Engineering Commons^™

Resonance Testing For Fault Detection Of Steam Generator Heat Transfer Tubing Walls, Michael C. Shannon, John Howington, Jesus Sanchez, Colin Sandidge, Jeremy Townsend, Keith Welsh

Chancellor’s Honors Program Projects

No abstract provided.

Effect Of Consumer Knowledge On Energy Consumption Behavior, Sarah Tapscott

Chancellor’s Honors Program Projects

No abstract provided.

Feasibility Of A Touch Sensitive Breast Phantom For Use In The Training Of Physicians In Clinical Breast Examination, Corinne Ashlie Davis, Katherine Lynn Mittura, Grace Elizabeth Copeland, Erica Martina Hawkins

Chancellor’s Honors Program Projects

No abstract provided.

Vibration Fault Detection For Steam Generator Tubing, Brad Patrick Black, Laura Simmons, John Chapman, Jared Jennings, Jacob Johnson, Brian Paul, Kyle Woods

Chancellor’s Honors Program Projects

No abstract provided.

Modeling And Analysis Of Turbojet Compressor Inlet Temperature Measurement System Performance, Brian A Binkley

Masters Theses

Accurate measurement of turbine engine compressor inlet total temperature is paramount for controlling engine speed and pressure ratio. Various methods exist for measuring compressor inlet total temperature on turbojet engines with hydromechanical control. One method involves the use of an ejector-diffuser system (eductor) to pull air from the engine inlet in order to measure the incoming total temperature. Analysis of historical test data has revealed that the inlet temperature measurement can be biased at certain flight conditions causing engine mis-scheduling and off-nominal engine operation. This bias is characterized primarily by adverse heat transfer effects and secondly by poor flow quality …

A Thermal Feasibility Study And Design Of An Air-Cooled Rectangular Wide Band Gap Inverter, Jacob Christopher Faulkner

Masters Theses

All power electronics consist of solid state devices that generate heat. Managing the temperature of these devices is critical to their performance and reliability. Traditional methods involving liquid-cooling systems are expensive and require additional equipment for operation. Air-cooling systems are less expensive but are typically less effective at cooling the electronic devices. The cooling system that is used depends on the specific application.

Until recently, silicon based devices have been used for the solid-state devices in power electronics. Newly developed silicon-carbide based wide band gap devices operate at maximum temperatures higher than traditional silicon devices. Due to the permissible increase …

Development Of Design Guidelines For Cip Joint Connections With U-Bar Reinforcement, Richard Aaron Hanks

Masters Theses

The interstate highway system is vitally dependent upon current and future bridges. These bridges must be designed economically to continue the serviceability with limited maintenance. For precast bridge construction a portion of the design must consider the bridge connections. Some current connections have proved insufficient in serviceability as there is uncontrolled cracking. In other connections there are uncertainties in the calculations (or lack of calculations) which require design guidelines.

This thesis presents design recommendations for precast decking u-bar reinforcement in tension which results from negative moment over a pier. Testing results from the University of Tennessee were analyzed to determine …

Cross-Flow, Staggered-Tube Heat Exchanger Analysis For High Enthalpy Flows, Gary L. Hammock

Masters Theses

Cross flow heat exchangers are a fairly common apparatus employed throughout many industrial processes. For these types of systems, correlations have been extensively developed. However, there have been no correlations done for very high enthalpy flows as produced by Arnold Engineering Development Center’s (AEDC) H2 facility. The H2 facility uses a direct current electric arc to heat air which is then expanded through a converging-diverging nozzle to impart a supersonic velocity to the air. This high enthalpy, high temperature air must be cooled downstream by the use of a cross flow heat exchanger.

It is of interest to evaluate the …

Design Of Equipment For The Study Of Non-Isothermal Flow In Polymer Fluid, Opeoluwa Oluwaseun Kolawole

Masters Theses

The polymer industry is an ever growing industry, and, as it grows, companies are continuously looking for ways to study and understand the behaviors of polymers in relation to the processing and production. This is to ensure the production of high quality products and to improve existing products.
An important parameter during polymer processing is temperature. Temperature control affects several rheological parameters such as viscosity, and in turn the quality of the final products. Frictional or viscous heating is a very important part of polymer processing and occurs in almost every polymer processing operation.
The objective of this research is …

Development And Analysis Of Onboard Translunar Injection Targeting Algorithms, Phillippe Lyles Winters Reed

Masters Theses

Several targeting algorithms are developed and analyzed for possible future use onboard a spacecraft. Each targeter is designed to determine the appropriate propulsive burn for translunar injection to obtain desired orbital parameters upon arrival at the moon. Primary design objectives are to minimize the computational requirements for each algorithm but also to ensure reasonable accuracy, so that the algorithm’s errors do not force the craft to conduct large mid-course corrections. Several levels of accuracy for dynamical models are explored, the convergence range and speed of each algorithm are compared, and the possible benefits of the Broyden and trust-region targeters are …

