Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- University of Nebraska - Lincoln (35)
- Missouri University of Science and Technology (12)
- University of Massachusetts Amherst (4)
- New Jersey Institute of Technology (3)
- University of Mississippi (3)
-
- Old Dominion University (2)
- University of New Mexico (2)
- Brigham Young University (1)
- California Polytechnic State University, San Luis Obispo (1)
- Department of Primary Industries and Regional Development, Western Australia (1)
- Portland State University (1)
- Technological University Dublin (1)
- University of Central Florida (1)
- University of Southern Maine (1)
- University of Tennessee, Knoxville (1)
- Utah State University (1)
- Western Kentucky University (1)
- Keyword
-
- Air-to-air heat pump (1)
- Anisotropic (1)
- Coastal Management (1)
- Compliant wall motion (1)
- Control (1)
-
- Control device (1)
- Design (1)
- Diffusers (1)
- Drag reduction (1)
- Edge dislocation (1)
- Elastic solids. (1)
- Eleasticity theory (1)
- Equilibrium core structures (1)
- Etc.--Mathematical models. (1)
- Flexible pipe flows (1)
- Fluid mechanics. (1)
- Georges Bank (1)
- Heap pump (1)
- Heat pump design (1)
- Heat pump evaluation (1)
- Heat pump for Irish climate (1)
- Heat pump seasonal performance (1)
- Heat pump simulation (1)
- Heat pump testing (1)
- Hydraulic servomechanisms (1)
- Industrial Education & Technology (1)
- Johnson potential (1)
- Lakes (1)
- Maine Coast (1)
- Model (1)
- Publication
-
- Nebraska Tractor Tests (35)
- UMR-MEC Conference on Energy / UMR-DNR Conference on Energy (8)
- Mechanical and Aerospace Engineering Faculty Research & Creative Works (4)
- Wind Energy Center Reports (4)
- Dissertations (3)
-
- Ole Miss Engineer (3)
- Mechanical Engineering ETDs (2)
- All Graduate Theses and Dissertations, Spring 1920 to Summer 2023 (1)
- Dissertations and Theses (1)
- Faculty Publications (1)
- Journal of the Department of Agriculture, Western Australia, Series 4 (1)
- Maine Collection (1)
- Masters Theses (1)
- Mechanical & Aerospace Engineering Faculty Publications (1)
- Mechanical & Aerospace Engineering Theses & Dissertations (1)
- Office of the Provost Scholarship (1)
- Other resources (1)
- Retrospective Theses and Dissertations (1)
- WKU Archives Records (1)
- Publication Type
Articles 1 - 30 of 71
Full-Text Articles in Engineering
Increased Aluminum Use And Its Impact On The Life-Cycle Energy Cost Of Automobiles, Yildirim Omurtag
Increased Aluminum Use And Its Impact On The Life-Cycle Energy Cost Of Automobiles, Yildirim Omurtag
UMR-MEC Conference on Energy / UMR-DNR Conference on Energy
This paper examines the life-cycle of a passenger automobile including ore refining, manufacture of components, assembly, driving and recycling to provide a general computerized model to be used in evaluating the impact of various material substitution rates and recycling policies on the total system energy consumption. The emphasis is on the use of increased aluminum to replace iron and steel.
A Solar Energy System For Space Heating And Space Cooling, Thomas J. Mcnamara
A Solar Energy System For Space Heating And Space Cooling, Thomas J. Mcnamara
UMR-MEC Conference on Energy / UMR-DNR Conference on Energy
To help reduce natural gas and electrical operating costs, a retrofit space heating and space cooling solar energy system is integrated into the existing conventional heating and air handling systems serving the exhibit spaces. This installation would not only provide substantial energy cost savings to the Museum, but it would also provide a means of showing and explaining the operation of an actual working solar energy system to the large number of daily visitors to the Museum. This report explains the design, operation and performance of this solar energy system.
