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Develop apparatus and process for second-stage drying. Final technical report, September 26, 1994--September 27, 1996

Description: The final technical report for this project contains detailed technical results for the various tasks performed in the projects. The project scope was to develop an apparatus and process for second-stage drying of softwoods, such as southern yellow pine, for construction lumber. The focus of the project was on increasing the efficiency of high-temperature drying. The project tasks were: (1) computer simulation refinement and extension of the theory to commercial-sized kilns, (2) detailed heat exchanger equipment design, (3) pilot-scale design and fabrication, (4) experimental evaluation of the pilot-scale system, and (5) preliminary design of a prototype system. The effort on this project has been continuous and productive in gaining a better understanding of the processes involved in the drying of softwoods. 19 refs., 41 figs., 13 tabs.
Date: January 3, 1997
Creator: Taylor, F.
Partner: UNT Libraries Government Documents Department

Mississippi DOE EPSCoR planning grant. Final report

Description: The Mississippi DOE EPSCoR planning grant committee identified three focus areas for a proposal submitted on January 25, 1995, to the US DOE: Human Resource Development, Environmental Synergisms from Fuel Mixtures of Tire Particles and Low Rank Coals, and Energy Efficient Heat Transfer Equipment and Materials. In the human resources are, efforts were undertaken to identify and develop linkages with educational institutions, national laboratories, and industries and to identify strategies for attracting and involving students in areas leading to technical careers. The fuel mixtures project was directed toward developing ways to combine scrap tire particles and lignite coal into a blended fuel that could be used in electric power generation. In the energy efficient heat transfer area, analytical and experimental investigations were planned to increase the efficiency of heat exchangers and insulating materials.
Date: September 1, 1996
Creator: Steele, W.G.
Partner: UNT Libraries Government Documents Department

Nuclear structure studies of exotic nuclei. Progress report, September 1, 1996--August 31, 1997

Description: This report concerns the current status of the project `Nuclear Structure Studies of Exotic Nuclei`. Discussed in this report are experiments performed during the current year, status of data analysis, plans and proposals for future experiments, conferences attended, equipment purchases related to the project, and use of graduate and undergraduate students.
Date: May 1, 1997
Creator: Winger, J.A.
Partner: UNT Libraries Government Documents Department

Computational physical oceanography -- A comprehensive approach based on generalized CFD/grid techniques for planetary scale simulations of oceanic flows. Final report, September 1, 1995--August 31, 1996

Description: The original intention for this work was to impart the technology that was developed in the field of computational aeronautics to the field of computational physical oceanography. This technology transfer involved grid generation techniques and solution procedures to solve the governing equations over the grids thus generated. Specifically, boundary fitting non-orthogonal grids would be generated over a sphere taking into account the topography of the ocean floor and the topography of the continents. The solution methodology to be employed involved the application of an upwind, finite volume discretization procedure that uses higher order numerical fluxes at the cell faces to discretize the governing equations and an implicit Newton relaxation technique to solve the discretized equations. This report summarizes the efforts put forth during the past three years to achieve these goals and indicates the future direction of this work as it is still an ongoing effort.
Date: February 20, 1997
Creator: Beddhu, M.; Jiang, M.Y.; Whitfield, D.L.; Taylor, L.K. & Arabshahi, A.
Partner: UNT Libraries Government Documents Department

Non-coincident multi-wavelength emission absorption spectroscopy

Description: An analysis is presented of the effect of noncoincident sampling on the measurement of atomic number density and temperature by multiwavelength emission absorption. The assumption is made that the two signals, emission and transmitted lamp, are time resolved but not coincident. The analysis demonstrates the validity of averages of such measurements despite fluctuations in temperature and optical depth. At potassium-seeded MHD conditions, the fluctuations introduce additional uncertainty into measurements of potassium atom number density and temperature but do not significantly bias the average results. Experimental measurements in the CFFF aerodynamic duct with coincident and noncoincident sampling support the analysis.
Date: February 1, 1995
Creator: Baumann, L. E.
Partner: UNT Libraries Government Documents Department

