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Avoiding Leakage Flow-Induced Vibration by a Tube-in-Tube Slip Joint

Description: Parameters and operating conditions (a stability map) were determined for which a specific slip-joint design did not cause self-excited lateral vibration of the two cantilevered, telescoping tubes forming the joint. The joint design featured a localized annular constriction. Flowrate, modal damping, tube engagement length, and eccentric positioning were among the parameters tested. Interestingly, all self-excited vibrations could be avoided by following a simple design rule: place constrictions… more
Date: October 1984
Creator: Mulcahy, T. M.
Item Type: Refine your search to only Report
open access

Second Thoughts on the Mathematical Software Effort : a Perspective

Description: The mathematical software effort bridges the gap between the discovery of numerical algorithms and the consumption of numerical software. The spectrum of activities is surprisingly wide, including tasks often associated with numerical analysis, program design and testing, programming practices, language standards, documentation standards, software organization, distribution methods, and even the specification of arithmetic engines. This paper highlights the most important accomplishments in the… more
Date: October 1984
Creator: Cody, William James
Item Type: Refine your search to only Report
open access

Proceedings of the Eighth DOE Solar Photochemistry Research Conference Held at Interlaken Conference Center, Lake Geneva, Wisconsin, June 11-14, 1984

Description: These annual meetings bring together contractors of the Division of Chemical Sciences in its basic research program on solar photochemical energy conversion to exchange information and to give interested government officials an opportunity to assess the current status of the program. This year's meeting was joined by 12 Canadian scientists with similar interests in solar photochemistry. This volume contains the program of the meeting, a list of attendees, the abstracts of 29 formal presentation… more
Date: November 1984
Creator: Argonne National Laboratory
Item Type: Refine your search to only Report
open access

Scientific Workstation Evaluation Project: Multidisciplinary Experience with a Scientific Workstation

Description: This document is a formal report on the scientific workstation evaluation project. The objective of this project has been to evaluate a scientific workstation. When new computing systems appeared that exhibited the capabilities necessary to do scientific computing work at relatively low equipment cost, both the staff of the Argonne scientific divisions and we (the Computing Services staff) wished to know more about the equipment and the vendor claims.
Date: December 1984
Creator: Raffenetti, Richard C.; Carruthers, Clifford M.; Birgersson, Goran; Blomquist, R. N.; Kennedy, James M.; Koelling, Dale D. et al.
Item Type: Refine your search to only Report
open access

Flow-Induced Vibration of the SSME Lox Posts : Additional Issues

Description: A mathematical model is presented for flow-induced vibration of the Space Shuttle Main Engine (SSME) liquid oxygen (LOX) posts. The definition of the critical flow velocity is addressed, and detuning of the vibrations of the LOX posts is discussed. Nonuniform flow distributions in the axial and transverse directions are examined briefly, followed by upstream turbulence. The dependence of response upon post location is addressed briefly. Scruton's number, a mass-damping parameter, is defined and… more
Date: December 1984
Creator: Chen, Shoei-Sheng
Item Type: Refine your search to only Report
open access

Advanced Fuel Cell Development Progress Report: April-June 1984

Description: Quarterly report discussing fuel cell research and development work at Argonne National Laboratory (ANL). These efforts have been directed toward seeking alternative cathode materials to NiO for molten carbonate fuel cells. Particular emphasis has been placed on studying the relationship between synthesis conditions and the resistivity of doped and undoped LiFeO2 and Li2 MnO3 and on achieving a better understanding of the crystalline defect structures of the thermodynamically stable phases.
Date: November 1984
Creator: Pierce, Robert Dean; Claar, T. D.; Dees, D. W.; Fousek, R. J.; Kaun, T. D.; Kucera, C. H. et al.
Item Type: Refine your search to only Report
open access