A Small Horizontal Axis Wind Turbine Feeding Power Into The Utility Grid, G. C. Thomann, M. Jong, M. H. Snyder
A Small Horizontal Axis Wind Turbine Feeding Power Into The Utility Grid, G. C. Thomann, M. Jong, M. H. Snyder
UMR-MEC Conference on Energy / UMR-DNR Conference on Energy
A small horizontal axis wind turbine, with about a 2 kW power output, was constructed to convert wind energy into AC power to be fed into the utility grid. The machine is intended to model operation of the larger wind generators now being built. The variable pitch rotor is 18 ft in diameter and has a GA(W)-1 blade airfoil. The rotor is fabricated from sitka spruce mounted on a commercial propeller/hub system. Rotor speeds of from 75 to 150 rpm are used in operation. A chain drive and helical gear drive system steps up rotor speed to 1800 - 3600 …
Airfoil Data For Use Of Wind Turbine Designers, Melvin H. Snyder
Airfoil Data For Use Of Wind Turbine Designers, Melvin H. Snyder
UMR-MEC Conference on Energy / UMR-DNR Conference on Energy
This paper reviews design procedures for wind-axis turbine rotors. An "on-design" routine for rotor blade design is presented as well as an "off-design" performance calculation program. Resulting from this review are analyses of desirable characteristics of airfoil sections and of types of data which rotor designers need. Included in the paper are airfoil characteristics for candidate blade sections including 360 degree data for GA(W)-1 and GA(W)-2 airfoils.
Low Head Power Generation With Bulb Turbines, J. L. Carson, R. S. Samuelson
Low Head Power Generation With Bulb Turbines, J. L. Carson, R. S. Samuelson
UMR-MEC Conference on Energy / UMR-DNR Conference on Energy
Because of uncertainties, delays, and high costs associated with alternative electric energy sources, many agencies responsible for generation of electrical power are investigating means of replacing or supplementing their existing hydroelectric facilities. In the head range between 10 and 60 feet, the bulb-type generating unit, in which the generator is enclosed in a metal capsule within the water passage, has many advantages, including higher efficiency and lower cost, over other types of turbines. Two of the municipalities in the United States which have recently conducted feasibility studies for installing bulb turbines in their systems are the City of Idaho Falls, …
4th Annual Umr-Dnr Conference On Energy -- Entire Proceedings, University Of Missouri--Rolla
4th Annual Umr-Dnr Conference On Energy -- Entire Proceedings, University Of Missouri--Rolla
UMR-MEC Conference on Energy / UMR-DNR Conference on Energy
No abstract provided.
Heat Recovery Devices For Building Hvac Systems, Ronald H. Howell, Harry J. Sauer Jr.
Heat Recovery Devices For Building Hvac Systems, Ronald H. Howell, Harry J. Sauer Jr.
UMR-MEC Conference on Energy / UMR-DNR Conference on Energy
The opportunities and advantages of air-to-air heat recovery are described. The five basic types (rotary regenerative, coil loop run around, open run-around, heat pipe, and plate type) are described and their typical performance is presented. The potential savings in operating costs as well as initial equipment costs for common applications are presented.
A Systems Study Of Our Energy Problems, S. C. Lee
A Systems Study Of Our Energy Problems, S. C. Lee
UMR-MEC Conference on Energy / UMR-DNR Conference on Energy
The diminishing supply of petroleum and natural gas has induced many concerned citizens as well as many interest groups to study energy problems. Based on different sources of information and various degrees of economical consideration, conflicting conclusions have been reached. To help resolve this situation, a systems study was conducted. The available statistics on the supply and demand of energy were examined. The resources of nuclear energy, fossil fuel, and renewable energy sources were analyzed. Considerations were weighted equally on energy content, resource availability, existing technology, and consumer economics as well as on the impact of ecology and sociology. The …
An Annotated Bibliography Of Ocs Documents In Maine, Maine State Planning Office
An Annotated Bibliography Of Ocs Documents In Maine, Maine State Planning Office
Maine Collection
An Annotated Bibliography of OCS Documents in Maine
Outer Continental Shelf Memorandum 1
Compiled by Edward H. Shenton & Charles S. Colgan
Maine Coastal Program, Maine State Planning Office, Augusta, Maine, 1977.
