UNT Libraries Government Documents Department - 19 Matching Results

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Analytical and experimental heat transfer and flow-field prediction on a rectangular reentry module

Description: A General Purpose Heat Source (GPHS) has been designed for the purpose of supplying power to a radioisotope thermal generator intended for interplanetary missions. The baseline configuration, nominally 2 in. x 4 in. x 4 in. with sharp edges and corners, is required to survive accidental earth reentry as well as terminal impact velocities. Several problems have been identified relative to survival criteria during reentry. This paper is concerned with the flow field and reentry heating for a broa… more
Date: February 5, 1980
Creator: Laganelli, A.L.
Item Type: Refine your search to only Report
open access

Application of digital image analysis techniques to the Geyser's data and topography

Description: This paper describes the results of digital image analysis and techniques applied to acoustic sounder data and topographic relief in the Geyser's region. The two dimensional fast Fourier transform (2DFFT) represents the spacial variability of a photographic image. The spacial variability of topography in complex terrain can be represented in this way and insight into degree of complexity and dominating spacial wavelengths can be gained. This was performed for a 16 km square digitized topographi… more
Date: May 5, 1980
Creator: Porch, W.M.
Item Type: Refine your search to only Article
open access

Application of microfabrication technology to thermionic energy conversion. Progress report 4, 1 May 1980 to 31 July 1980

Description: Two applications of microfabrication technology to thermionic converters have been investigated theoretically. The first is a novel method of maintaining micron or submicron spacings over large areas (>1 cm/sup 2/), using metals of different expansion coefficients to eliminate the shear stresses on the insulating pillars separating the electrodes. The second uses low-voltage field-emission sources to create ions in a large (approx. 1 mm) interelectrode gap for space charge neutralization. The t… more
Date: September 5, 1980
Creator: Brodie, I.
Item Type: Refine your search to only Report
open access

Chief financial officer's task force on rationing feasibility, cost and schedule. Final report

Description: The purpose of this memorandum is to report our realistic assessment of the feasibility, cost, and time frame for bringing a rationing program to 90-day readiness. The basic aspects of the nature of the rationing plan are discussed. The plan has been changed in several respects in response to comments from the Congress, the general public and the ECC, since the previous version was rejected by the Congress in May 1979. Three changes in particular impact the preimplementation process: The range … more
Date: March 5, 1980
Item Type: Refine your search to only Report
open access

Cool pool development. Quarterly technical report No. 2, June-December 1979

Description: The Cool Pool is a variation of the evaporating roof pond idea. The pool is isolated from the living space and the cooled pond water thermosiphons into the water columns located within the building. A computer model of the Cool Pool and the various heat and mass transfer mechanisms involved in the system are discussed. Theory will be compared to experimental data collected from a Cool Pool test building.
Date: January 5, 1980
Creator: Crowther, K.
Item Type: Refine your search to only Report
open access

Effects of Annular Air Gaps Surrounding an Emplaced Nuclear Waste Canister in Deep Geologic Storage

Description: Annular air spaces surrounding an emplaced nuclear waste canister in deep geologic storage will have significant effects on the long-term performance of the waste form. Addressed specifically in this analysis is the influence of a gap on the thermal response of the waste package. Three dimensional numerical modeling predicts temperature effects for a series of parameter variations, including the influence of gap size, surface emissivities, initial thermal power generation of the canister, and t… more
Date: June 5, 1980
Creator: Lowry, William E.; Davis, Bill W. & Cheung, Henry
Item Type: Refine your search to only Report
open access

Energy savings through the use of an improved aluminum reduction-cell cathode. Technical progress report, April 1, 1980-June 30, 1980

Description: Goal is to develop a Hall cell cathode, which will reduce the specific energy consumption of existing commercial cells by 20 to 25%. Basis of the improvement is the utilization of titanium diboride (TiB/sub 2/), a material that is wetted by molten aluminum, as the cell cathode. This provides a stable cathode surface, thereby allowing the cell to be operated at a smaller anode-cathode distance (ACD). Energy savings arise as a result of reduced resistive losses through the cryolite electrolyte. T… more
Date: August 5, 1980
Creator: Dorward, R.C. & Payne, J.R.
Item Type: Refine your search to only Report
open access

Holographic and acoustic emission evaluation of pressure vessels

Description: Optical holographic interfereometry and acoustic emission monitoring were simultaneously used to evaluate two small, high pressure vessels during pressurization. The techniques provide pressure vessel designers with both quantitative information such as displacement/strain measurements and qualitative information such as flaw detection. The data from the holographic interferograms were analyzed for strain profiles. The acoustic emission signals were monitored for crack growth and vessel quality. more
Date: March 5, 1980
Creator: Boyd, D.M.
Item Type: Refine your search to only Article
open access

