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Emissions And Operational Aspects Of Methanol As An Alternative Fuel In A Stationary Gas Turbine, Richard William Guiler
Emissions And Operational Aspects Of Methanol As An Alternative Fuel In A Stationary Gas Turbine, Richard William Guiler
Graduate Theses, Dissertations, and Problem Reports (ETD)
During this research techniques have been developed to measure the lubricating properties of methanol and various additives. Suitable lubricant additives were found to improve methanol's lubricity to equal that of aviation kerosene, with as little as 1% additive. The lower heating value of methanol required modifications to the WVU gas turbine's fuel system and atomizer, to provide higher flow rate of fuel then required with aviation kerosene. The gas turbine was modified and operated on methanol for an extended period, without failure. Exhaust gas emissions were tested for carbon monoxide (CO), carbon dioxide (CO2), oxides of nitrogen (NOx), total hydrocarbons …
Mechatronics For Sophomore-Level Mechanical Engineering Students, David Thomas Morris
Mechatronics For Sophomore-Level Mechanical Engineering Students, David Thomas Morris
Graduate Theses, Dissertations, and Problem Reports (ETD)
As mechanical product designs become more complex, integrating electromechanical components with embedded control circuitry, the need for engineering graduates with a diversified educational background in multidisciplinary applications has been recognized within many facets of industry. The focus of this research was to create a series of laboratory experiments and a capstone project based on a survey of literature from current educators that could be used to introduce sophomore-level mechanical engineering students to fundamentals in the field known as "mechatronics", which incorporates the traditional disciplines of mechanical, electrical and software engineering. The lab exercises utilize the Handy Board microcontroller from MIT …
Fine-Scale Modeling Of Failure In An Adhesive Layer, Pulkit V. D. Mathur
Fine-Scale Modeling Of Failure In An Adhesive Layer, Pulkit V. D. Mathur
Graduate Theses, Dissertations, and Problem Reports (ETD)
Rigid ceramic filter media are used for removing particulate matter from gas streams at high temperatures. As the particulate matter (dust cake) collects on the surface of the filter, the filtration pressure increases; to maintain an economical operation the dust cake must be removed periodically by back-pulse cleaning. Often the dust cake is not removed completely by the back-pulse pressure and the resulting patchy cleaning affects operation.;The thesis presents the results from a fine scale modeling of the removal of a layer of filter cake by a time dependent pressure pulse. In this model the filter cake is grid in …
Coloring Clique Hypergraphs, Hoifung Poon
Coloring Clique Hypergraphs, Hoifung Poon
Graduate Theses, Dissertations, and Problem Reports (ETD)
Let G = (V, E) be a simple graph. The clique hypergraph of G, denoted as CH( G), has V as its set of vertices, and the maximal cliques as its hyperedges. Let Sk be a set of k colors. A map c : V Sk is a proper k-coloring for CH(G) if any maximal clique of G with at least two vertices receives at least two distinct colors. Let W ⊂ V, and let s ≥ 1. We say that G is (W, s)-extendible if any assignment on W with at most s colors can be extended to a …
Opportunities That Exist For Communication Experts In The Field Of Communication Consulting, Dale Eugene Shriver Ii
Opportunities That Exist For Communication Experts In The Field Of Communication Consulting, Dale Eugene Shriver Ii
Graduate Theses, Dissertations, and Problem Reports (ETD)
This study examined the opportunities that exist for communication experts, particularly graduate students, in the field of consulting. Interviews were conducted with established consultants to determine how consultants describe their job functions, what kinds of consultants are needed in organizations, and what barriers to entry exist for those wishing to enter the field. Results indicate that there are several factors to consider when attempting to enter the field of consultation.
