waveforms, creep-crack growth rate tests, and a block-loading test. The results are compared with similar test data from the literature, and the block-loading test results are compared with results predicted by integrating the relations for da/dN obtained under constant conditions.
Date:
June 1980
Creator:
Raske, D. T.
Object Type:
Report
System:
The UNT Digital Library
Time-Independent One-Speed Neutron Transport Equation with Anisotropic Scattering in Absorbing Media
This report treats the time-independent, one-speed neutron transport equation with anisotropic scattering in absorbing media. For nuclear gain operators existence and uniqueness of solutions to the half-space and finite-slab problems are proved in Lâ‚‚-space. The formulas needed for explicit calculations are derived by the use of perturbation theory techniques.
Date:
June 1980
Creator:
Hangelbroek, Rutger Jan
Object Type:
Report
System:
The UNT Digital Library
The Proceedings of the 1980 Symposium on Instrumentation and Control for Fossil Energy Processes : June 9-11, 1980, New Cavalier, Virginia Beach, Virginia
This proceedings covers instruments and process control involved in the conversion of fossil fuels into synthetic fuels, spurred in part by response to the energy crisis of the 1970s and attending inflation.
Date:
June 1980
Creator:
Doering, R. W.
Object Type:
Report
System:
The UNT Digital Library
Preliminary Study, Isotopic Safeguards Techniques (IST), LMFBR Fuel Cycles
This memorandum presents the preliminary results of the effort to investigate the applicability of isotope correlation techniques (ICT), formulated for the LWR system, to the LMFBR fuel cycle. The detailed isotopic compositional changes with burnup developed for the CRBR was utilized as the reference case. This differs from the usual LMFBR design studies in that the core uranium is natural uranium rather than depleted. Nevertheless, the general isotopic behavior should not differ significantly and does allow an initial insight into the expected behavior of isotopic correlations for the LMFBR power systems such as: the U.K. PFR and reprocessing plant; the French Phenix and Superphenix; and the US reference conceptual design studies (CDS) of homogeneous and heterogeneous LMFBR systems as they are developed.
Date:
June 1980
Creator:
Persiani, P. J. & Kroc, T. K.
Object Type:
Report
System:
The UNT Digital Library
On Carrier Facilitated Transport Through Membranes
Facilitated transport is a process, whereby the diffusion of a solute across a membrane is chemically enhanced. In this report an analysis is given of a facilitated transport system involving a volatile species A which reacts with a nonvolatile carrier species B to form the nonvolatile product AB.
Date:
June 1980
Creator:
Kaper, H. G.; Leaf, G. K. & Matkowsky, Bernard J.
Object Type:
Report
System:
The UNT Digital Library
A Coupled Heat Conduction and Thermal Stress Formulation Using Explicit Integration
The formulation needed for the conductance of heat by means of explicit integration is presented. The implementation of these expressions into a transient structural code, which is also based on explicit temporal integration, is described. Comparisons of theoretical results with code predictions are given both for one-dimensional and two-dimensional problems. The coupled thermal and structural solution of a concrete crucible, when subjected to a sudden temperature increase, shows the history of cracking. The extent of cracking is compared with experimental data.
Date:
June 1982
Creator:
Marchertas, A. H. & Kulak, R. F.
Object Type:
Report
System:
The UNT Digital Library
Development of Enhanced Heat Transfer/Transport/Storage Slurries for Thermal-System Improvement
This report constitutes a formulation of a new concept for improving thermal-system performance by utilizing the combined mechanisms of enhanced heat transfer, transport, and thermal energy storage associated with a phase-change slurry as the working fluid. In addition, pertinent literature is surveyed and a quantitative scoping assessment of enhancement potential confirms concept merit. It has been determined that additional research and development is required in order to adequately understand the enhancement mechanisms to the degree that enhanced performance thermal systems using slurries can be designed. The concepts presented are identified as being new, rewarding research activities.
Date:
June 1982
Creator:
Kasza, Kenneth Edmund & Chen, M. M.
Object Type:
Report
System:
The UNT Digital Library
Nonlinear Ergodic Theorems for Abel Means
This report is concerned with ergodic theorems for Abel means of nonlinear contraction mappings and nonlinear contraction semigroups in a Hilbert space.
Date:
June 1979
Creator:
Kaper, H. G. & Leaf, G. K.
Object Type:
Report
System:
The UNT Digital Library