Contents: 1. Introduction / 2. OCS - General / 3. OCS - Federal Regulations / 4. Economic Aspects / 5. Environmental Studies / 6. Oil Spills - Effects and Studies / 7. Onshore Effects / 8. The North Sea Experience / 9. Legal Aspects / 10. Petroleum Drilling Technology
The Development And Testing Of A Fluidic/Pneumatic Position Servo, David Lyle Portin
The Development And Testing Of A Fluidic/Pneumatic Position Servo, David Lyle Portin
Dissertations and Theses
This thesis reviews the design and analysis of a fluidic/pneumatic position servo. Rolling diaphragm piston actuators are used for the system drive, and a hydrostatic gas journal bearing is used as the position sensor. The servo has a 1 inch range which is monitored using an electrical capacitive position transducer that was built as an integral part of the system.
Open-loop frequency response testing provides the basis for a mathematical model of the system.
The servo response is linear at frequencies up to 3 Hertz.
The frequency response appeared to be limited by the design of the gas bearing sensor, …
Optimal Control Of A Large Space Telescope Using An Annular Momentum Control Device, Arun Anant Nadkarni
Optimal Control Of A Large Space Telescope Using An Annular Momentum Control Device, Arun Anant Nadkarni
Mechanical & Aerospace Engineering Theses & Dissertations
Application of a new development in the field of momentum storage devices, the Annular Momentum Control Device (AMCD), to the twin problems of large angle maneuvers and fine pointing control is considered. The basic concept of the AMCD consists of a spinning rim, with no central hub area, suspended by a minimum of three magnetic bearings, and driven by a noncontacting electromagnetic spin motor. The dissertation considers in detail the design of an optimal controller to achieve both large angle maneuvers and the fine pointing control of a Large Telescope (LST) with a single configuration, consisting of a single AMCD …
A Fast Boundary Tracking Alogorithm For Constrained Nonlinear Mathematical Programming Problems, Jacob Yaghoub Moradi
A Fast Boundary Tracking Alogorithm For Constrained Nonlinear Mathematical Programming Problems, Jacob Yaghoub Moradi
Dissertations
A fast search algorithm for the solution of nonlinear mathematical programming optimization problems is presented in this thesis. A gradient search procedure is combined with a "Boundary Tracking"(BT) method using the feasible direction finding method of Zoutendijk for generating a feasible starting direction along the feasible-infeasible boundary.
The algorithm is applied to the minimum weight design of submersible, circular, cylindrical shells reinforced by equally spaced "T" type frames. This problem had produced algorithm failure in two earlier studies and was only recently solved by the Direct Search-Feasible Direction Algorithm (DSFD) which was shown by recent comparison studies to be among …
Energy Conservation And Economic Analysis Of Residential Refrigerators, Robert A. Hoskins
Energy Conservation And Economic Analysis Of Residential Refrigerators, Robert A. Hoskins
Masters Theses
A detailed computer model is developed to calculate energy flows and electricity use for residential refrigerators. Model equations are derived from application of the first law of thermodynamics, analysis of manufacturers' literature, and related studies. The model is used to evaluate the energy (and associated initial cost) impacts of alternative designs to reduce refrigerator energy use.
Model results show that 56% of the total heat gain in a typical 0.45 m3 (16 ft3) top-freezer refrigerator is due to conduction through cabinet walls and doors. The remaining 44% is from door openings, heaters, fans, food, gasket area infiltration, …
Investigation Of Evaporation From Grooved Inverted Meniscus Heat Pipe Wicks, Richard Clarke Oliver
Investigation Of Evaporation From Grooved Inverted Meniscus Heat Pipe Wicks, Richard Clarke Oliver
Mechanical Engineering ETDs
The heat transfer process for a special class of wick fed grooved heat pipe evaporators was investigated analytically and experimentally. The heat pipes studied had vapor release slots cut through the evaporator wick to enhance removal of the vapor generated in the evaporator. As a result of the slots, the liquid menisci formed between the groove tips and the transport wick rather than at the base of the grooves as normally observed. This type of heat pipe evaporator is referred to as an inverted meniscus design.