Thermal Feasibility And Performance Characteristics Of An Air-Cooled Axial Flow Cylindrical Power Inverter By Finite Element Analysis, Jonathan Atef Tawfik

Masters Theses

The purpose of the present study is to determine the thermal feasibility of an air-cooled power inverter. The inverter circuitry layout is designed in tandem with the thermal management of the devices. The cylindrical configuration of the air-cooled inverter concept accommodates a collinear axial air blower and a cylindrical capacitor with inverter cards oriented radially between them. Cooling air flows from the axial fan around the inverter cards and through the center hole of the cylindrical capacitor. The present study is a continuation of the thermal feasibility study conducted in fiscal year 2009 for the Oak Ridge National Laboratory to …

Gpu-Based Implementation Of The Variational Path Integral Method, Shanthan Mudhasani

Masters Theses

Any system in the world constitutes particles like electrons. To analyze the behaviors of these systems the behavior of these particles must be predicted. The ground state energy of a molecule is the most important information about a molecule and can calculate by solving the Schrodinger equation. But as the number of atoms increase, the number of variable (coordinates of the atom) that the equation represent increases by three times. Due to the large state space and the nonlinear nature of the Schrodinger equation, it is very difficult to solver this equation. Quantum Monte Carlo (QMC) is a very efficient …

Classification System For Impedance Spectra, Carl Gordon Sapp

Masters Theses

This thesis documents research, methods, and results to satisfy the requirements for the M.S. degree in Electrical Engineering at the University of Tennessee. This thesis explores two primary steps for proper classification of impedance spectra: data dimension reduction and effectiveness of similarity/dissimilarity measure comparison in classification. To understand the data characteristics and classification thresholds, a circuit model analysis for simulation and unclassifiable determination is studied. The research is conducted using previously collected data of complex valued impedance measurements taken from 1844 similar devices. The results show a classification system capable of proper classification of 99% of data samples with well-separated …

Software Verification For A Custom Instrument Using Vectorcast And Codesonar, Christina Dawn Ward

Masters Theses

The goal of this thesis is to apply a structured verification process to a software package using a set of commercially available verification tools. The software package to be verified is adapted from a project that was developed to monitor an industrial machine at the Oak Ridge National Laboratory and includes two major subsystems. One subsystem, referred to as the Industrial Machine Monitoring Instrument (IMMI), connects to a machine and monitors operating parameters using common industrial sensors. A second subsystem, referred to as the Distributed Control System (DCS), interfaces between the IMMI and a personal computer, which provides a human …

Senior Design Ii Final Report: Red Bull Air Racer, Eric H. Kirchoff, Chad Sutton, Andrew Kail, Sydney Fears

Chancellor’s Honors Program Projects

No abstract provided.

Low Power Rtty And Psk31 Decoder For Ham Radio Applications, Benjamin Bales

Chancellor’s Honors Program Projects

No abstract provided.

The Economic Potential Of The All-Vanadium Redox Flow Battery With A Focus On State Of Charge, Elizabeth Hope Mouron

Chancellor’s Honors Program Projects

No abstract provided.

Modeling Of Human Hand Motion In A Maya Environment, Andrew M. Quinn, Aeshan Ali, Tessa Taylor, Quincy Beasley

Chancellor’s Honors Program Projects

No abstract provided.

Solar Decathlon Controls, James Mitchel Routh, Travis Lathrop, Colby Jarrett, Zach Cross

Chancellor’s Honors Program Projects

No abstract provided.

Team Tennessee Solar Decathlon Hvac System, Susan Katherine Reid, Kevin Kelly, Brad Hight, Sam Felton

Chancellor’s Honors Program Projects

No abstract provided.

Estimates Of Linear Energy Transfer From Solar Energetic Particles In Earth's Upper Atmosphere To Human Tissue In Aluminium Aircraft, Michael Ian Hall

Masters Theses

Radiation from extraterrestrial sources is a concern for the safety of passengers and crew in high altitude aircraft. Cosmic radiation and solar particles constantly bombard the atmosphere with energy. Radiation levels from these sources can vary considerably depending on solar activity cycles and energetic particle events such as solar flares. In order to predict the effects of such events the nature of the radiation spectrum must be characterized, and the individual effects of each radiation type understood. The background radiation spectrum is known to good accuracy and prediction of radiation levels due to specific solar events is currently under investigation. …

Analyzing Supercomputer Utilization Under Queuing With A Priority Formula And A Strict Backfill Policy, Michael David Vanderlan

Masters Theses

Supercomputers have become increasingly important in recent years due to the growing amount of data available and the increasing demand for quicker results in the scientific community. Since supercomputers carry a high cost to build and maintain, efficiency becomes more important to the owners, administrators, and users of these supercomputers. One important factor in determining the efficiency of a supercomputer is the scheduling of jobs that are submitted by users of the system. Previous work has dealt with optimizing the schedule on the system’s end while the users are blinded from the process. The work presented in this thesis investigates …

External Control Of The Gal Network In S. Cerevisiae: A View From Control Theory, Routing Yang, Scott C. Lenaghan, John P. Wilkswo, Mingjun Zhang

