Nondestructive Characterization Methods for Monolithic Solid Oxide Fuel Cells (open access)

Nondestructive Characterization Methods for Monolithic Solid Oxide Fuel Cells

Monolithic solid oxide fuel cells (MSOFCS) represent a potential breakthrough in fuel cell technology, provided that reliable fabrication methods can be developed. Fabrication difficulties arise in several steps of the processing: First is the fabrication of uniform thin (305 {mu}m) single-layer and trilayer green tapes (the trilayer tapes of anode/electrolyte/cathode and anode/interconnect/cathode must have similar coefficients of thermal expansion to sinter uniformly and to have the necessary electrochemical properties); Second is the development of fuel and oxidant channels in which residual stresses are likely to develop in the tapes; Third is the fabrication of a "complete" cell for which the bond quality between layers and the quality of the trilayers must be established; and Last, attachment of fuel and oxidant manifolds and verification of seal integrity. The purpose of this report is to assess nondestructive characterization methods that could be developed for application to laboratory, prototype, and full-scale MSOFCs.
Date: January 1993
Creator: Ellingson, W. A.
System: The UNT Digital Library
Parallel Programming with PCN. Revision 2 (open access)

Parallel Programming with PCN. Revision 2

PCN is a system for developing and executing parallel programs. It comprises a high-level programming language, tools for developing and debugging programs in this language, and interfaces to Fortran and C that allow the reuse of existing code in multilingual parallel programs. Programs developed using PCN are portable across many different workstations, networks, and parallel computers. This document provides all the information required to develop parallel programs with the PCN programming system. It includes both tutorial and reference material. It also presents the basic concepts that underlie PCN, particularly where these are likely to be unfamiliar to the reader, and provides pointers to other documentation on the PCN language, programming techniques, and tools. This version of this document describes PCN version 2.0, a major revision of the PCN programming system. It supersedes earlier versions of this report.
Date: January 1993
Creator: Foster, Ian & Tuecke, Steven
System: The UNT Digital Library
Test Plan for Reactions Between Spent Fuel and J-13 Well Water Under Unsaturated Conditions (open access)

Test Plan for Reactions Between Spent Fuel and J-13 Well Water Under Unsaturated Conditions

Two complentary test plans are presented, one to examine the reaction of spent fuel and J-13 well water under unsaturated conditions and the second to examine the reaction of unirradiated uranium dioxide pellets and J-13 well water under unsaturated conditions. The former test plan examines the importance of the water content, the oxygen content as affected by radiolysis, the fuel burnup, fuel surface area, and temperature. The latter test plant examines the effect of the non-presence of Teflon in the test vessel.
Date: January 1993
Creator: Finn, P. A.; Wronkiewicz, David J.; Hoh, J. C.; Emery, J. W.; Hafenrichter, L. D. & Bates, J. K.
System: The UNT Digital Library
COMMIX-PPC: A Three-Dimensional Transient Multicomponent Computer Program for Analyzing Performance of Power Plant Condensers, Volume 1: Equations and Numerics (open access)

COMMIX-PPC: A Three-Dimensional Transient Multicomponent Computer Program for Analyzing Performance of Power Plant Condensers, Volume 1: Equations and Numerics

Report on the COMMIX-PPC computer program, designed to evaluate the thermal performance of power plant condensers. This first volume "describes in detail the basic equations, formulation, solution procedures, and models for auxiliary phenomena" (p. iv).
Date: February 1993
Creator: Chien, T. H.; Domanus, H. M. & Sha, William T.
System: The UNT Digital Library
Simplified Linear Equation Solvers : Users Manual (open access)

Simplified Linear Equation Solvers : Users Manual

The solution of large sparse systems of linear equations is at the heart of many algorithms in scientific computing. The SLES package is a set of easy-to-use yet powerful and extensible routines for solving large sparse linear systems. The design of the package allows new techniques to be used in existing applications without any source code changes in the applications.
Date: February 1993
Creator: Gropp, William & Smith, Barry
System: The UNT Digital Library
BlockSolve v1. 1: Scalable Library Software for the Parallel Solution of Sparse Linear Systems (open access)

