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Browsing Department of Mechanical Engineering by Issue Date

Now showing items 1-20 of 169

Natural Gas/Diesel Dual Fueling of a Prechamber Type Diesel Engine

Ramsey, Charles Burton Jr (University of Alabama Libraries, 1990)

The diesel engine, or the compression ignition engine, was invented by Dr. Rudolph Diesel, who patented the device in 1892. Diesel's patent covered the use of coal dust as a fuel, but also included other solid, liquid, or ...
Kinetic Model of a Collisional Admixture in Dusty Gas and its Application to Calculating Flow Past Bodies

Volkov, Alexey N.; Tsirkunov, Yury M. (2000)

Using the methods of statistical physics, the basic kinetic equation describing the dynamics of a polydisperse admixture of solid particles in a dilute dusty-gas flow is derived. Particle rotation, inelastic collisions, ...
Characterization and comparison of white layer by hard turning versus grinding

Sahani, Jasdeep Singh (University of Alabama Libraries, 2004)

Compared with grinding, hard turning has the potential to make a variety of precision components of superior surface integrity, such as bearings, gears, cams, shafts, tools, dies, etc., while reducing investment, increasing ...
Numerical Modelling of the Magnus Force and the Aerodynamic Torque on a Spinning Sphere in Transitional Flow

Volkov, Alexey N. (2007)

Three dimensional transitional flow over a spinning sphere is studied numerically by the direct simulation Monte Carlo method. The flow is assumed to be steady-state, gas molecules interact with each other as hard spheres ...
3D Numerical Modelling of a Rarefied Gas Flow in the Nearby Atmosphere around a Rotating Cometary Nucleus

Volkov, Alexey N.; Lukyanov, German A. (2007)

A combined 3D model of a nearby atmosphere around an arbitrary rotating spherical cometary nucleus is developed. The model includes a 3D unsteady model of solar radiation absorption and heating of the nucleus material ...
Study of a cold start fuel produced by an active vapor utilization system for use in gasoline powered vehicles

Crawford, John William (University of Alabama Libraries, 2009)

This research focuses on the continuous development of the Active Vapor Recovery System (AVUS) which has the potential to reduce unburned hydrocarbon emissions from automobiles. The AVUS collects, condenses and stores ...
Statistical tomography for scalar turbulence measurements using line of sight optical techniques

Kolhe, Pankaj Sharadchandra (University of Alabama Libraries, 2009)

Turbulence has been an intriguing subject for several decades with past studies focusing on understanding the transition to turbulence and characterizing turbulence using statistical tools. In present research rainbow ...
Computational fluid dynamic analysis of the purification process of the neutrino detector KamLAND

Cossey, Aaron Mitchell (University of Alabama Libraries, 2009)

A simplified two-dimensional finite volume axisymmetric mesh was constructed that represented the geometry of the Kamioka Liquid scintillator Anti-Neutrino Detector (KamLAND) experiment in order to perform a computational ...
A study of heat fluxes in oblique cutting of A390 using infrared imaging and inverse heat conduction

McCarty, Sean Christopher (University of Alabama Libraries, 2009)

The energy released during mechanical cutting is carried away by the metal chips and conduction into the tool. This report focuses on determination of the heat fluxes into the tool during orthogonal cutting using Beck's ...
Vibration absorber implementation for space launch vehicle vibration reduction

Lozes, Brian Andrew (University of Alabama Libraries, 2010)

Vibration is a major problem in space launch vehicles during burning sequences. These vehicles are vulnerable to impulsive and pulsed vibrations like those produced by rocket engines. The Ares I launch vehicle is anticipated ...
CAD modeling and interface stress analysis of diamond-coated tooling

Miao, Chao (University of Alabama Libraries, 2010)

Diamond-coated cutting tools have been widely employed in machining applications due to their superior properties. However, during the deposition process, significant residual stresses will be generated to affect the ...
Development of a low density jet flow apparatus

Smith, Nicholas Edward (University of Alabama Libraries, 2010)

An apparatus was designed and constructed to study supersonic fluid flow in a low temperature and low pressure environment similar to the same conditions associated with near space. The apparatus allows the visualization ...
Background UV in the 300 to 400 nm region affecting the extended range detection of radioactive material

West, William Carey (University of Alabama Libraries, 2010)

The desire to find alternative methods for the detection of radioactive material at extended ranges has resulted in an increased interest in the detection of the air fluorescence resulting from the alpha or beta radioactive ...
Design of a powered above knee prosthesis using pneumatic artificial muscles

Waycaster, Garrett Clinton (University of Alabama Libraries, 2010)

This paper describes the mechanical design for both a one and two degree of freedom above-knee (AK) prosthesis actuated by pneumatic artificial muscles. Powered prosthetics aim to improve the quality of life of the 50% of ...
Lean burn and stratified combustion strategies for small utility engines

Mahato, Chandan (University of Alabama Libraries, 2010)

The research presented in this thesis is an effort to improve small engine combustion through the application of lean combustion. The first part of the research is focused on conducting an experimental investigation into ...
The effects of drive cycle accessory load and degree of hybridization on fuel economy and emissions for hybrid electric buses

Chen, Dennis (University of Alabama Libraries, 2010)

Hybrid Electric Vehicles (HEVs) have gained much attention in recent years. This is mainly due to rising fuel prices and increasing environmental awareness. By implementing electricity as one of the power sources, a HEV ...
Fabrication, characterization, and tribological performance of micro dent arrays produced by laser shock peening on Ti-6Al-4V alloy

Caslaru, Roberto (University of Alabama Libraries, 2010)

Ti-6AL-4V is a widely used structural material in aerospace, biomedical, and power generation industries due to its low density, good corrosion resistance and high strength properties. However, Ti-6Al-4V is not a suitable ...
Dynamic behavior and degradation of a fuel cell system

Jung, Minjae (University of Alabama Libraries, 2010)

In this dissertation, the effect of dynamic operation of a Ballard Nexa 1.2kw fuel cell system is investigated. Three specific topics are considered: the first is an analysis of the dynamic behavior of the fuel cell system, ...
Analytical modeling and design optimization of piezoelectric bimorph energy harvester

Zhang, Long (University of Alabama Libraries, 2010)

As wireless sensor networks continue to grow in size and scope, the limited life span of batteries produces an increasingly challenging economic problem, in terms of not only the capital cost of replacing so many batteries, ...
Spray characteristics and combustion performance of unheated and preheated liquid biofuels

Panchasara, Heena V. (University of Alabama Libraries, 2010)

Recent increases in fuel costs, concerns for global warming, and limited supplies of fossil fuels have prompted wide spread research on renewable liquid biofuels produced domestically from agricultural feedstock. In the ...

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Browsing Department of Mechanical Engineering by Issue Date

Browsing Department of Mechanical Engineering by Issue Date

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