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Dynamic Characteristics of Heat Exchanger Tubes Vibrating in a Tube Support Plate Inactive Mode

Description: Tubes in shell-and-tube heat exchangers, including nuclear plant steam generators, derive their support from longitudinally positioned tube support plates (TSPs). Typically there is a clearance between the tube and TSP hole. Depending on design and fabrication tolerances, the tube may or may not contract all of the TSPs. Noncontact results in an inactive TSP which can lead to detrimental flow induced tube vibrations under certain conditions dependent on the resulting tube-TSP interaction dynamics and the fluid excitation forces. The purpose of this study is to investigate the tube-TSP interaction dynamics. Results of an experimental study of damping and natural frequency as functions of tube-TSP diametral clearance and TSP thickness are reported. Calculated values of damping ratio and frequency of a tube vibrating within an inactive TSP are also presented together with a comparison of calculated and experimental quantities.
Date: August 1984
Creator: Jendrzejczyk, J. A.

Transuranic Decontamination of Nitric Acid Solutions by the Truex Solvent Extraction Process: Preliminary Development Studies

Description: This report summarizes the work that has been performed to date at Argonne National Laboratory on the development of the TRUEX process, a solvent extraction process employing a bifunctional organophosphorous reagent in a PUREX process solverc (tributyl phosphate-normal paraffinic hydrocarbons). The purpose of this extraction process is to separate and concentrate transuranic (TRU) elements from nuclear waste.
Date: July 1984
Creator: Vandegrift, G. F.

Burner Stabilized Flames in Fluids

Description: In this report it is shown that a burner placed in a combustible fluid can have a stabilizing effect on a plane flame. A mathematical model is derived in which the flame is modeled as a surface of discontinuity in the flow field. Jump conditions for the fluid variables, as well as an expression for the flame speed, are obtained from an asymptotic analysis of the detailed structure of the flame. The model is applied to investigate the linear stability of a plane flame. Stable behavior is shown to exist for certain regimes of the parameters: Lewis number, burner strength, heat release and inflow velocity.
Date: July 1984
Creator: Kaper, H. G.; Leaf, Gary K.; Matalon, Moshe & Matkowsky, Bernard J.

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.

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.

Use of Monitors in FORTRAN: a Tutorial on the Barrier, Self-Scheduling DO-Loop, and Askfor 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: June 1985
Creator: Lusk, Ewing L. & Overbeek, Ross A.

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.

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.

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 through a high-level radioactive waste repository. Using this model and experimental measurements, we have evaluated neptunium (actinide) deposition velocity and analyzed the complex phenomena of simultaneous deposition, erosion, and re-entrainment of bentonite when groundwater is flowing through a narrow crack in a basalt rock. The present modeling demonstrates that we can obtain the values of transport parameters, as added information without any additional cost, from the available measurements of laboratory analog experiments.
Date: July 1984
Creator: Chen, B. C. J.; Hull, J. R.; Seitz, M. G.; Sha, William T.; Sha, V. L. & Soo, S. L.

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 tool to analytically vary the mixture composition to optimize cycle performance.
Date: January 1984
Creator: Ash, J. E.

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 support against gravity is also provided by magnetic fields. Energy insertion or extraction is similar to that for a synchronous motor.
Date: February 1984
Creator: Hull, John R. & Iles, Malvern K.

Status of the Li-Al/FeS Battery Manufacturing Technology. Final Report. November 1983. An Evaluation for the US Army, Belvoir R and D Center

Description: Research and development work on rechargeable lithium/molten salt batteries, sponsored by the US Department of Energy, has been under way at Argonne National Laboratory and several industrial laboratories for the past decade. In 1978, a program for the US Army (Belvoir R and D Center) was initiated with ANL and Eagle-Picher Industries to ascertain the status and to aid the development of the manufacturing technology of the Li-Al/FeS battery as a power source for forklift trucks. A long-lived cell, achieving greater than 1000 discharge cycles, was developed in the Army program and was used as a basis for a forklift truck battery design. The projected performance of the Li-Al/FeS battery showed a 200% increase in stored energy when compared with a lead-acid battery of equal volume.
Date: August 1984
Creator: Chilenskas, A. A.; Shimotake, H.; Malecha, R.; Battles, J.; Miller, W.; Yao, N. P. et al.