Diagnostic development and support of MHD test facilities

Description: The Diagnostic Instrumentation and Analysis Laboratory (DIAL) at Mississippi State University (MSU) is developing diagnostic instruments for Magnetohydrodynamics (MHD) power train data acquisition and for support of MHD component development test facilities. Microprocessor-controlled optical instruments, initially developed for Heat Recovery/Seed Recovery support, are being refined, and new systems to measure temperatures and gas-seed-slag stream characteristics are being developed. To further data acquisition and analysis capabilities, the diagnostic systems are being interfaced with DIAL's computers. Technical support for the diagnostic needs of the national MHD research effort is being provided. DIAL personnel will also cooperate with government agencies and private industries to improve the transformation of research and development results into processes, products and services applicable to their needs. 9 figs., 1 tab.
Date: January 1, 1990
Partner: UNT Libraries Government Documents Department

Potassium emission absorption system. Topical report 12

Description: The Potassium Emission Absorption System is one of the advanced optical diagnostics developed at Mississippi State University to provide support for the demonstration of prototype-scale coal-fired combustion magnetohydrodynamic (MHD) electrical power generation. Intended for application in the upstream of an MHD flow, the system directly measures gas temperature and neutral potassium atom number density through spectroscopic emission absorption techniques. From these measurements the electron density can be inferred from a statistical equilibrium calculation and the electron conductivity in the MHD channel found by use of an electron mobility model. The instrument has been utilized for field test measurements on MHD facilities for almost a decade and has been proven to provide useful measurements as designed for MHD nozzle, channel, and diffuser test sections. The theory of the measurements, a system description, its capabilities, and field test measurement results are reported here. During the development and application of the instrument several technical issues arose which when addressed advanced the state of the art in emission absorption measurement. Studies of these issues are also reported here and include: two-wavelength measurements for particle-laden flows, potassium D-line far wing absorption coefficient, bias in emission absorption measurements arising from dirty windows and misalignments, non-coincident multiwavelength emission absorption sampling errors, and lineshape fitting for boundary layer flow profile information. Although developed for NLHD application, the instrument could be applied to any high temperature flow with a resonance line in the 300 to 800 nm range, for instance other types of flames, rocket plumes or low temperature plasmas.
Date: April 1, 1995
Creator: Bauman, L.E.
Partner: UNT Libraries Government Documents Department

Particle size distribution instrument. Topical report 13

Description: The development of an instrument to measure the concentration of particles in gas is described in this report. An in situ instrument was designed and constructed which sizes individual particles and counts the number of occurrences for several size classes. Although this instrument was designed to detect the size distribution of slag and seed particles generated at an experimental coal-fired magnetohydrodynamic power facility, it can be used as a nonintrusive diagnostic tool for other hostile industrial processes involving the formation and growth of particulates. Two of the techniques developed are extensions of the widely used crossed beam velocimeter, providing simultaneous measurement of the size distribution and velocity of articles.
Date: April 1, 1995
Creator: Okhuysen, W. & Gassaway, J.D.
Partner: UNT Libraries Government Documents Department

Develop apparatus and process for second-stage drying. Quarterly progress report, September 27, 1995--December 26, 1995

Description: The effort this quarter has been directed primarily toward the testing of the experimental apparatus for the laboratory scale heat exchanger models. Some additional work has been done on the computer predictive model for dry kiln performance.
Date: January 5, 1996
Creator: Taylor, F.
Partner: UNT Libraries Government Documents Department

Application of modern diagnostic methods to environmental improvement. Annual progress report, October 1994--September 1995