Quality And Postharvest Performance Of Cut Roses Grown In Root Media Containing Coal Bottom Ash, Marlene Karen Cross
Quality And Postharvest Performance Of Cut Roses Grown In Root Media Containing Coal Bottom Ash, Marlene Karen Cross
Graduate Theses, Dissertations, and Problem Reports (ETD)
The vase life of roses grown in coal bottom ash (CBA)-amended media was evaluated. CBA is enriched in calcium, a nutrient implicated in delaying senescence. Four rose cultivars, Cara Mia, Dakota, Santa Fe and Pink Osiana, were grown (from started eye plants) in four media: a 50% CBA medium and a peat: vermiculite medium amended with calcitic and dolomitic lime (1:1) were used as "high calcium" media, whereas a 25% CBA medium and a peat: vermiculite medium amended with dolomitic lime only were used as "low calcium" media. Yield was not different for roses from different media, and a subjective …
Reliability-Based Method For Stability Of Mine Entry Design And Evaluation, Zhouming (Victor) Sun
Reliability-Based Method For Stability Of Mine Entry Design And Evaluation, Zhouming (Victor) Sun
Graduate Theses, Dissertations, and Problem Reports (ETD)
Variability in the physical properties of coal/rock is a major source of uncertainty encountered around mining environment. It causes a considerable variation in strength/stress estimations of mining structures when the coal/rock properties are used. Therefore, the conventional safety factor method on stability assessment of mining structures is a special case of the more general probabilistic method in that it assumes the variability of coal/rock properties is zero. Although the use of probability and statistical methods in the analysis and design of geotechnical structures has grown rapidly in recent years, its application to mining structure design has been slow due to …
Mechanical Property Characterization Of Recycled Thermoplastics, Johnny Edward Bargo
Mechanical Property Characterization Of Recycled Thermoplastics, Johnny Edward Bargo
Graduate Theses, Dissertations, and Problem Reports (ETD)
Reuse of engineering thermoplastics retrieved from discarded computers, monitors and printers called as electronic shredder residue is described in the following thesis. Virgin, blend of virgin and recycled, and 100% recycled polymers such as acrylonitrile butadiene styrene (ABS) and polycarbonate (PC) are characterized for mechanical properties as part of this research. This research consists of characterization of mechanical properties such as tension, bending, compression, impact, hardness, and creep of ABS and PC plastics.;Long-term mechanical property retention and environmental durability are very important for infrastructure and automotive applications. The resins alone do not have the strength or stiffness to meet the …
Enhanced Design For Oxy -Fuel Fired Batch Tanks Using Cfd Methods, Guosheng Kang
Enhanced Design For Oxy -Fuel Fired Batch Tanks Using Cfd Methods, Guosheng Kang
Graduate Theses, Dissertations, and Problem Reports (ETD)
Oxy-fuel firing is more energy efficient and environment friendly than conventional air-fuel firing and its application for glass melting has begun since 1990. This technology has been advanced for continuous glass melting furnaces based on continued research and application experiences accumulation, while its application in batch tanks is experiencing a transition period. Batch tanks are commonly used by the hand and art glass companies. Compared to continuous furnaces, a batch tank has smaller size and higher operation temperature. The four primary concerns in the application of oxy-fuel firing in batch tanks are (1) The high flame temperature of oxy-fuel firing …
Net Section Rupture In Tension Members With Connection Eccentricity, Peter Atwood Bartels
Net Section Rupture In Tension Members With Connection Eccentricity, Peter Atwood Bartels
Graduate Theses, Dissertations, and Problem Reports (ETD)
Tension members consisting of single and double angles, single channels and similar sections are frequently used for lateral bracing and as truss elements. Such members will normally have eccentric connections, and it is often permitted, by current design specifications, to neglect this eccentricity in the design of the member. In this study, load tests were performed on three series of short tension member specimens to investigate the influence of varying connection eccentricity and length on the load capacity of the members. Additionally, studies were conducted to investigate the influence of hole fabrication methods. Two methods were used: punched holes and …
Dynamic Analysis Of A Composite Moving Beam, Ganesh Chandrasekaran
