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Actinides at the Crossroads: ICP-MS or Alpha Spectrometry?
The report contains viewgraphs only that summarize the following: Why turn to mass spectrometry for radiochemical measurements; What might be some advantages of using ICP mass spectrometry; Sensitivity of ETV-ICP-MS relative to decay counting (versus half-life); ICP-MS instrument detection limits for dissolved actinide isotopes; Effect of dissolved solids on USN-ICP-MS analysis; Polyatomic ion interferences in ICP-MS actinide measurements; Effect of operating conditions on uranium and protonated uranium signal; ICP mass spectrometry performance in actinide determinations; Determination of actinide elements in soil; Leachable Th-230 and Pu-239 in soil as determined by ICP-MS and alpha spectrometry; Leachable U-234 and U-238 in soil by ICP-MS and alpha spectrometry; Determination of uranium isotopic composition on smears; Activity ratios (U-234/U-238) as determined by mass spectrometry and alpha spectrometry; Uranium isotopic abundances as determined by TIMS and ICP-MS; and Comparison of uranium atom percentages determined by TIMS and ICP-MS. It is concluded that isotope dilution and radiochemical preparative techniques work well in radioanalytical applications of ICP-MS; radioanalytical ICP-MS data are equivalent to data from standard methods (TIMS, alpha spectrometry); and applications in radiation protection and earth sciences are certain to expand further.
Date:
December 31, 1995
Creator:
Crain, J. S.; Yaeger, J. S.; Smith, F. P.; Alvarado, J. A.; Smith, L. L.; Kiely, J. T. et al.
Object Type:
Article
System:
The UNT Digital Library
Additive synthesis with DIASS-M4C on Argonne National Laboratory`s IBM POWERparallel System (SP)
DIASS-M4C, a digital additive instrument was implemented on the Argonne National Laboratory`s IBM POWER parallel System (SP). This paper discusses the need for a massively parallel supercomputer and shows how the code was parallelized. The resulting sounds and the degree of control the user can have justify the effort and the use of such a large computer.
Date:
December 31, 1995
Creator:
Kaper, H.; Ralley, D.; Restrepo, J. & Tiepei, S.
Object Type:
Article
System:
The UNT Digital Library
Advanced 3D inverse method for designing turbomachine blades
To meet the goal of 60% plant-cycle efficiency or better set in the ATS Program for baseload utility scale power generation, several critical technologies need to be developed. One such need is the improvement of component efficiencies. This work addresses the issue of improving the performance of turbo-machine components in gas turbines through the development of an advanced three-dimensional and viscous blade design system. This technology is needed to replace some elements in current design systems that are based on outdated technology.
Date:
December 31, 1995
Creator:
Dang, T.
Object Type:
Article
System:
The UNT Digital Library
Advanced characterization of forms of chlorine, organic sulfur and trace elements in available coals from operating Illinois mines. Quarterly report, 1 December 1994--28 February 1995
The goals of the study are (1) to use X-ray absorption near-edge spectroscopy (XANES) to determine forms of chlorine (inorganic, ionic, and organic) and forms of organic sulfur (organic sulfide and thiophenic sulfur) in as-shipped coals from Illinois mines, (2) to obtain basic data on chlorine removal via froth flotation at fine ({minus}200 mesh) and ultrafine ({minus}400 mesh) particle sizes, and (3) to evaluate XANES for direct assessment of the organic/inorganic affinities of trace elements. This is a cooperative effort among the Illinois State Geological Survey, the University of Kentucky, and Western Kentucky University. In this quarter, chlorine leachability during fine wet grinding of 21 coal samples was examined. The results show a general improvement in chlorine removal by grinding coals to {minus}200 mesh, but do not show further improvement by additional grinding to {minus}400 mesh. The chlorine and sulfur spectra of five coals , each from a distinct geographic location in Illinois, were examined. The chlorine XANES spectra for the five coals are similar and chloride anion was determined to be the predominant form of chlorine. The sulfur XANES data for the same coals show that a majority (61% to 82%) of organic sulfur in the coals is contributed …
Date:
December 31, 1995
Creator:
Chou, M.I.M.; Demir, I.; Ruch, R.R. & Lytle, S.