A comprehensive survey of the literature was completed to establish the existing state of …
Lower Bounds To Colunm And Plate Buckling Loads, Pen-Yuan Shih
Lower Bounds To Colunm And Plate Buckling Loads, Pen-Yuan Shih
Mechanical Engineering ETDs
The complexity inherent in the theory of elastic stability has resulted in the extensive use of approximate techniques for determining buckling loads. The Rayleigh quotient provides reasonable answers for a surprisingly broad category of problems. However, the quotient is an upper bound to the buckling load and for certain engineering structures, further it is difficult to estimate the error. A rigorous and conservative analysis requires that a lower bound be computed.
There are several techniques for finding lower bounds to eigenvalues but because of various complicating factors none is routinely used for elastic stability analyses. The purpose of this dissertation …
A Thermal Energy Storage Tank Model For Solar Heating, Robert Arthur Pate
A Thermal Energy Storage Tank Model For Solar Heating, Robert Arthur Pate
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The results of a combined theoretical and experimental study of the kinetics of a hot-liquid energy-storage tank are presented. A physical model is developed which accurately describes the thermal stratification behavior in a storage tank. The governing differential equations are developed for the physical model. A numerical solution to the system of equations is presented. Some existing models were examined and the predicted results of each are discussed. The concepts developed can be used to predict the thermal stratification behavior in a storage tank under most conceivable operating conditions. These conditions include flow configurations at the top and the bottom …
Dynamic Analysis Of Structures With Solid-Fluid Interaction, Rennee Ramona Pedrido
Dynamic Analysis Of Structures With Solid-Fluid Interaction, Rennee Ramona Pedrido
Dissertations
Interaction between solid and fluid has been recognized to be an important factor in the areas of aeroelasticity, hydroelasticity, and the study of flow-induced vibration in nuclear reactor components. This study develops a finite element model for interaction between an elastic solid and a fluid medium. Plane triangular finite elements have been used separately for fluid, solid, and solid-fluid continua and the equivalent mass, damping, and stiffness matrices and interaction load arrays for all elements are derived and assembled into global matrices. The global matrix differential equation of motion developed is solved in time to obtain the pressure and velocity …
Atomic Simulation Of The Al2 (111) (110) Edge Dislocation In Alpha-Iron, Brent L. Adams, P. C. Gehlen, J. P. Hirth, R. G. Hoagland
Atomic Simulation Of The Al2 (111) (110) Edge Dislocation In Alpha-Iron, Brent L. Adams, P. C. Gehlen, J. P. Hirth, R. G. Hoagland
Faculty Publications
The authors are pleased to acknowledge: the support of this research by the National Science Foundation under Grant DMR 74-21243 and by the provision of computer time by The Ohio State University and by Battelle Columbus Laboratories; and helpful comments on the manuscript by V Vitek. Computer simulation is used to obtain the plane strain and non-plane strain equilibrium core structures for the a/2 <111> {110} edge dislocation in alpha-iron as modelled by the Johnson potential. The methods of the integral formulation of anisotropic linear eleasticity theory are employed in the analysis. Flexible core boundary methods reveal that positive volume expansions …111>
Ua64/3 Readout, Wku Industrial Education & Technology
Ua64/3 Readout, Wku Industrial Education & Technology
WKU Archives Records
Newsletter includes articles:
- Renovation of Industrial Education Building Nearing Completion
- Tomazic, Norman. Basic Industrial Education: Futures Oriented "Sabre-toothed" Curriculum?