BlockSolve v1. 1: Scalable Library Software for the Parallel Solution of Sparse Linear Systems

BlockSolve is a software library for solving large, sparse systems of linear equations on massively parallel computers. The matrices must be symmetric, but may have an arbitrary sparsity structure. BlockSolve is a portable package that is compatible with several different message-passing pardigms. This report gives detailed instructions on the use of BlockSolve in applications programs.
Date: March 1993
Creator: Jones, Mark T. & Plassmann, Paul E.
System: The UNT Digital Library
Lead Exposures and Biological Responses in Military Weapons Systems: Aerosol Characteristics and Acute Lead Effects among US Army Artillerymen: Final Report (open access)

Lead Exposures and Biological Responses in Military Weapons Systems: Aerosol Characteristics and Acute Lead Effects among US Army Artillerymen: Final Report

This study was to determine the concentration and chemical nature of lead (Pb) aerosols produced during the firing of artillery and to determine the exposures and biological responses of crew members exposed to lead aerosols during such firing. The concentrations of lead-containing aerosols at crew positions depended on wind conditions, with higher concentrations when firing into a head wind. Aerosol concentrations were highest in the muzzle blast zone. Concentrations of lead in the blood of crew members rose during the first 12 days of exposure to elevated airborne lead concentrations and then leveled off. There was no rapid decrease in blood lead concentrations after completion of firing. Small decreases in hematocrit and small increases in free erythrocyte porphyrin were correlated with increasing exposure to airborne lead. These changes were reversed by seven weeks after firing. Changes in nerve conduction velocity had borderline statistical significance to airborne lead exposure. In measuring nerve conduction velocity, differences in skin temperature must be taken into account.
Date: March 1993
Creator: Bhattacharyya, M. H.
System: The UNT Digital Library
7-GeV Advanced Photon Source Beamline Initiative. Conceptual Design Report (open access)

7-GeV Advanced Photon Source Beamline Initiative. Conceptual Design Report

The DOE is building a new generation 6-7 GeV Synchrotron Radiation Source known as the Advanced Photon Source (APS) at Argonne National Laboratory. This facility, to be completed in FY 1996, can provide 70 x-ray sources of unprecedented brightness to meet the research needs of virtually all scientific disciplines and numerous technologies. The technological research capability of the APS in the areas of energy, communications and health will enable a new partnership between the DOE and US industry. Current funding for the APS will complete the current phase of construction so that scientists can begin their applications in FY 1996. Comprehensive utilization of the unique properties of APS beams will enable cutting-edge research not currently possible. It is now appropriate to plan to construct additional radiation sources and beamline standard components to meet the excess demands of the APS users. In this APS Beamline Initiative, 2.5-m-long insertion-device x-ray sources will be built on four straight sections of the APS storage ring, and an additional four bending-magnet sources will also be put in use. The front ends for these eight x-ray sources will be built to contain and safeguard access to these bright x-ray beams. In addition, funds will be provided …
Date: May 1993
Creator: Argonne National Laboratory
System: The UNT Digital Library
ANL Technical Support Program for DOE Environmental Restoration and Waste Management Annual Report for October 1991 - September 1992 (open access)

ANL Technical Support Program for DOE Environmental Restoration and Waste Management Annual Report for October 1991 - September 1992

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: May 1993
Creator: Bates, John K.
System: The UNT Digital Library
Argonne National Laboratory-East Site Environmental Report for Calendar Year 1992 (open access)

Argonne National Laboratory-East Site Environmental Report for Calendar Year 1992

This report discusses the results of the environmental protection program at Argonne National Laboratory-East (ANL) for 1992. To evaluate the effects of ANL operations .on the environment, samples of environmental media collected on the site, at the site boundary, and off the ANL site were analyzed and compared to applicable guidelines and standards. A variety of radionuclides was measured in air, surface water, groundwater, soil, grass, and bottom sediment samples.
Date: May 1993
Creator: Golchert, N. W. & Kolzow, R. G.
System: The UNT Digital Library
Surveillance of Site A and Plot M : Report for 1992 (open access)