Object Type:
Report
System:
The UNT Digital Library
Advanced characterization of forms of chlorine, organic sulfur and trace elements in available coals from operating Illinois mines. Quarterly report, 1 March 1995--31 May 1995
The goals of the study are (1) to use X-ray absorption near-edge spectroscopy (XANES) to determine forms of chlorine (inorganic, ionic, and organic) and forms of organic sulfur (organic sulfide and thiophenic sulfur) in as-shipped coals from Illinois mines, (2) to obtain basic data on chlorine removal via froth flotation at fine ({minus}200 mesh) and ultrafine ({minus}400 mesh) particle sizes, and (3) to evaluate XANES for direct assessment of the organic/inorganic affinities of trace elements. In the last quarter, chlorine leachability during fine wet grinding of 21 coal samples was examined. In this quarter, the effect of froth flotation/release analysis (FF/RA) on the Cl contents of coals ground to {minus}200 and {minus}400 mesh sizes is completed. The results indicate that a combination of wet grinding and FF/RA reduced Cl contents in most samples from regions 1,2, and 3 by 29--81% and in one sample from region 4S by 60%. The chlorine and sulfur spectra of 21 coals, from five distinct geographic locations in Illinois, were examined. The chlorine XANES spectra for the coals are similar and chloride anion was determined to be the predominant form of chlorine. The sulfur XANES data for these coals show that a majority (61% to …
Date:
December 31, 1995
Creator:
Chou, M. I. M.; Demir, I.; Ruch, R. R.; Lytle, J. M.; Bhagway, S.; Li, Y. C. et al.
Object Type:
Report
System:
The UNT Digital Library
Advanced coal liquefaction. Final quarterly report, October 1, 1995--December 31, 1995
In this quarter, we successfully prepared a granular catalyst required for decomposing compound number 9 in the catalytic membrane reactor. The surface and porous properties of this catalyst are similar to the properties of the ceramic membrane surface. Thus, the catalytic reaction pattern from the granular catalyst is expected to be similar to that from the membranes surface. Further, this catalyst demonstrates a typical property of acid catalysts. The catalytic membrane reactor activity will be resumed in the next quarter using the catalyst prepared in this quarter. In addition, carbon coating of this catalyst did not reduce its acidic property significantly. More study will performed to determine the role of the carbon coating.
Date:
December 31, 1995
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Advanced coal liquefaction. Quarterly Final report, July--September 1995
This quarterly report summarizes the comprehensive characterization of the silica-modified membrane system designed for studying the conversion of model compound {number_sign}9, 4-(1-naphthylmethyl)bibenzyl, at 400 {degrees}C. The conversion of compound {number_sign}9 through the tubular and porous surface of the membrane was determined. No reaction was observed for compound {number_sign}9 through the tubular surface at 400 {degrees}C and 200 psi. About 60-70% of compound {number_sign}9 was converted through the porous surface of the silica-modified Al{sub 2}O{sub 3}. Majority of the conversion (approximately 30-45%) was resulted from the breaking of bond ``d and/or e`` to form 4-(1-naphthylmethyl)ethylbenzene (or 4-(1- naphthylmethyl)methylbenzene). Minor reactions products (10-20%) were obtained via breaking of bonds a and b to form bibenzyl and methyl bibenzyl. The silica-modified Al{sub 2}O{sub 3} membrane surface appears more reactive but less specific than the carbon surface (as a catalyst) reported in the literature. The result obtained from this quarter provided the background about the reactivity of the membrane surface without packed catalysts. In the next quarter, we will concentrate on the incorporation of the catalyst to evaluate the selective removal of the reaction products by the membrane.
Date:
December 31, 1995
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Advanced combustor design concepts to control NO{sub x} and air toxics. Quarterly report
Direct coal combustion must be a primary energy source for the electric utility industry and for heavy manufacturing during the next several decades because of the availability and economic advantage of coal relative to other fuels and because of the time required to product major market penetration in the energy field. However, the major obstacle to coal utilization is a set of ever-tightening environmental regulations at both the federal and local levels. It is, therefore, critical that fundamental research be conducted to support the development of low-emission, high efficiency pulverized coal power systems. The University of Utah, Massachusetts Institute of Technology (MIT), Reaction Engineering International (REI) and ABB/Combustion Engineering have joined together in this research proposal to develop fundamental understanding regarding the impact of fuel and combustion changes on ignition stability and flame characteristics because these critically affect: NO{sub x} emissions, carbon burnout, and emissions of air toxics. Existing laboratory and bench scale facilities are being used to generate critical missing data which will be used to improve the NO{sub x} and carbon burnout submodels in comprehensive combustion manufacture. 3 figs., 1 tab.