Low-temperature hydrothermal resource evaluation

Description: The objectives of testing low-temperature hydrothermal wells are to characterize well response to production (injection), determine resource characteristics and project reservoir longevity. Testing procedures and analysis techniques differ in some respects from proven procedures in the oil and gas and ground water fields. Some basic definitions and standard techniques necessary for the evaluation of a fluid resource in an intergranular permeable reservoir are presented. Problems particular to a… more
Date: May 5, 1980
Creator: Goldman, D.
Item Type: Refine your search to only Article
open access

Monitor for detecting nuclear waste leakage in a subsurface repository

Description: The remote fiber fluorimetric portion of the program is slightly ahead of schedule and proceeding well technically. Proof of principle has been demonstrated over a 0.2 km path length using an organic tracer material. Performance and design calculations have been made for the fiber optic components of the system. Optimized fibers have been ordered and special jigs and optical couplings are presently being fabricated. Progress on the high-sensitivity analyzer using coprecipitation techniques has … more
Date: November 5, 1980
Creator: Klainer, S.; Hirschfeld, T.; Bowman, H.; Milanovich, F.; Perry, D. & Johnson, D.
Item Type: Refine your search to only Report
open access

Recent developments in nuclear reaction theories and calculations

Description: A brief review is given of some recent developments in the fields of optical model potentials; level densities; and statistical model, precompound, and direct reaction codes and calculations. Significant developments have occurred in all of these fields since the 1977 Conference on Neutron Cross Sections, which will greatly enhance the ability to calculate high-energy neutron-induced reaction cross sections in the next few years. 11 figures, 3 tables.
Date: May 5, 1980
Creator: Gardner, D. G.
Item Type: Refine your search to only Article
open access

Reliability of large superconducting magnets through design

Description: As superconducting magnet systems grow larger and become the central component of major systems involving fusion, magnetohydrodynamics, and high-energy physics, their reliability must be commensurate with the enormous capital investment in the projects. Although the magnet may represent only 15% of the cost of a large system such as the Mirror Fusion Test Facility, its failure would be catastrophic to the entire investment. Effective quality control during construction is one method of ensuring… more
Date: September 5, 1980
Creator: Henning, Carl D.
Item Type: Refine your search to only Article
open access

Shiva automatic pinhole alignment

Description: This paper describes a computer controlled closed loop alignment subsystem for Shiva, which represents the first use of video sensors for large laser alignment at LLNL. The techniques used on this now operational subsystem are serving as the basis for all closed loop alignment on Nova, the 200 terawatt successor to Shiva.
Date: September 5, 1980
Creator: Suski, G.J.
Item Type: Refine your search to only Article
open access

Study of mechanisms of hydrogen diffusion in separation devices. Third annual report, 1979-1980

Description: The main results are in the following three areas: (1) examination of a diffusion model for PdH system, (2) connection between the diffusion model and other physical models, (3) related problems. Advances made during the third year of this project, particularly in understanding the physical model for hydrogen diffusion, make it possible to begin to meet some of the long-range objectives described in the initial proposals of 1977-1978.
Date: April 5, 1980
Creator: Lee, M.H.
Item Type: Refine your search to only Report
open access

Study of the effects of accidentally released carbon/graphite fibers on electric power equipment. Program final report, June 5, 1978-June 5, 1980

Description: The program to study the effect of accidentally released carbon fibers on electrical power equipment consisted of determining the vulnerability of system outage rates to carbon fiber contamination, and performing tests to quantitize the contamination required to cause flashover of external insulation. Part One of this final report describes an assessment of the vulnerability of power systems to accidentally released fibers from a composite burn. The assessment describes the effect of carbon fib… more
Date: June 5, 1980
Creator: Mauser, S. F.; Bankoske, J. W.; Cooper, J. H.; Davies, D. G.; Eichler, C. H.; Hileman, A. R. et al.
Item Type: Refine your search to only Report
open access

Three-dimensional thermal analysis of a baseline spent fuel repository

Description: A three-dimensional thermal analysis has been performed using finite difference techniques to determine the near-field response of a baseline spent fuel repository in a deep geologic salt medium. A baseline design incorporates previous thermal modeling experience and OWI recommendations for areal thermal loading in specifying the waste form properties, package details, and emplacement configuration. The base case in this thermal analysis considers one 10-year old PWR spent fuel assembly emplace… more
Date: June 5, 1980
Creator: Altenbach, T.J. & Lowry, W.E.
Item Type: Refine your search to only Article
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