Surveillance of Site A and Plot M : Report for 1992

The results of the environmental surveillance program conducted at Site A/Plot M in the Palos Forest Preserve area for CY 1992 are presented. The surveillance program is the ongoing remedial action that resulted from the 1976-1978 radiological characterization of the site. That study determined that very low levels of hydrogen-3 (as tritiated water) had migrated from the burial ground and were present in two nearby hand-pumped picnic wells. The current program consists of sample collection and analysis of air, surface and subsurface water, and bottom sediment.
Date: May 1993
Creator: Golchert, N. W.
System: The UNT Digital Library
Chemical Technology Division Annual Technical Report: 1992 (open access)

Chemical Technology Division Annual Technical Report: 1992

Annual report of the Argonne National Laboratory Chemical Technology Division (CMT) discussing the group's activities during 1992. These included electrochemical technology; fossil fuel research; hazardous waste research; nuclear waste programs; separation science and technology; integral fast reactor pyrochemical processes; actinide recovery; applied physical chemistry; basic chemistry research; analytical chemistry; applied research and development; and computer applications.
Date: June 1993
Creator: Argonne National Laboratory. Chemical Technology Division.
System: The UNT Digital Library
Experiment on Fluidelastic Instability of Loosely Supported Tube Arrays in Crossflow (open access)

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.
System: The UNT Digital Library
Motion-Dependent Fluid Forces Acting on Tube Arrays in Crossflow (open access)

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.
System: The UNT Digital Library
Preliminary Plan for Treating Mixed Waste (open access)

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.
System: The UNT Digital Library
Users manual for the Chameleon Parallel Programming Tools (open access)

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
System: The UNT Digital Library
Ion Replacement Program Annual Report: 1993 (open access)

Ion Replacement Program Annual Report: 1993

Annual report of the Ion Replacement Electrorefining Program at Aronne National Laboratory describing their research and activities. There are three key accomplishments highlighted for the year: (1) identification of a suitable sodium(beta){double_prime}-alumina/molten salt electrolyte system that functions reproducibly at 723 K, (2) actual separation of dysprosium and lanthanum in experiments, and (3) the identification of a metal alloy, Li{sub x}Sb, as an alternative ion replacement electrode.
Date: July 1993
Creator: Tomczuk, Z.; Willit, J. L. & Fischer, A. K.
System: The UNT Digital Library
Nuclear Technology Programs Semiannual Progress Report: April-September 1991 (open access)

Nuclear Technology Programs Semiannual Progress Report: April-September 1991

Progress report of the Argonne National Laboratory's Nuclear Technology Programs, including R&D in three areas: applied physical chemistry, separation science and technology, and nuclear waste management.
Date: July 1993
Creator: Battles, J. E.
System: The UNT Digital Library
User`s Guide for the Casting Process Simulator Software CaPS-2D, Version 1.0 (open access)

User`s Guide for the Casting Process Simulator Software CaPS-2D, Version 1.0

Most casting defects occur during initial pouring and therefore the design of the running system, which guides the metal from the ladle into the mold, is crucial. Traditionally, the running system and mold filling are designed by trial and error, which is tedious, time consuming, and expensive. The uncertainties that remain can be overcome by a computer simulation that demonstrates the actual process of mold filling and subsequent solidification. Computer simulation of various processes has become more and more common in recent years. The cost-effectiveness of making flawless castings has made the foundry worker more aware of the process of mold filling, identification of hot spots, etc. The macroscopic Casting Process Simulator (CaPS) software combines heat transfer and fluid flow aspects and can describe a variety of solidification aspects, including mold filling. CaPS is a two-dimensional time-dependent computer code involving a finite-volume formulation for the mass, momentum. and energy equations. CaPS has the following characteristics. CaPS uses the PATRAN geometric modeling package for constructing the geometry, generating a neutral file consisting of a list of named components, and post-processing of the simulation results; building the geometry independently of the mesh is a time-saving procedure. A structured mesh generator of structured …
Date: July 1993
Creator: Domanus, H. M.; Schmitt, R. C. & Ahuja, S.
System: The UNT Digital Library
Fortran M Language Definition (open access)