Radioactive Liquid Waste Treatment Facility

Description: The Radioactive Liquid Waste Treatment Facility (RLWTF) at Argonne National Laboratory-West (ANL-W) in Idaho provides improved treatment for low-level aqueous waste compared to conventional systems. A unique, patented evaporated system is used in the RLWTF. SHADE (shielded hot air drum evaporator, US Patent No. 4,305,780) is a low-cost disposable unit constructed from standard components and is self-shielded. The results of testing and recent operations indicate that evaporation rates of 2 to 6… more
Date: July 1984
Creator: Black, Roger L.
Item Type: Refine your search to only Report
open access

Mixing, Chemical Reaction and Flow Field Development in Ducted Rockets

Description: Calculations have been made of the three-dimensional mixing, chemical reaction, and flow field development in a typical ducted rocket configuration. The governing partial differential equations are numerically solved by an iterative finite-difference solution procedure. The physical models include the k approx. epsilon turbulence model, one-step reaction, and mixing controlled chemical reaction rate. Radiation is neglected. The mean flow structure, fuel dispersal patterns, and temperature field… more
Date: September 1984
Creator: Vanka, S. P.; Craig, R. R. & Stull, F. D.
Item Type: Refine your search to only Report
open access

Accuracy of the Finite Analytic Method for Scalar Transport Calculations

Description: The accuracy of the finite analytic method of discretizing fluid flow equations is assessed through calculations of multidimensional scalar transport. The transport of a scalar function in a uniform velocity flow field inclined with the finite-difference grid lines is calculated for a range of grid Peclet numbers and flow skewness. The finite analytic method is observed to be superior to the approach of constructing finite-difference analogs from locally one-dimensional resolution of the flow v… more
Date: September 1984
Creator: Vanka, S. P.
Item Type: Refine your search to only Report
open access

Spectral Theory of Sturm-Liouville Differential Operators: Proceedings of the 1984 Workshop. Held at Argonne National Laboratory May 15 - June 15, 1984

Description: This report contains the proceedings of the workshop which was held at Argonne during the period May 14 through June 15, 1984. The report contains 22 articles, authored or co-authored by the participants in the workshop. Topics covered at the workshop included the asymptotics of eigenvalues and eigenfunctions; qualitative and quantitative aspects of Sturm-Liouville eigenvalue problems with discrete and continuous spectra; polar, indefinite, and non-self-adjoint Sturm-Liouville eigenvalue proble… more
Date: December 1984
Creator: Kaper, H. G.; Zettl, Anton & Pieper, Gail W.
Item Type: Refine your search to only Report
open access

Flow-Induced Vibration of the SSME LOX Posts

Description: Cracking of liquid-oxygen (LOX) posts was observed in several evaluation tests. The design modification consists of attaching impingement shields to LOX posts in the upstream row. This has improved the vibration/fatigue problem of LOX posts. However, that modification results in an increased pressure drop that ultimately affects the lifetime of other components. This report presents a preliminary assessment of the LOX post vibration problem including a review of relevant parameters, flow induce… more
Date: September 1984
Creator: Chen, Shoei-Sheng & Jendrzejczyk, J. A.
Item Type: Refine your search to only Report
open access

Proceedings of the Workshop on Polarized Targets in Storage Rings. May 17-18, 1984 at Argonne National Laboratory

Description: Proceedings of a workshop of a unique group of physicists in the fields of high-energy, nuclear and atomic physics. The meeting was organized in a manner that stimulated discussion among the 58 participants and focused on developments in polarized target technology and the underlying atomic physics. An impressive array of future possibilities for polarized targets as well as current developments in polarized target technology were discussed at the workshop.
Date: August 1984
Creator: Holt, R. J.
Item Type: Refine your search to only Report
open access

Use of Monitors in FORTRAN: a Tutorial on the Barrier, Self-Scheduling DO-Loop, and Ask for Monitors

Description: A set of macro libraries has been developed that allows programmers to write portable FORTRAN code for multiprocessors. This document presents, in tutorial form, the macros used to implement three common synchronization patterns: self-scheduling DO-loops, barrier synchronization, and the askfor monitor.
Date: July 1984
Creator: Lusk, Ewing L. & Overbeek, Ross A.
Item Type: Refine your search to only Report
open access