Dynamic Analysis Of A Composite Moving Beam, Ganesh Chandrasekaran
Graduate Theses, Dissertations, and Problem Reports (ETD)
In this thesis, an attempt is made at studying the dynamic characteristics of a composite-moving beam.;The model considered is an overhang beam on simple supports oscillating in the longitudinal direction. The lateral response of the beam is studied due to an initial lateral deflection. The beam is made-up of laminated composite materials. Both symmetric and unsymmetrical lay ups are considered. Since unsymmetrical lay ups introduce bending-axial coupling, axial deformation needs to be considered also. First Order Shear Deformation theory (FSDT) is used to formulate the problem since transverse shear deformations are important for composite beams. When reducing laminate plate theory …
Web-Enabled Cots-Supported Alternative To Interactive Electronic Technical Manual Database (Ietmdb) Specification, Dina Mahfouz Ghobashy
Web-Enabled Cots-Supported Alternative To Interactive Electronic Technical Manual Database (Ietmdb) Specification, Dina Mahfouz Ghobashy
Graduate Theses, Dissertations, and Problem Reports (ETD)
An Interactive Electronic Technical Manual (IETM), is a digital package of information required for diagnosis and maintenance of complex weapon systems and, both, military and commercial equipment. The lack of interoperability within and among IETM systems has become a major challenge to the U.S. Department of Defense (DoD) IETM community. The initial phase of user-level interoperability support has been undertaken by the development of a Web-based Joint IETM Architecture (JIA). Within this architecture, there is a need to develop a standardized Web-enabled alternative to the IETM database specification. Object oriented modeling provides the conceptual foundation for assembling the Web-enabled alternative …
Agricultural Non-Point Source (Agnps) Water Quality Modeling In A Gis Environment, Stephen George Carpenter
Agricultural Non-Point Source (Agnps) Water Quality Modeling In A Gis Environment, Stephen George Carpenter
Graduate Theses, Dissertations, and Problem Reports (ETD)
This thesis project outlines the development and implementation of a complex GIS project in a government agency. The objective of the project was to integrate a public domain GIS package (GRASS) with a commercial structured query language database in order to undertake Agricultural Non-Point Source (AGNPS) water quality modeling. Three general areas of GIS technology were investigated consisting of technical issues involved in linking GIS; the model; database development; and a discussion of system performance from an institutional perspective.
Composition Effects On Macroscopic Solidification Segregation Of Superalloys, Wei Chen
Composition Effects On Macroscopic Solidification Segregation Of Superalloys, Wei Chen
Graduate Theses, Dissertations, and Problem Reports (ETD)
This research work investigates primarily the composition effects on solidification macrosegregation, i.e. freckles, in superalloys. First, the freckling mechanism of superalloys is developed using the physical simulation of freckle formation in specially designed model alloys. It is found that freckles originate from dendrite irregularities at the solidification front. The freckle channels flow downward in Nb-containing alloys and upward in T-containing alloy under horizontal solidification conditions. The horizontal solidification correctly simulates the horizontal component in remelt ingot where freckling potential is the highest. Based on the result, key control parameters for freckling are identified.;Thermodynamic simulation approach is employed to study the …
Developing A Framework For Predicting The Impact Of Its/Cvo Technology In Developing Countries, Mazen Turk
Developing A Framework For Predicting The Impact Of Its/Cvo Technology In Developing Countries, Mazen Turk
Graduate Theses, Dissertations, and Problem Reports (ETD)
This study focuses on freight mobility in developing countries. System improvements depend on state of the art technologies to be deployed in the Transportation Infrastructure. Intelligent Transportation Systems and Commercial Vehicle Operation technologies (ITS/CVO) although a significant investment, offer many improvement alternatives. This study develops a framework for predicting the impact of new technologies on the global transportation system in developing countries. This is done in an effort to reduce cost and improve safety, efficiency and level of service.;The task will be divided into three sections. The first will entail looking at prediction from a global perspective. This will specify …