Fortran M Language Definition

This document defines the Fortran M extensions to Fortran 77. It updates an earlier definition, dated June 1992, in several minor respects.
Date: August 1993
Creator: Foster, Ian & Chandy, K. Mani
System: The UNT Digital Library
Physics Division Annual Review: April 1, 1992-March 31, 1993 (open access)

Physics Division Annual Review: April 1, 1992-March 31, 1993

Annual report of activities of the Argonne National Laboratory Physics Division, including heavy-ion research, operation and development of ATLAS, medium-energy nuclear physics research and weak interactions, theoretical nuclear physics, and atomic and molecular physics research.
Date: August 1993
Creator: Argonne National Laboratory. Physics Division.
System: The UNT Digital Library
Programming in Fortran M (open access)

Programming in Fortran M

Fortran M is a small set of extensions to Fortran that supports a modular approach to the construction of sequential and parallel programs. Fortran M programs use channels to plug together processes which may be written in Fortran M or Fortran 77. Processes communicate by sending and receiving messages on channels. Channels and processes can be created dynamically, but programs remain deterministic unless specialized nondeterministic constructs are used. Fortran M programs can execute on a range of sequential, parallel, and networked computers. This report incorporates both a tutorial introduction to Fortran M and a users guide for the Fortran M compiler developed at Argonne National Laboratory. The Fortran M compiler, supporting software, and documentation are made available free of charge by Argonne National Laboratory, but are protected by a copyright which places certain restrictions on how they may be redistributed. See the software for details. The latest version of both the compiler and this manual can be obtained by anonymous ftp from Argonne National Laboratory in the directory pub/fortran-m at info.mcs.anl.gov.
Date: August 1993
Creator: Foster, Ian; Olson, Robert & Tuecke, Steven
System: The UNT Digital Library
Practical Superconductor Development for Electrical Power Applications, Annual Report: 1993 (open access)

Practical Superconductor Development for Electrical Power Applications, Annual Report: 1993

Annual report for the superconductor program at Argonne National Laboratory discussing the group's activities and research. This report describes technical progress of research and development efforts aimed at producing superconducting components in the Y-Ba-Cu, (B1,Pb)-Sr-Ca-Cu, (Tl,Pb,BI)-(Ba,Sr)-Ca-Cu, and Hg-Ba-Ca-Cu-O oxide systems including: synthesis and heat treatment of high-Ta superconductors; formation of monolithic and composite wires, tapes, and coils; characterization of structures and superconducting and mechanical properties; fabrication and properties of films; and development of prototype components.
Date: October 1993
Creator: Argonne National Laboratory. Materials and Components Technology Division.
System: The UNT Digital Library
Programming in Fortran M Revision 1 (open access)

Programming in Fortran M Revision 1

Fortran M is a small set of extensions to Fortran that supports a modular approach to the construction of sequential and parallel programs. Fortran M programs use channels to plug together processes which may be written in Fortran M or Fortran 77. Processes communicate by sending and receiving messages on channels. Channels and processes can be created dynamically, but programs remain deterministic unless specialized nondeterministic constructs are used. Fortran M programs can execute on a range of sequential, parallel, and networked computers. This report incorporates both a tutorial introduction to Fortran M and a users guide for the Fortran M compiler developed at Argonne National Laboratory. The Fortran M compiler, supporting software, and documentation are made available free of charge by Argonne National Laboratory, but are protected by a copyright which places certain restrictions on how they may be redistributed. See the software for details. The latest version of both the compiler and this manual can be obtained by anonymous ftp from Argonne National Laboratory in the directory pub/fortran-m at info.mcs.anl.gov.
Date: October 1993
Creator: Foster, Ian; Olson, Robert & Tuecke, Steven
System: The UNT Digital Library