Description: The Diagnostic Instrumentation and Analysis Laboratory (DIAL), an interdisciplinary research department in the College of Engineering at Mississippi State University (MSU), is under contract with the US Department of Energy (DOE) to develop and apply advanced diagnostic instrumentation and analysis techniques to aid in solving DOE`s nuclear waste problem. The program is a comprehensive effort which includes five focus areas: advanced diagnostic systems; development/application; torch operation and test facilities; process development; on-site field measurement and analysis; technology transfer/commercialization. As part of this program, diagnostic methods will be developed and evaluated for characterization, monitoring and process control. Also, the measured parameters, will be employed to improve, optimize and control the operation of the plasma torch and the overall plasma treatment process. Moreover, on-site field measurements at various DOE facilities are carried out to aid in the rapid demonstration and implementation of modern fieldable diagnostic methods. Such efforts also provide a basis for technology transfer.
Date: December 1, 1995
Creator: Shepard, W.S.
Partner: UNT Libraries Government Documents Department

Diagnostic development and support of MHD test facilities

Description: The Diagnostic Instrumentation and Analysis Laboratory (DIAL) at Mississippi State University (MSU) is developing diagnostic instruments for MHD power train data acquisition and for support of MHD component development test facilities. Microprocessor-controlled optical instruments, initially developed for Heat Recovery/Seed Recovery support, are being refined, and new systems to measure temperatures and gas-seed-slag stream characteristics are being developed. To further data acquisition and analysis capabilities, the diagnostic systems are being interfaced with DIAL's computers. Technical support for the diagnostic needs of the national MHD research effort is being provided. DIAL personnel will also cooperate with government agencies and private industries to improve the transformation of research and development results into processes, products and services applicable to their needs. 25 figs., 6 tabs.
Date: January 1, 1990
Partner: UNT Libraries Government Documents Department

Development and application of diagnostic instrumentation for measurement of electron density and conductivity

Description: The purpose of this contract was to assemble and demonstrate in the laboratory a Faraday rotation system for measurement of electron density and conductivity, with the intent to produce a system suitable for diagnostic support of the development of pulsed, space-based magnetohydrodynamic (MHD) power systems. Two system configurations were tested: (1) a rotating polarizer and (2) a beam splitting polarizer. Due to the short path length plasma produced in the laboratory flame, the long wavelength 496 {mu}m methyl fluoride laser line was used and only the more sensitive rotating polarizer configuration was used for the demonstration experiments. Electron number densities from 2 {times} 10{sup 19} to 9 {times} 10{sup 19} were measured with good agreement to statistical equilibrium (Saha) calculations using emission absorption-measured flame temperatures and neutral seed atom number seed atom nuclear densities. The electron collision frequencies were measured by transmission measurements. Combining these two measurements gave measured electron conductivities of between 4 and 12 mohs/m. These results compared reasonably well with those found with an electron collision frequency model combined with chemical equilibrium calculations and the emission absorption measurements. Ellipticity measurements of electron collision frequency were not possible due to the short path length of the laboratory plasma. 46 refs., 25 figs., 9 tabs.
Date: May 1, 1990
Creator: Bauman, L.E.
Partner: UNT Libraries Government Documents Department

Experimental study of heavy flavor physics and SSC research and development at the University of Mississippi

Description: The High Energy Physics Group has been principally involved with Fermilab experiments on photoproduction and hadroproduction of charm. Nuclear reactions with a mixed 250-GeV hadronic beam and 500-GeV [pi]-N interactions were used. Considerable attention is devoted to the UNIX/RISC computing farm. The Group also has an SSC R D program dealing with the adaptation and use of the HETC-based detector simulation code CALOR89, the development of liquid scintillator technology for use in SSC detector calorimeters, the hanging file calorimeter project, and the calorimetry program for GEM.
Date: January 1, 1992
Creator: Reidy, J.J.; Cremaldi, L.M. & Summers, D.J.
Partner: UNT Libraries Government Documents Department

Development of laser optogalvanic spectroscopy as a probe of alkali atoms in an MHD environment