Prenatal Care Utilization And Its Effect On Pregnancy Outcome In West Virginia, Cortney Robyn Usakewicz
Prenatal Care Utilization And Its Effect On Pregnancy Outcome In West Virginia, Cortney Robyn Usakewicz
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this study was to determine the impact of prenatal care utilization and maternal dietary intake on pregnancy outcome among West Virginia WIC participants. The sample size (102--155) used in this study varied, due to the number of subjects that provided complete information for specific variables. Data were obtained from survey questionnaires, participants' medical records and food frequency questionnaires. Data were analyzed by Statistica using Pearson's and Spearman's correlation.;Results of this study showed that women who experienced transportation problems or had problems with the father of the baby delayed initiation of prenatal care. In turn, these problems negatively …
Web-Based Workflow In Secure Collaborative Telemedicine, Vijayanand Ranganath Bharadwaj
Web-Based Workflow In Secure Collaborative Telemedicine, Vijayanand Ranganath Bharadwaj
Graduate Theses, Dissertations, and Problem Reports (ETD)
Workflow involves the automation of a business process in whole or part with movement of information and tasks between parties according to a set of rules. The ubiquitous nature of the Internet and WWW prompts us to investigate how these entities can be fully exploited to improve the efficiency of any workflow process in a reliable, secure fashion.;This research effort alms to investigate the utility of the internet and specifically the WWW in providing a substrate for complex workflow and to demonstrate that workflow with a high degree of automation and ability to interface with disparate data sources can be …
Designing Neural Networks For The Prediction Of The Drilling Parameters For Kuwait Oil And Gas Fields, Abdulrahman F. Al-Rashidi
Designing Neural Networks For The Prediction Of The Drilling Parameters For Kuwait Oil And Gas Fields, Abdulrahman F. Al-Rashidi
Graduate Theses, Dissertations, and Problem Reports (ETD)
In this study a new methodology was developed to predict the drilling parameters using the Artificial Neural Network. Three models were developed to predict bit type, rate of penetration (ROP), and cost-per-foot (cost/ft), respectively.;The prediction of bit type and other drilling parameters from the current available data is an important criterion in selecting the most cost efficient bit. History of bit runs plays an important factor in bit selection and bit design. Based on field data, the selection of bit type can be accomplished by the use of a neural network as an alternative bit selection method.;Three drilling parameters were …
Hydrogeologic Analysis Of Streamflow In Relation To Underground Mining In Northern West Virginia, David Robert Gill
Hydrogeologic Analysis Of Streamflow In Relation To Underground Mining In Northern West Virginia, David Robert Gill
Graduate Theses, Dissertations, and Problem Reports (ETD)
Land subsidence, caused by longwall mining, has a negative effect on overlying watersheds. Nine streams were monitored from their headwaters to their mouths for discharge, temperature, conductivity, alluvium thickness, and alluvium sediment size. Seven streams are located over undermined longwall panels, with two located over non-undermined areas. Discharge data shows that non-undermined watersheds do not experience stream dewatering, regardless of alluvium thickness or sediment size. Streams located over active or recently mined longwall panels experience water loss that ranges from slight to total. Impacted streams with overall increases in conductivity and decreases in water temperature suggest that lost streamflow travels …
Predicting Permeability And Flow Capacity Distribution With Back-Propagation Artificial Neural Networks, Alexis Jose Riera
Predicting Permeability And Flow Capacity Distribution With Back-Propagation Artificial Neural Networks, Alexis Jose Riera
Graduate Theses, Dissertations, and Problem Reports (ETD)
The prediction of permeability is a critical, key step for reservoir modeling and management of oil recovery operations. Previous studies have successfully demonstrated that the new technology called Artificial Neural Network (ANN), a biologically inspired, massive parallel, distributed information processing system, is an excellent tool for permeability predictions using well log data. This technology overcomes the drawbacks caused by the inherent heterogeneity of the reservoir and lack of sufficient cores or pressure transient tests, allowing to define reservoir characterization within an acceptable accuracy while maintaining costs low. The methodology used in this study takes advantage of this technology to accomplish …