Use of Monitors in Pascal on the Lemur: a Tutorial on the Barrier, Self-Scheduling FOR-Loop, and Askfor Monitors

Description: A set of macro libraries has been developed that allows programmers to write portable Pascal code for multiprocessors. This document presents, in tutorial form, the macros used to implement three common synchronization patterns: self-scheduling FOR-loops, barrier synchronization, and the askfor monitor.
Date: July 1984
Creator: Clausing, J. A.; Hagstrom, R. T.; Lusk, Ewing L. & Overbeek, Ross A.
Item Type: Refine your search to only Report
open access

The TRIO Experiment

Description: The TRIO experiment is a test of in-situ tritium recovery and heat transfer performance of a miniaturized solid breeder blanket assembly. The assembly (capsule) was monitored for temperature and neutron flux profiles during irradiation and a sweep gas flowed through the capsule to an analytical train wherein the amounts of tritium in its various chemical forms were determined. The capsule was designed to operate at different temperatures and sweep gas conditions. At the end of the experiment th… more
Date: September 1984
Creator: Clemmer, Robert G.
Item Type: Refine your search to only Report
open access

DISPL1: a Software Package for One and Two Spatially Dimensioned Kinetics-Diffusion Problems

Description: DISPL1 is a software package for solving some second order nonlinear systems of partial differential equations including parabolic, elliptic, hyperbolic, and some mixed types such as parabolic-elliptic equations. Fairly general nonlinear boundary conditions are allowed as well as interface conditions for problems in an inhomogeneous media. The spatial domain is one or two dimensional with Cartesian, cylindrical, or spherical (in one dimension only) geometry. The numerical method is based on the… more
Date: September 1984
Creator: Leaf, Gary K. & Minkoff, Michael
Item Type: Refine your search to only Report
open access

Stability of Tubes Conveying Fluid

Description: Tests and analysis are made for tubes conveying fluid for two types of support conditions. The objectives are to study the characteristics of different types of instability, the transition of one instability mechanism to another, and the control of instability.
Date: April 1984
Creator: Chen, Shoei-Sheng & Jendrzejczyk, J. A.
Item Type: Refine your search to only Report
open access

Mathematical Modeling and Evaluation of Radionuclide Transport Parameters from the ANL Laboratory Analog Program

Description: Computer model simulation is required to evaluate the performance of proposed or future high-level radioactive waste geological repositories. However, the accuracy of a model in predicting the real situation depends on how well the values of the transport properties are prescribed as input parameters. Knowledge of transport parameters is therefore essential. We have modeled ANL's Experiment Analog Program which was designed to simulate long-term radwaste migration process by groundwater flowing… more
Date: July 1984
Creator: Chen, B. C-J.; Hull, J. R.; Seitz, M. G.; Sha, William T.; Shah, V. L. & Soo, S. L.
Item Type: Refine your search to only Report
open access

Thermodynamic Analysis of Multicomponent Working Fluids for Rankine Bottoming Cycle Applications

Description: The basic equations underlying a computer code are developed to describe the thermodynamic behavior of multi-component working fluids in Rankine cycles. The code is to be employed in the performance analysis of Rankine bottoming cycle systems. The performance of such systems depends strongly on the working fluid characteristics. The introduction of multi-component mixtures makes available a broad spectrum of fluid properties achievable by varying the mixture composition. The code provides a too… more
Date: January 1984
Creator: Ash, J. E.
Item Type: Refine your search to only Report
open access

Magnetically Confined Kinetic-Energy Storage Ring: a New Fundamental Energy-Storage Concept

Description: The magnetically confined kinetic-energy storage ring (MCKESR) is a new, fundamental type of energy-storage device. Energy is stored as kinetic energy in mass circulated at high velocity around a circular loop. The constraining force necessary to keep the circulating ring from flying apart is provided by radial, inwardly directed forced exerted along the perimeter of the loop by magnetic fields. The magnets and ring are contained in a tunnel, which may be buried in the ground. Levitational supp… more
Date: February 1984
Creator: Hull, John R. & Iles, Malvern K.
Item Type: Refine your search to only Report
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