Description: Application of Laser Optogalvanic Spectroscopy (LOGS) to MHD combustion systems requires selection of an appropriate alkali atom electronic transition to monitor. These studies suggest that in MHD combustion systems, it is desirable to use cesium, which occurs as an impurity in potassium compounds, as a surrogate for potassium rather than to directly monitor potassium in order to obtain reliable determinations of seed concentration. Studies were also performed to investigate the effect of electrode corrosion on the normalized LOGS signal intensity at a fixed wavelength (578.238 nm). During six-hour experiments in a near-stoichiometric flame, the normalized LOGS signal intensity decreased by 40-50% for a -960 V rod electrode and by 10-20% for a -500 V rod electrode. These changes are attributed to buildup of an oxide coating on the electrode, reducing the collection efficiency of the electrode.
Date: February 1, 1995
Creator: Monts, D. L.; Qian, S.; Cook, R. L. & Shepard, W. S.
Partner: UNT Libraries Government Documents Department

Experimental study of heavy flavor physics and SSC research and development at the University of Mississippi. Progress report, November 1, 1991--October 31, 1992

Description: The High Energy Physics Group has been principally involved with Fermilab experiments on photoproduction and hadroproduction of charm. Nuclear reactions with a mixed 250-GeV hadronic beam and 500-GeV {pi}-N interactions were used. Considerable attention is devoted to the UNIX/RISC computing farm. The Group also has an SSC R&D program dealing with the adaptation and use of the HETC-based detector simulation code CALOR89, the development of liquid scintillator technology for use in SSC detector calorimeters, the hanging file calorimeter project, and the calorimetry program for GEM.
Date: December 31, 1992
Creator: Reidy, J. J.; Cremaldi, L. M. & Summers, D. J.
Partner: UNT Libraries Government Documents Department

Gammasphere software development. Progress report

Description: This report describes the activities of the nuclear physics group at Mississippi State University which were performed during 1993. Significant progress has been made in the focus areas: chairing the Gammasphere Software Working Group (SWG); assisting with the porting and enhancement of the ORNL UPAK histogramming software package; and developing standard formats for Gammasphere data products. In addition, they have established a new public ftp archive to distribute software and software development tools and information.
Date: January 1, 1994
Creator: Piercey, R. B.
Partner: UNT Libraries Government Documents Department

Diagnostic development and support of MHD test facilities. Final progress report, March 1980--March 1994

Description: The Diagnostic Instrumentation and Analysis Laboratory (DIAL) at Mississippi State University (MSU), under U.S. Department of Energy (DOE) Contract No. DE-AC02-80ET-15601, Diagnostic Development and Support of MHD Test Facilities, developed diagnostic instruments for magnetohydrodynamic (MHD) power train data acquisition and for support of MHD component development test facilities. Microprocessor-controlled optical instruments, initially developed for Heat Recovery/Seed Recovery (HRSR) support, were refined, and new systems to measure temperatures and gas-seed-slag stream characteristics were developed. To further data acquisition and analysis capabilities, the diagnostic systems were interfaced with DIAL`s computers. Technical support was provided for the diagnostic needs of the national MHD research effort. DIAL personnel also cooperated with government agencies and private industries to improve the transformation of research and development results into processes, products and services applicable to their needs. The initial contract, Testing and Evaluation of Heat Recovery/Seed Recovery, established a data base on heat transfer, slagging effects on heat transfer surfaces, metal durability, secondary combustor performance, secondary combustor design requirements, and other information pertinent to the design of HR/SR components at the Coal-Fired Flow Facility (CFFF). To accomplish these objectives, a combustion test stand was constructed that simulated MHD environments, and mathematical models were developed and evaluated for the heat transfer in hot-wall test sections. Two transitions occurred during the span of this contract. In May 1983, the objectives and title of the contract changed from Testing and Evaluation of Heat Recovery/Seed Recovery to Diagnostic Development and Support of MHD Test Facilities. In July 1988, the research laboratory`s name changed from the MHD Energy Center to the Diagnostic Instrumentation and Analysis Laboratory.
Date: February 1, 1995
Partner: UNT Libraries Government Documents Department

