Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 22 for “"fuel distribution"”.
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Modeling hydrogen fuel distribution infrastructure
… the structure of the hydrogen production, distribution, and dispensing infrastructure under various scenarios and to discover if any trends become apparent after sensitivity analysis. After reviewing the literature regarding the production, distribution, and dispensing of hydrogen fuel, a …
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PLIF investigation of the fuel distribution in gasoline direct injection fuel sprays
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1997.
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Optimal initial fuel distribution in a thermal reactor for maximum energy production
Using the fuel burnup as objective function, it is desired to determine the initial distribution of the fuel in a reactor in order to obtain the maximum energy possible, for which, without changing a fixed initial fuel mass, the results for different initial fuel and control poison configurations …
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Multicomponent Liquid and Vapor Fuel Distribution Measurements in the Cylinder of a Port -Injected, Spark -Ignition Engine
The engine results show that large-scale charge motion induced during intake is paramount to good mixing during intake and compression. High intake port velocity is important for initial droplet atomization, but does not guarantee complete mixing. Liquid wall impingement can lead to significant …
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Fuel Preparation in the Cylinder of a Port-Injected, Spark Ignition Engine
Liquid fuel in the cylinder was found to be the primary cause of inhomogeneity in the fuel distribution and therefore a principal contributor to HC emission. Much more liquid enters the cylinder with open-valve injection than with closed-valve injection. For some conditions a significant amount of …
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Effect of Flow Distortion on Fuel Mixing and Combustion in an Upstream-Fueled Cavity Flameholder for a Supersonic Combustor
… of an incident shockwave on the flowfield, fuel distribution and combustion within a cavity flameholder with upstream fuel injection. The effect of the shockwave location (on the upstream fuel jet or over the cavity) and shock angle are controlled by adjusting a shock generator mounted in …
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Freight Distribution During Disasters: Measuring and Improving Operational Performance of Critical Systems
… of which are from storms. As the demand for distribution of essential freight increases during disasters, the physical and operational constraints decrease the capacity of the freight distribution systems. Accordingly, public and private-sector stakeholders seek disaster preparedness and …
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Development and Characterization of Direct Formic Acid Fuel Cell for Potable Power Applications
… Imaging (MRI) is used to determine the spatial distributions of water and fuel in the membrane and GDL's of operating DFAFC. MRI images taken with a 14.7 T imaging system, show that the fuel distribution with the operating fuel cell is non-uniform. Generally, there is more fuel in the bottom of …
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Intake flow analysis of a pulsed detonation engine
… a primitive intake manifold system with a single fuel injector located approximately 10 feet upstream of the primary intake valve. Constant fuel mass flow rate at the injector end creates local variations in equivalence ratio throughout the PDE that may have significant impact on overall engine …
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Neutronics analysis for cylindrical assembly using Green's functions
… the neutron flux, criticality condition, or distribution of material in the assembly. It is possible to obtain an analytic solution for the neutron flux for a reactor represented in cylindrical coordinates using a Green's function or Green's function matrix method for both one group and two …
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A visualization study of mixture preparation mechanisms for port fuel injected spark ignition engines
… the mixture preparation process in port fuel injected spark ignition engines. The primary variables in this study were intake valve lift, intake valve timing, injector spray quality, and injection timing. A special visualization engine was used to enable high-speed video of the fuel-air …
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A novel method to evaluate synthetic fuel options for gas turbines in terms of O-ring swelling
Before 1999, all commercial aviation fuel had been produced from petroleum feedstock. With the growth in demand, it has put significant strain on the availability of jet fuel at Oliver Tambo International Airport (ORTIA). In 2008, Sasol was granted an approval to use fully synthetic jet fuel upon …
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Assessing Various Technologies to Remediate a Hydrocarbon Contaminated Aquifer
… in the remedial decision making process. A fuel distribution terminal in the Eastern United States was selected as the test site. A release of diesel and jet fuels from the terminal loading rack area contaminated the unconfined aquifer beneath the terminal and migrated off-site, impacting …
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Experimental study on two-dimensional propagating edge flames: cold flow modeling and flame spread rate measurements
… new apparatus in which a thin stream of gaseous fuel is injected into a low-speed laminar wind tunnel thereby forming a flammable layer along the centerline. The fuel injector consists of aluminum airfoil with a thin slot in its trailing edge, from which fuel is injected. After the initial …
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Laser Diagnostics Applied to Lean Premixed Swirling Flames - Simultaneous Flow Field and Scalar Measurements
… of the flow field. Flame-front visualization and fuel distribution measurements were obtained by use of Planar Laser Induced Fluorescence (PLIF). PLIF of OH radicals, created in regions where high temperature reactions occurred, were used to determine the position, fluctuation, overall shape and …
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New approaches for optical and microoptical diagnostics in IC engines
… based on laser-induced fluorescence (LIF) of the fuel tracers toluene and 3-pentanone. The respective total fluorescence signal and its spectral dis-tribution yield information about temperature, pressure and mixture composition (i.e. fuel/air-equivalence ratios). The fiber-optic spark plug is …
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A Social Logic of Energy: A data science approach to understanding and modelling energy transitions of India’s urban poor
Continued use of traditional solid biomass fuels for cooking in Indian households poses a serious public health risk. Particulate emissions in the form of soot contributed to approximately 600,000 deaths in 2019, a burden that falls disproportionately on women, children, and vulnerable populations. …
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The acceptability of alcohol fuels for automobile engines
… to gasoline for use in modern automobiles. The fuel would provide the western world with a means of extending the natural gasoline resources and the third world a way of cutting down their dependence on the oil producing countries for their energy supply. Alcohols, namely methanol and ethanol, …
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Development of nanosecond-gated laser induced breakdown spectroscopy for fuel mole fraction measurements in supersonic combustion
… specific impulse offered over solid or liquid fuel rockets. Scramjets operate on the same Brayton cycle as typical jet turbine engines; however, there is no rotating compressor. Rather, the scramjet takes advantage of the high dynamic pressure of incoming air and all shockwaves formed by the …
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Laser Diagnostic Techniques with Ultra-High Repetition Rate for Studies in Combustion Environments
… combustible mixture, or rapid, multi-point fuel consumption in a homogeneous charge as a result of compression ignition in an engine cycle. A multi-YAG laser cluster and a high-speed framing camera capable of recording sequences of up to eight image frames, and having a framing rate up to …
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