Faculty Publications and Other Works -- Mechanical, Aerospace and Biomedical Engineering

While there is a vast literature on the control systems that cells utilize to regulate their own state, there is little published work on the formal application of control theory to the external regulation of cellular functions. This paper chooses the GAL network in S. cerevisiae as a well understood benchmark example to demonstrate how control theory can be employed to regulate intracellular mRNA levels via extracellular galactose. Based on a mathematical model reduced from the GAL network, we have demonstrated that a galactose dose necessary to drive and maintain the desired GAL genes' mRNA levels can be calculated in …

Air Quality And Emissions In The Yangtze River Delta, China, L. Li, C. H. Chen, Joshua Fu, C. Huang, D. G. Streets, H. Y. Huang, G. F. Zhang, Y. J. Wang, C. J. Jang, H. L. Wang, Y. R. Chen, J. M. Fu

Faculty Publications and Other Works -- Civil & Environmental Engineering

Regional trans-boundary air pollution has become an important issue in the field of air pollution modeling. This paper presents the results of the implementation of the MM5-CMAQ modeling system in the Yangtze River Delta (YRD) for the months of January and July of 2004. The meteorological parameters are obtained by using the MM5 model. A new regional emission inventory with spatial and temporal allocations based on local statistical data has been developed to provide input emissions data to the MM5-CMAQ modeling system. The pollutant concentrations obtained from the MM5-CMAQ modeling system have been compared with observational data from the national …

Characteristics, Sources And Formation Of Aerosol Oxalate In An Eastern Asia Megacity And Its Implication To Haze Pollution, Y Jiang, G Zhuang, Q Wang, T Liu, K Huang, Joshua S. Fu, J Li, Y Lin, R Zhang, C Deng

Faculty Publications and Other Works -- Civil & Environmental Engineering

A total of 238 samples of PM_2.5 and TSP were analyzed to study the characteristics, sources, and formation pathways of aerosol oxalate in Shanghai in four seasons of 2007. The concentrations of oxalate were 0.07–0.41 μg m⁻³ in PM_2.5 and 0.10–0.48 μg m⁻³ in TSP, respectively. Oxalate displayed a seasonal variation of autumn>summer>winter>spring in both PM_2.5 and TSP and was dominantly present in PM_2.5 in all samples. Correlation between oxalate and K⁺ and high ratio of oxalate/K⁺ suggested that biomass burning was a secondary source of aerosol oxalate in …

A Regional Chemical Transport Modeling To Identify The Influences Of Biomass Burning During 2006 Base-Asia, Joshua Fu, N C. Hsu, Y Gao, K Huang, C Li, N H. Lin, S C. Tsay

Faculty Publications and Other Works -- Civil & Environmental Engineering

To evaluate the impact of biomass burning from Southeast Asia to East Asia, this study conducted numerical simulations during NASA's 2006 Biomass-burning Aerosols in South-East Asia: Smoke Impact Assessment (BASE-ASIA). Two typical episode periods (27–28 March and 13–14 April) were examined. Two emission inventories, FLAMBE and GFED, were used in the simulations. The influences during two episodes in the source region (Southeast Asia) contributed to CO, O₃ and PM_2.5 concentrations as high as 400 ppbv, 20 ppbv and 80 μg/m³, respectively. The perturbations with and without biomass burning of the above three species were in the …

A Regional Chemical Transport Modeling To Identify The Influences Of Biomass Burning During 2006 Base-Asia, Joshua Fu, N. C. Hsu, Y. Gao, K. Huang, C. Li, N.-H. Lin, S.-C. Tsay

Faculty Publications and Other Works -- Civil & Environmental Engineering

To evaluate the impact of biomass burning from Southeast Asia to East Asia, this study conducted numerical simulations during NASA's 2006 Biomass-burning Aerosols in South-East Asia: Smoke Impact Assessment (BASE-ASIA). Two typical episode periods (27–28 March and 13–14 April) were examined. Two emission inventories, FLAMBE and GFED, were used in the simulations. The influences during two episodes in the source region (Southeast Asia) contributed to CO, O₃ and PM_2.5 concentrations as high as 400 ppbv, 20 ppbv and 80 μg/m³, respectively. The perturbations with and without biomass burning of the above three species were in the …

Decentralized Turbo Bayesian Ompressed Sensing With Application To Uwb Systems, Depeng Yang, Husheng Li, Gregory D. Peterson

Faculty Publications and Other Works -- EECS

In many situations, there exist plenty of spatial and temporal redundancies in original signals. Based on this observation, a novel Turbo Bayesian Compressed Sensing (TBCS) algorithm is proposed to provide an efficient approach to transfer and incorporate this redundant information for joint sparse signal reconstruction. As a case study, the TBCS algorithm is applied in Ultra-Wideband (UWB) systems. A space-time TBCS structure is developed for exploiting and incorporating the spatial and temporal a priori information for space-time signal reconstruction. Simulation results demonstrate that the proposed TBCS algorithm achieves much better performance with only a few measurements in the presence of …