Date:
December 31, 1995
Creator:
Pershing, D.W.; Lighty, J. & Spinti, J.
Object Type:
Report
System:
The UNT Digital Library
Advanced emissions control development program. Quarterly technical progress report {number_sign}4, July 1--September 30, 1995
Babcock and Wilcox (B and W) is conducting a five-year project aimed at the development of practical, cost-effective strategies for reducing the emissions of hazardous air pollutants (commonly called air toxics) from coal-fired electric utility plants. The need for air toxic emissions controls will likely arise as the US Environmental Protection Agency proceeds with implementation of Title III of the Clean Air Act Amendments of 1990. Data generated during the program will provide utilities with the technical and economic information necessary to reliably evaluate various air toxics emissions compliance options such as fuel switching, coal cleaning, and flue gas treatment. The development work is being carried out using B and W`s new Clean Environment Development Facility (CEDF) wherein air toxics emissions control strategies can be developed under controlled conditions, and with proven predictability to commercial systems. Tests conducted in the CEDF will provide high quality, repeatable, comparable data over a wide range of coal properties, operating conditions, and emissions control systems. The specific objectives of the project are to: (1) measure and understand the production and partitioning of air toxics species for a variety of steam coals, (2) optimize the air toxics removal performance of conventional flue gas cleanup systems …
Date:
December 31, 1995
Creator:
Farthing, G.A.
Object Type:
Report
System:
The UNT Digital Library
Advanced Lost Foam Casting Quarterly Report, October 1, 1995--December 31, 1995
Objective is to advance the state of the art in lost foam casting technology, in order to improve the competitiveness of the US metals casting industries. The following tasks are reported on pyrolysis defects and sand distortion, bronze casting technology, steel casting technology, sand filling and compaction, coating technology, precision pattern production, and computational modeling.
Date:
December 31, 1995
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Advanced materials for solid oxide fuel cells
The purpose of this research is to improve the properties of the current state-of-the-art materials used for solid oxide fuel cells (SOFCs). The objectives are to: (1) develop materials based on modifications of the state-of-the-art materials; (2) minimize or eliminate stability problems in the cathode, anode, and interconnect; (3) Electrochemically evaluate (in reproducible and controlled laboratory tests) the current state-of-the-art air electrode materials and cathode/electrolyte interfacial properties; (4) Develop accelerated electrochemical test methods to evaluate the performance of SOFCs under controlled and reproducible conditions; and (5) Develop and test materials for use in low-temperature SOFCs.
Date:
December 31, 1995
Creator:
Armstrong, T. & Stevenson, J.
Object Type:
Article
System:
The UNT Digital Library
Advanced multistage turbine blade aerodynamics, performance, cooling, and heat transfer
The gas turbine has the potential for power production at the highest possible efficiency. The challenge is to ensure that gas turbines operate at the optimum efficiency so as to use the least fuel and produce minimum emissions. A key component to meeting this challenge is the turbine. Turbine performance, both aerodynamics and heat transfer, is one of the barrier advanced gas turbine development technologies. This is a result of the complex, highly three-dimensional and unsteady flow phenomena in the turbine. Improved turbine aerodynamic performance has been achieved with three-dimensional highly-loaded airfoil designs, accomplished utilizing Euler or Navier-Stokes Computational Fluid Dynamics (CFD) codes. These design codes consider steady flow through isolated blade rows. Thus they do not account for unsteady flow effects. However, unsteady flow effects have a significant impact on performance. Also, CFD codes predict the complete flow field. The experimental verification of these codes has traditionally been accomplished with point data - not corresponding plane field measurements. Thus, although advanced CFD predictions of the highly complex and three-dimensional turbine flow fields are available, corresponding data are not. To improve the design capability for high temperature turbines, a detailed understanding of the highly unsteady and three-dimensional flow through multi-stage …
Date:
December 31, 1995
Creator:
Fleeter, S. & Lawless, P.B.