Java-Based Midi Interface For Robot Control, Gaurav Subhash Harode
Java-Based Midi Interface For Robot Control, Gaurav Subhash Harode
Graduate Theses, Dissertations, and Problem Reports (ETD)
Robot offers an excellent means of utilizing high level technology to make a given manufacturing operation more profitable and competitive. Apart from manufacturing, robots are also being utilized in the areas of medicine and agriculture with great returns. Robotic applications now require multiple robots working in a coordinated manner, something similar to an orchestra. This lead to the concept of a Robotic Instrument Digital Interfacing (RIDI) system for real time coordinated control of robotic devices. It provides a novel runtime environment that supports the building and deployment of distributed robotic devices.;The objective of this research is to design and develop …
Inventory And Prediction Of Heavy-Duty Diesel Vehicle Emissions, Justin Michael Kern
Inventory And Prediction Of Heavy-Duty Diesel Vehicle Emissions, Justin Michael Kern
Graduate Theses, Dissertations, and Problem Reports (ETD)
A vehicle emissions inventory is an account of emissions produced by all vehicles in an area. Many different factors can affect the emissions and the measurement of the emissions that are used to create an emissions inventory. These factors for heavy-duty diesel vehicles have been addressed and their relative affect on emissions was evaluated from test data and analytical analyses. These elements can affect the emissions by a factor of 15 depending on testing conditions.;One purpose that an emissions database serves is to provide a source for predicting future emissions for a specific vehicle or many vehicles in a general …
Emissions Testing Of Two Recreational Marine Engines With Water Contact In The Exhaust Stream, Brian E. Mace
Emissions Testing Of Two Recreational Marine Engines With Water Contact In The Exhaust Stream, Brian E. Mace
Graduate Theses, Dissertations, and Problem Reports (ETD)
Recreational marine engine operation effects water quality as well as air quality. Significant quantities of hydrocarbons are discharged into the rivers, lakes, and estuaries used as recreational boating waters. In order to investigate the impact of recreational marine engine operation on water quality, a MerCruiser 3.0LX four-cylinder four-stroke inboard engine and a Mercury 650 two-cylinder two-stroke outboard engine were tested using EPA required certification procedures. Both engines were tested with exhaust gas/cooling water mixing (scrubbing) in the exhaust stream using both freshwater and saltwater. Additionally, the inboard engine was tested without exhaust scrubbing. Gaseous emissions (HC, NOx, CO, and CO2) …
Evaluation Of Lubricants For Cold Forming Of Steels By Double-Cup Extrusion Tests, Shivakumaran Bharadwaj Venkataraman
Evaluation Of Lubricants For Cold Forming Of Steels By Double-Cup Extrusion Tests, Shivakumaran Bharadwaj Venkataraman
Graduate Theses, Dissertations, and Problem Reports (ETD)
The double-cup extrusion testing method was chosen for measuring the pressure and material flow parameters in order to quantify the frictional shear factor between the workpiece and the forming tool in cold metal forming processes. The test was adapted to be used under production conditions and applied to characterize and compare the lubrication properties of different types of lubricants and coatings.;It was found to be a useful approach to estimate the relative efficiency of different lubricants and coating methods. It indicated that one specific lubricant has significantly superior lubricant characteristics than others.;FEA analysis of the experimental setup was constructed to …
Manufacture And Rehabilitation Of Guard-Rail Posts Using Composites For Superior Performance, Swetha Anegunta
Manufacture And Rehabilitation Of Guard-Rail Posts Using Composites For Superior Performance, Swetha Anegunta
Graduate Theses, Dissertations, and Problem Reports (ETD)
The effectiveness of an external composite reinforcement in improving the strength and durability of a conventional CCA treated wood post was studied. A combination of HMR as primer and epoxy as adhesive was found to provide the best possible adhesion of a glass fibers to CCA treated wood. Wrapped samples, representing a scaled down version of the proposed posts were subjected to 6-cycle accelerated aging and freeze-thaw chemical aging (in acidic, alkaline, water and salt water solutions). The retention in mechanical properties was measured using flexure tests and DMTA. The performance in terms of modulus and rigidity was reduced the …
