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 29 for “"Combustion gases."”.
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Cupellation in contact with combustion gases
Open Restriction set for Item 118099 on 2021-08-09T15:46:07Z with date null by bran3@illinois.edu.
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Application of synthetic molecular sieve zeolites and silica gel towards the separation of sulfur dioxide from combustion gases
… for use as contacting media in a process for combustion gas desulfurization was performed. Linde Synthetic Molecular Sieves types 13X and AW500 and Davison Silica Gel were the materials studied. The motivation for this investigation was based on the premise that a suitable method for removing …
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Numerische Untersuchung abgelöster Düsenströmungen
… are discussed. To study nozzle flows with hot combustion gases the gas model is improved. For the simulation of the Vulcain-engine chemical equilibrium is assumed. Vulcain shows flow separation with and without reattachment. The appearance of the cap-shock pattern or the Mach disk is governed …
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Development of an infrared gaseous radiation band model based on NASA SP-3080 for computational fluid dynamic code validation applications
… SP-3080, Handbook of Infrared Radiation from Combustion Gases. Improvements to the NASA SP-3080 model using the N I RA T AM data files have been made. The model and its theoretical basis are thoroughly described. Results are presented and are compared with results from the band models …
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Hot jet ignition delay characterization of methane and hydrogen at elevated temperatures
… to a better understanding of ignition by hot combustion gases which finds application in internal combustion chambers with pre-chamber ignition as well as in wave rotor engine applications. The experimental apparatus consists of two combustion chambers: a pre chamber that generates the …
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Techno-economic analysis of pressurized oxy-fuel combustion power cycle for CO₂ capture
… and sequestration. In this regard, oxy-fuel combustion is a promising new technology for capturing carbon dioxide in power generation systems utilizing hydrocarbon fuels. Combustion of a fuel in an environment of oxygen and recycled combustion gases yields flue gases consisting predominantly …
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Solid propellant slow cookoff experiments with advanced diagnostics
… spectrometry measurements on decomposition and combustion gases, and images of the surface of the carbon fiber case used in digital image correlation to yield mechanical displacement. Single base ammonium nitrate propellant was the first propellant composition used in developing the test …
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The transport of high concentrations of carbon monoxide to locations remote from the burning compartment
… the oxygen entrainment into the compartment fire gases entering the hallway. With a fixed size opening connecting the compartment to the hallway, the oxygen entrainment was varied by changing the depth of the oxygen deficient hallway upper-layer. In experiments where compartment fire gases entered …
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FUEL NITROGEN CONVERSION DURING FUEL RICH COMBUSTION OF PULVERIZED COAL AND CHAR
… nitrogen has been investigated during fuel rich combustion. The experiments were done with the objective of clarifying the roles of NO, HCN, and NH₃, and char nitrogen in the post-combustion gases in the first, fuel rich stage of a staged combustor. The experimental apparatus includes a downflow …
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Heat transfer between a supernatant gas and a flowing shallow gas- fluidized bed of solids
… tray”) is proposed for heat recovery from hot gases and for heat management in exothermic catalytic reactions, which involves a supernatant gas (S-gas) flowing over a shallow fluidized bed of solids. This thesis presents the results of bench-scale and pilot-scale experimental studies that …
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Experimental and Computational Study of Heat Transfer on a Turbine Blade Tip with a Shelf
… is necessary for operation as the temperature of combustion gases is higher than the melting temperature of the turbine materials. The gap between rotating turbine blades and the stationary shroud provides an unintended flow path for hot gases. Gases that flow through the tip region cause pressure …
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High-Temperature Performance of Carbon Fiber Reinforced Cyanate Ester Composites Filled with Nano-Ceramics
… to protect their internal structure from hot combustion gases and as heat shielding for planetary entry also. Different loading levels (5wt%, 7.5wt% and 10wt%) of zirconium dioxide (ZrO2) and boron carbide(B4C) nano-ceramics are dispersed into the cyanate ester resin using three roll mill and …
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Heat transfer between a supernatant gas and a flowing vibrofluidized bed of solids
A novel concept of recovering heat from hot gases using countercurrently flowing vibrofluldized solids (that is, solids levitated solely by mechanical vibration) has been proposed and tested. Based on a theoretical heat transfer model, the heat transfer coefficient between the air and the solids …
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In-situ synchrotron studies of turbine blade thermal barrier coatings under extreme environments
… to impose a thermal gradient between the hot combustion gases and the underlying superalloy substrate in engine turbine blades. Yttria Stabilized Zirconia (YSZ) is an industry standard high temperature ceramic for turbine applications. The protective coating is adhered to the substrate using a …
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Edge-Flames and Combustion at the Microscale
… of unity. The thermal coupling between the combustion field and conductive burner walls in externally-heated, straight-tube, single-pass microburners is studied numerically for premixed and nonpremixed reactants. The transient dynamics of the premixed flame fronts are controlled by the …
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The Effect of Blade Row Interaction on Rotor Film Cooling
… is required to protect metal parts from hot combustion gases. Reduction in coolant mass flow increases cycle efficiency, and hence reduces greenhouse gas emissions. However, the lifespan of a cooled component is sensitive to the metal temperature within the part. A designer requires …
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A Method to Characterize Gas Turbine Vane Performance Using Infrared Thermography
… environments – extremely high temperature combustion gases, much exceeding material melting temperatures, flowing over them at enormous pressures. It is necessitated due to the increased efficiency and power output at these conditions. However, this also means that, in spite of the …
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Controller Design for a Swirl Injection Hybrid Launch Vehicle
… new development of rocket engines which swirl combustion gases to gain combustion stability benefits, and in the case of hybrid rocket engines, fuel regression benefits as well. The stability of the launch vehicle dynamics due to the internal torque has not been discussed before. To the …
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A Computational Fluid Dynamics Model to Simulate Wood Combustion
… Furthermore, firebrand generation from wood combustion is the primary mechanism for wild land fire spread. In order to predict various performance parameters of residential heaters and predict wood degradation behavior for fire safety, a comprehensive understanding of wood combustion is …
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