Object Type:
Article
System:
The UNT Digital Library
Advanced neutron source project information management. A model for the future
The Advanced Neutron Source (ANS) is a proposed new research facility that will provide steady-state beams of neutrons for experiments by more than 1000 researchers per year in the fields of materials science and engineering, biology, chemistry, materials analysis, and nuclear science. The facility will also include irradiation capabilities to produce radioisotopes for medical applications, research, industry, and materials testing. This paper discusses the architecture and data flow used by the project, some quantitative examinations of potential cost savings and return on investment and software applications used to generate and manage data across IBM-compatible personal computers, Macintosh, and Unix-based workstations. Personnel management aspects addressed include providing paper copy to users only when needed for adequate technical review, using graded approaches to providing support for numerous user-needed software applications, and implementing a phased approach to compliance with computer-aided acquisition and logistic support (CALS) standards that allows sufficient user flexibility for performing technical tasks while providing needed data sharing and integration.
Date:
December 31, 1995
Creator:
King-Jones, K. & Cleaves, J.
Object Type:
Article
System:
The UNT Digital Library
The advanced neutron source three-element-core fuel grading
The proposed Advanced Neutron Source (ANS) pre-conceptual design consists of a two-element 330 MW{sub f} nuclear reactor fueled with highly-enriched uranium and is cooled, moderated, and reflected with heavy water. Recently, the ANS design has been changed to a three-element configuration in order to permit a reduction of the enrichment, if required, while maintaining or improving the thermal-hydraulic margins. The core consists of three annular fuel elements composed of involute-shaped fuel plates. Each fuel plate has a thickness of 1.27 mm and consists of a fuel meat region Of U{sub 3}Si{sub 2}-Al (50% enriched in one case that was proposed) and an aluminum filler region between aluminum cladding. The individual plates are separated by a 1.27 mm coolant channel. The three element core has a fuel loading of 31 kg of {sup 235}U which is sufficient for a 17-day fuel cycle. The goal in obtaining a new fuel grading is to maximize important temperature margins. The limits imposed axe: (1) Limit the temperature drop over the cladding oxide layer to less than 119{degrees}C to avoid oxide spallation. (2) Limit the fuel centerline temperature to less than 400{degrees}C to avoid fuel damage. (3) Limit the cladding wall temperature to less than …
Date:
December 31, 1995
Creator:
Gehin, J.C.
Object Type:
Article
System:
The UNT Digital Library
An advanced open-path atmospheric pollution monitor for large areas
Large amounts of toxic waste materials, generated in manufacturing fuel for nuclear reactors, are stored in tanks buried over large areas at DOE sites. Flammable and hazardous gases are continually generated by chemical reactions in the waste materials. To prevent explosive concentrations of these gases, the gases are automatically vented to the atmosphere when the pressure exceeds a preset value. Real-time monitoring of the atmosphere above the tanks with automatic alarming is needed to prevent exposing workers to unsafe conditions when venting occurs. This project is to design, develop, and test an atmospheric pollution monitor which can measure concentrations of DOE-specified and EPA-specified hazardous gases over ranges as long as 4km. A CO{sub 2} laser to measure absorption spectra and to determine the distance over which the measurements are made, is combined with an acousto-optic tunable filter (AOTF) to measure thermal emission spectra.
Date:
December 31, 1995
Creator:
Taylor, L.
Object Type:
Article
System:
The UNT Digital Library
The Advanced Photon Source event system
The Advanced Photon Source, like many other facilities, requires a means of transmitting timing information to distributed control system 1/0 controllers. The APS event system provides the means of distributing medium resolution/accuracy timing events throughout the facility. It consists of VME event generators and event receivers which are interconnected with 10OMbit/sec fiber optic links at distances of up to 650m in either a star or a daisy chain configuration. The systems event throughput rate is 1OMevents/sec with a peak-to-peak timing jitter down to lOOns depending on the source of the event. It is integrated into the EPICS-based A.PS control system through record and device support. Event generators broadcast timing events over fiber optic links to event receivers which are programmed to decode specific events. Event generators generate events in response to external inputs, from internal programmable event sequence RAMS, and from VME bus writes. The event receivers can be programmed to generate both pulse and set/reset level outputs to synchronize hardware, and to generate interrupts to initiate EPICS record processing. In addition, each event receiver contains a time stamp counter which is used to provide synchronized time stamps to EPICS records.
Date:
December 31, 1995
Creator:
Lenkszus, F.R. & Laird, R.