Preliminary Investigation Of Energy Dissipation At Culvert Outlets Using A Riprap Step, Belinda M. Weikle
Preliminary Investigation Of Energy Dissipation At Culvert Outlets Using A Riprap Step, Belinda M. Weikle
Graduate Theses, Dissertations, and Problem Reports (ETD)
One method used to attenuate high-energy flow at culvert outlets is the construction of a riprap energy dissipator. The current riprap design used by the WVDOH experiences problems with excessive sedimentation and is only applicable at culvert outlets where the flow velocity is low. The purpose of this investigation was to construct a testing device to allow for the testing of physical models and produce a preliminary riprap step design that would perform more effectively than the current design. The new design proposed meets the following criteria. It is: (1) Easily constructed on site using available materials; (2) Economically efficient; …
Rollover Stability Of Partially Filled Heavy-Duty Elliptical Tankers Using Trammel Pendulums To Simulate Fluid Sloshing, Mohamed Ibrahim Salem
Rollover Stability Of Partially Filled Heavy-Duty Elliptical Tankers Using Trammel Pendulums To Simulate Fluid Sloshing, Mohamed Ibrahim Salem
Graduate Theses, Dissertations, and Problem Reports (ETD)
Partially filled tankers undergoing turns or lane change maneuvers have a lower rollover threshold than any other type of vehicle. In order to study and simulate the lateral fluid sloshing effects in partially filled elliptical and cylindrical tankers a trammel pendulum has been utilized. The fundamental basis of selecting the appropriate pendulum parameters have been obtained by matching the pendulum dynamic effects with fluid sloshing dynamic effects obtained using Finite Element (FE) fluid models. Elliptical tankers with different aspect ratios and different levels of fill were considered. The trammel pendulum effects were verified against fluid models from two packages (FLUENT …
Contrawound Toroidal Helical Antenna Modeling Using The Fdtd Method, Khaled Mohammad Elsherbini
Contrawound Toroidal Helical Antenna Modeling Using The Fdtd Method, Khaled Mohammad Elsherbini
Graduate Theses, Dissertations, and Problem Reports (ETD)
The contrawound toroidal helical antenna (CTHA) is a patented antenna developed at the Center for Industrial Research Applications (CIRA) of West Virginia University. In this study, a computer numerical model was built to simulate the behavior of printed circuit board versions of the CTHA. The numerical model was built upon the finite difference time domain method (FDTD). The results were compared to results from physical antennas, obtained from the CIRA anechoic chamber located in the WVU hanger, to verify the validity of the results of the numerical model. The results from both the numerical and experimental models were also used …
Refined Turbulence Models For Simulation Of Ic -Engine Cylinder Flows, Ibrahim Yavuz
Refined Turbulence Models For Simulation Of Ic -Engine Cylinder Flows, Ibrahim Yavuz
Graduate Theses, Dissertations, and Problem Reports (ETD)
Turbulence and turbulent mixing are two of the most important factors that influence the efficiency and emissions level in internal combustion (IC) engines, particularly for diesel engines. This study has been performed with the premise to accurately predict in-cylinder turbulence by employing the large eddy simulation (LES) technique. In order to assess the turbulence scales involved correctly, a review of measured and computed scales relevant to IC engines is conducted. An assessment of these is made in comparison with the self-imposed scales of the engine itself. This assessment focuses on the influence of combustion, compression ratio, initial conditions and numerical …
Seepage Through Longitudinal Drainage Trenches, Benjamin T. Staud
Seepage Through Longitudinal Drainage Trenches, Benjamin T. Staud
Graduate Theses, Dissertations, and Problem Reports (ETD)
The objective of this study was to determine how the longitudinal drain system works under laboratory conditions. In this study, a bench-scale model was constructed to assess the flow patterns caused by a trench drain in a slope. The experimental variables include the trench spacing (w), seepage depth (h), and slope angle (theta). In the experimental program, four values of slope angle, three values of trench spacing and three values of seepage depth were considered. Each experiment was performed twice to ensure that the measurements are reproducible. The soil type for the experimental program was selected on the basis of …