Laser Doppler Velocimeter particle velocity measurement system

Description: This report gives a detailed description of the operation of the Laser Doppler Velocimeter (LDV) system maintained by DIAL at MSU. LDV is used for the measurement of flow velocities and turbulence levels in various fluid flow settings. Ills report details the operation and maintenance of the LDV system and provides a first-time user with pertinent information regarding the system`s setup for a particular application. Particular attention has been given to the use of the Doppler signal analyzer (DSA) and the burst spectrum analyzer (BSA) signal processors and data analysis.
Date: October 1, 1993
Creator: Wilson, W. W.; Srikantaiah, D. V.; Philip, T. & George, A.
Partner: UNT Libraries Government Documents Department

Intrusive multi-probe system

Description: The Diagnostic Instrumentation and Analysis Laboratory (DIAL) in the College of Engineering at Mississippi State University is the result of the efforts of several faculty members in the Aerospace and Chemical Engineering Departments obtaining funding in 1976. At that time, an initial research project was begun which was funded by the US Department of Energy as part of the national magnetohydrodynamic (MHD) program. Initial research efforts concentrated in heat recovery and seed recovery (HRSR) from the MHD combustion process as well as some materials investigations. Over the years, efforts at DIAL were shifted from HRSR studies to the development of optical based, microprocessor controlled instrumentation for use in the harsh MHD environment.
Date: February 1, 1995
Creator: Green, R. A.; Hester, L. R. & Bouchillon, C. W.
Partner: UNT Libraries Government Documents Department

Application of modern diagnostic methods to environmental improvement. Annual progress report, January--October 1994

Description: The Diagnostic Instrumentation and Analysis Laboratory (DIAL), a research department in the College of Engineering at Mississippi State University (MSU), is under contract with the US Department of Energy (DOE) to develop and apply advanced diagnostic instrumentation and analysis techniques to real world processes; measurements are made in hot, highly corrosive atmospheres in which conventional measurement devices are ineffective. Task 1 of this agreement is concerned with the development and application of various diagnostic methods to characterize the plasma properties, the melt properties and the downstream emissions from a plasma torch facility designed to vitrify mixed waste. Correlation of the measured properties with the operating parameters of the torch will be sought to improve, optimize and control the overall operation of the plasma treatment process. As part of this program, diagnostic methods will be developed and evaluated for characterization, monitoring and control purposes of treatment processes in general. Task 2 of this agreement is concerned with the development of a system to monitor and control the combustion stoichiometry in real time in order to minimize environmental impact and maximize process efficiency. Staged fuel injection is also being studied to minimize NO{sub x} formation.
Date: December 1, 1994
Creator: Shepard, W. S.
Partner: UNT Libraries Government Documents Department

Experimental investigation of steep-front short duration (SFSD) surge effects on power systems components

Description: Results are reported from experiments in which steep-front, short- duration (SFSD) voltage impulses were imposed on various electrical distribution components. These pulses were generated by switching a section of charged, high voltage coaxial cable across the component under study. Components included underground distribution cable, terminators, insulators and arresters. SFSD voltage needed to flashover 15 kV polyethylene cable with a single pulse is approximately 625 kV peak. Strength of polyethylene cable decreases with increasing number of SFSD pulses, indicating cumulative degradation of the polymer. For 15 kV and 25 kV cable terminators, the SFSD CFO was over twice the rated standard lightning BIL for the same units. Similarly, porcelain suspension insulators required more than a doubling of voltage to decrease time to flashover from 1 microsecond to .1 microsecond. Arresters were found to respond rapidly to steep-front current pulses, but the arrester material itself was found to result in a higher discharge voltage for SFSD pulses. Arresters also showed a delay in turn-on of current following the arrival of a steep-front voltage surge.
Date: May 1, 1992
Creator: Miller, D.B. (Mississippi State Univ., MS (United States). Dept. of Electrical and Computer Engineering)
Partner: UNT Libraries Government Documents Department