Object Type:
Article
System:
The UNT Digital Library
The Advanced Photon Source injection timing system
The Advanced Photon Source consists of five accelerators. The injection timing system provides the signals required to cause a bunch emitted from the electron gun to navigate through intermediate accelerators to a specific bucket (1 out of 1296) within the storage ring. Two linacs and a positron accumulator ring operate at 60Hz while a booster synchrotron ramps and injects into the storage ring at 2Hz. The distributed, modular VME/VXI-based injection timing system is controlled by two EPICS-based input/output controllers (IOCs). Over 40 VME/VXI cards have been developed to implement the system. Card types range from 352MHz VXI timing modules to VME-based fiber optic fanouts and logic translators/drivers. All timing is distributed with fiber optics. Timing references are derived directly from machine low-level rf of 9.77MHz and 352MHz. The timing references provide triggers to programmable delay generators. Three grades of timing are provided. Precision timing is derived from commercial digital delay generators, intermediate precision timing is obtained from VXI 8-channel digital delay generators which provide timing with 25ns peak-to-peak jitter, and modest precision timing is provided by the APS event system. The timing system is fully integrated into the APS EPICS-based control system.
Date:
December 31, 1995
Creator:
Lenkszus, F.R. & Laird, R.
Object Type:
Article
System:
The UNT Digital Library
ADVANCED PHYSICAL COAL CLEANING TO COMPLY WITH POTENTIAL AIR TOXIC REGULATIONS
Studies have indicated that the potentially hazardous trace elements found in coal have a strong affinity for coal pyrite. Thus, by maximizing the rejection of pyrite, one can minimize the trace element content of a given coal while also reducing sulfur emissions. The pyrite in most Illinois Basin coals, however, is finely disseminated within the coal matrix. Therefore, to remove the pyrite using physical coal cleaning techniques, the pyrite must be liberated by grinding the coal to ultrafine particle sizes. Fortunately, the coals being fed to pulverized coal boilers (PCB) are already ground to a very fine size, i.e., 70% passing 200 mesh. Therefore, this research project will investigate the use of advanced fine coal cleaning technologies for cleaning PCB feed as a compliance strategy. Work in this quarter has focused on the processing of a PCB feed sample collected from Central Illinois Power`s Newton Power Station using column flotation and an enhanced gravity separator as separate units and in a circuitry arrangement. The PCB feed sample having a low ash content of about 12% was further cleaned to 6% while achieving a very high energy recovery of about 90% in a single stage column flotation operation. Enhanced gravity treatment …
Date:
December 31, 1995
Creator:
Honaker, R. Q.; Paul, B. C. & Wang, D.
Object Type:
Report
System:
The UNT Digital Library
Advanced physical coal cleaning to comply with potential air toxic regulations. Quarterly report, 1 March 1995--31 May 1995
Studies have indicated that the potentially hazardous trace elements found in coal have a strong affinity for coal pyrite. Thus, by maximizing the rejection of pyrite, one can minimize the trace element content of a given coal while also reducing sulfur emissions. The pyrite in most Illinois Basin coals, however, is finely disseminated within the coal matrix. Therefore, to remove the pyrite using physical coal cleaning techniques, the pyrite must be liberated by grinding the coal to ultrafine particle sizes. Fortunately, the coals being fed to pulverized coal boilers (PCB) are already ground to a very fine size, i.e., 70% passing 200 mesh. Therefore, this research project will investigate the use of advanced fine coal cleaning technologies for cleaning PCB feed as a compliance strategy. Work in this quarter has focused on the processing of a run-of-mine coal sample collected from Amax Coal Company`s Delta Coal mine using column flotation and an enhanced gravity separator as separate units and in circuitry arrangements. The {minus}60 mesh run-of-mine sample having an ash content of about 22% was cleaned to 6% while achieving a very high energy recovery of about 87% and a sulfur rejection value of 53% in a single stage column …
Date:
December 31, 1995
Creator:
Honaker, R. Q.; Paul, B. C.; Mohanty, M. K. & Wang, D.