- Conley, Franklin. Comments re: departmental news
- New Electricity / Electronics Facilities
- WKU Student Receives KIEA Scholarship, Bonnie Thomerson
- Zax, Carol. Communication & Interaction
- Pittman, Frank. Guitars, Guitars, Guitars re: Hascal Haile
- IE&T One-Liners
- Walter Nalbach Scholarship Fund
Thermal Stratification And Circulation Of Water Bodies Subjected To Thermal Discharge, Mohammad A. Borhani
Thermal Stratification And Circulation Of Water Bodies Subjected To Thermal Discharge, Mohammad A. Borhani
Dissertations
A three-dimensional analytical model for large water bodies is presented. Time histories and spatial distribution of pressure, velocity and temperature in water bodies, subjected to thermal discharge, are determined employing a digital computer. The dynamic response is obtained for a rectangular water body by applying a finite difference method to the mass, momentum and energy balance equations. These partial differential equations are algebraically manipulated to obtain; 1) three parabolic differential equations integrated temporally to find the horizontal velocity components and temperature; 2) one algebraic integral equation to get the vertical velocity component; 3) one elliptic differential equation integrated spatially to …
Laser Doppler Anemometry For Flow Measurement, William W. Durgin, Lawrence C. Neale
Laser Doppler Anemometry For Flow Measurement, William W. Durgin, Lawrence C. Neale
Office of the Provost Scholarship
Laser doppler anemometers are non-invasive, linear, and inherently precise. Calibration, in the usual sense, is not necessary; length and frequency measurements suffice to establish velocity at a spatial point. Measurements were made at points in the cross-sections of two square ducts containing water flow. The points were selected in conformance with a numerical integration scheme to be used for volumetric flow rate determination from the velocity measurements. The experiments were performed in a primary calibration facility at flows up to 1.25 m3/sec using ducts with sides 46 and 92 cm. The anemometer, operating in forward scatter differential mode …
Studies Of Vibrational Surface Modes In Ionic Crystals. I. Detailed Shell-Model Studies For The Unrelaxed (001) Face Of Seven Crystals Having The Rocksalt Structure, T. S. Chen, F. W. De Wette, G. P. Alldredge
Studies Of Vibrational Surface Modes In Ionic Crystals. I. Detailed Shell-Model Studies For The Unrelaxed (001) Face Of Seven Crystals Having The Rocksalt Structure, T. S. Chen, F. W. De Wette, G. P. Alldredge
Mechanical and Aerospace Engineering Faculty Research & Creative Works
We present a comprehensive, unified account of the lattice dynamics of unrelaxed (001) faces of seven crystals having the rock salt structure, three of which have an absolute gap between the acoustical and optical bulk bands (RbF, RbCl, and NaI) and four of which have overlap between these bulk bands (NaF, NaCl, LiF, and MgO). The results are obtained from calculations of the normal modes of a thin crystal film in which the ionic interactions are described by the rigid-shell model. An outline of the formulation of the shell model for the film is given, and the rapid convergence of …
Preliminary Report: Umass Wind Turbine Operation, None Listed
Preliminary Report: Umass Wind Turbine Operation, None Listed
Wind Energy Center Reports
No abstract provided.
Investigation Of The Feasibility Of Using Windpower For Space Heating In Colder Climates. Phase Ii Progress Report., William E. Heronemus, Duane E. Cromack
Investigation Of The Feasibility Of Using Windpower For Space Heating In Colder Climates. Phase Ii Progress Report., William E. Heronemus, Duane E. Cromack
Wind Energy Center Reports
No abstract provided.
Wind And Solar Residential Heating Systems. Energy And Economics Study, Ghazi Darkazalli, John G. Mcgowan
Wind And Solar Residential Heating Systems. Energy And Economics Study, Ghazi Darkazalli, John G. Mcgowan
Wind Energy Center Reports
This work is primarily concerned with the analytical design of wind space and water heating systems for residences. A development of a digital computer based methodology to calculate system performance and costs is presented. In addition to wind powered systems, solar, and combined wind and solar systems are considered in detail. The analysis i s based on two separate computer programs: An energy program that determines system performance as a function of subcomponent parameters and auxiliary energy requirements, and an economics program that calculates present and future (mass produced) costs of the wind and/or solar components and system. Complete details …
Instrumental And Initial Experimental Testing Of Solar Habitat I, L. S. Socha, John G. Mcgowan
Instrumental And Initial Experimental Testing Of Solar Habitat I, L. S. Socha, John G. Mcgowan
Wind Energy Center Reports
This report presents a description of the analytical and experimental procedures used to determine the performance of all subsystems and models for Solar Habitat I. It includes a description of the instrumentation necessary for evaluating all subsystems and models and the corresponding test methods used. Experimental test data is presented and compared with the results based on previously developed analytical models.
Mixed Convection Across A Horizontal Cylinder With Uniform Surface Heat Flux, A. Mucoglu, T. S. Chen
Mixed Convection Across A Horizontal Cylinder With Uniform Surface Heat Flux, A. Mucoglu, T. S. Chen
Mechanical and Aerospace Engineering Faculty Research & Creative Works
No abstract provided.