Object Type:
Report
System:
The UNT Digital Library
Advanced reservoir characterization and evaluation of CO{sub 2} gravity drainage in the naturally fractured Spraberry reservoir. [Quarterly report], September 1, 1995--December 31, 1995
The objective of this research and the pilot project planned is to test the feasibility of CO{sub 2} for recovering oil from the naturally fractured Spraberry Trend Area in the Midland Basin. This notoriously marginal reservoir has confounded operators for 40 years with rapid depletion, low recovery during primary, disappointing waterflood results and low ultimate recovery. Yet, the tremendous areal coverage and large amount of remaining oil (up to 10 Bbbl) warrants further investigation to expend all possible process options before large numbers of Spraberry wellbores need to be plugged and abandoned. CO{sub 2} injection on a continuous, pattern wide basis has not been attempted in the Spraberry Trend. This is due to the obvious existence of a network of naturally occurring fractures. However, it has become clear in recent years that neglecting CO{sub 2} injection as an option in fractured reservoirs may overlook potential projects which may be viable. The 15 well pilot filed demonstration and supporting research will provide the necessary information to quantify the conditions where by CO{sub 2} flooding would be economic in the Spraberry Trend. Technical progress for this quarter is described for field and laboratory experiments.
Date:
December 31, 1995
Creator:
Schechter, D.
Object Type:
Report
System:
The UNT Digital Library
Advanced secondary recovery demonstration for the Sooner unit. Quarterly technical report, October 1, 1995--December 31, 1995
The Sooner {open_quotes}D{close_quotes} Sand Unit is located about 100 miles northeast from Denver. The Cretaceous {open_quotes}D{close_quotes} Sand has good primary recovery but disappointing waterflood performance. The nearest ten waterflood projects in the area of the Sooner Unit produced only an average of 2 percent incremental oil from waterflooding after an average primary recovery of 16 percent OOIP. Poor waterflood recovery is attributed to reservoir heterogeneity, poor reservoir management practices and lack of infill drilling. Three-dimensional (3-D) seismic had not been used in the D-J Basin for exploration or development of {open_quotes}D{close_quotes} Sand reservoirs prior to this project.
Date:
December 31, 1995
Creator:
Sippel, M.A. & Cammon, T.J.
Object Type:
Report
System:
The UNT Digital Library
Advanced sorbent development program. Annual report, November 1, 1994--November 30, 1995
The overall objective of this program is to develop regenerable sorbents for hydrogen sulfide removal from coal-derived fuel gases in the temperature range 343--538 C. Two categories of reactor configurations are being considered: fixed-bed/moving-bed reactors and fluidized-bed (bubbling and circulating) reactors. In addition, a cost assessment and a market plan for large-scale fabrication of sorbents will be developed. As an optional task, a long-term bench-scale testing (100 cycles) of the best fixed-bed/moving-bed and fluidized-bed sorbents will be conducted. The sorbents will have chemical characteristics that permit cyclic regeneration over many cycles without a drastic loss of activity. They must also have physical characteristics that are compatible with the selected reactor, e.g., fixed vs fluidized bed, and which remain acceptable during absorption and regeneration. The sorbents must be capable of reducing the hydrogen sulfide level in the fuel gas to less than 20 ppmv in the specified temperature range and pressures in the range of 1 to 20 atmospheres. The proposed program is divided into several tasks: NEPA Report; Sorbent Preparation; Provision of Bench Unit; Bench Testing; Sorbent Cost Assessment; Topical Report; Market Plan; and Long-Term Testing. Progress on each of these is described.
Date:
December 31, 1995
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Advanced technologies for a compact rf linac FEL
Advanced technologies such as the photoinjector, the short-period microwigglers, and harmonic lasing enable free-electron-laser operation in the infrared with a low-energy ({approximately} 10 MeV) electron beam and thus reduce the size and cost of FELs. The next-generation, rf-linac FEL will fit in a small laboratory and produce high-power, picosecond infrared.
Date:
December 31, 1995
Creator:
Nguyen, D. C.
Object Type:
Article
System:
The UNT Digital Library
Advanced turbine cooling, heat transfer, and aerodynamic studies
The contractual work is in three parts: Part I - Effect of rotation on enhanced cooling passage heat transfer, Part II - Effect of Thermal Barrier Coating (TBC) spallation on surface heat transfer, and Part III - Effect of surface roughness and trailing edge ejection on turbine efficiency under unsteady flow conditions. Each section of this paper has been divided into three parts to individually accommodate each part. Part III is further divided into Parts IIIa and IIIb.
Date:
December 31, 1995
Creator:
Han, Je-Chin & Schobeiri, Meinhard T.
Object Type:
Article
System:
The UNT Digital Library