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 26 for “"flow temperature"”.
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System Identification and State Estimation for Intake Manifold Charge Flow Temperature of a Compression Ignition Diesel Engine
<p>Intake manifold charge temperature is a factor used in mean value engine models (MVEMs) for the calculation of intake mass air charge and oxygen flow. More stringent emission requirements have led to increased deployment of more advanced engine combustion models onto production engine …
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Non-Invasive Flow Measurement Via Distributed Acoustic Sensing Utilizing Frequency Spectra Analysis of Wall Pressure Fluctuations
… sensing to noninvasively measure volumetric flow rate via multiple unique sensor styles. This work modifies previously used methods of flow detection via fiber optic acoustic sensors affixed onto the exterior body of a flow apparatus. Flow rate measurement methods for two unique sensor styles …
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The effect of synthetic jet driving parameters on heat transfer in microchips cooling channels
… of microchips have a requirement on a junction temperature below 85°C. In order to meet the heat dissipation requirement at the level of 1 MW mˉ² of the next generation microchips, a new cooling approach has been proposed by combining the merits from forced convection in the microchannel and the …
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Analysis of Stresses in Metal Sheathed Thermocouples in High-Temperature, Hypersonic Flows
Flow temperature sensing remains important for many hypersonic aerodynamics and propulsion applications. Flight test applications, in particular, demand robust and accurate sensing, making thermocouple sensors attractive. Even for these extremely well-developed sensors, the prediction of stresses …
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Feasibility of supercritical CO2 coaxial heat exchanger geothermal well conversion with ECO2G technology
… the depth of the well to model the heat flow, temperature and pressure of the sCO2, and electricity production of each heat exchanger. With the electricity production, the NPV and IRR of Case A and Case B were performed, along with a sensitivity analysis. From this study, the feasibility …
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Experimental Investigation of Flow and Wall Heat Transfer in an Optical Combustor for Reacting Swirl Flows
The study of flow fields and heat transfer characteristics inside a gas turbine combustor provides one of the most serious challenges for gas turbine researchers because of the harsh environment at high temperatures. Design improvements of gas turbine combustors for higher efficiency, reduced …
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Large eddy simulation of a fuel-rich turbulent non-premixed reacting flow with radiative heat transfer
… simulation of turbulent non-premixed reacting flow, in particularly for the predictions of soot and NO production, and to investigate the radiative heat transfer during combustion process applying Discrete Ordinates Method (DOM). LES seeks the solution by separating the flow field into …
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Tailoring Intermolecular Interactions for High-Performance Nanocomposites
… an increase in the polyurethane-MWCNT composite flow temperature with increasing hydrogen bonding MWCNT incorporation, as opposed to non-functionalized MWCNT composites which displayed no significant change in flow temperature. Variable temperature Fourier transform infrared spectroscopy (VT …
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Low Carbon n-GaN Drift Layers for Vertical Power Electronic Devices
… several factors, including growth rate, ammonia flow, temperature, pressure, and trimethylgallium (TMGa) flow. Through guided empirical modeling, it was demonstrated that the carbon incorporation in GaN growth could be predicted using a single parameter based on the ratio of ammonia flow to the …
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The design and numerical analysis of a microfluidicssystem for osteogenic differentiation of mesenchymal stemcells.
… control of key parameters such as mass flow, temperature, pH levels mechanicalstresses and more in a tightly controlled and defined three dimensional physio-chemicalenvironment.This thesis investigates possible designs and CFD simulations of the fluid stresses actingon the scaffold to …
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Effluent characterization of flow-through aquaculture operations in West Virginia
… water quality data specific to West Virginia flow-through facilities, in an effort to help concerned parties make informed decisions regarding impending regulations and to examine the potential to increase production, based on effluent pollutant load and permit limitations.;WVU-CEE researchers …
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Aerodynamic performance measurements of a fully scaled, film-coated, turbine stage
… turbine stage. Turbine torque, speed, mass flow, temperature, and pressure were measured and used to calculate efficiency. Pressure ratio, corrected speed, and coolant mass flow were varied parametrically over a range of conditions and compared to a baseline. No distinct trend was seen in …
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Determination of the operating characteristics of an absorption tower
… from data on nine experimental runs at water flow rates varying from approximately 5 to 36 pounds per minute. Temperatures of gas and water, gas flow rate, and carbon dioxide content of the flue gas were held to as limited a range of variation as possible and the data used in the calculations …
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Novel methods and models to validate H2 storage in solid state materials
… of hydrogen storage tank, based on hydrogen flow, temperature or pressure requirements. Lumped modelling is finally compared with results by the numerical simulation of validated macro model. Finally, micro kinetic model is applied on high accuracy sorption data (by IDA) on innovative …
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A Novel Thermal Method for Pipe Flow Measurements Using a Non-invasive BTU Meter
… and non-invasive method that measures fluid flow rate and temperature in pipes. While current non-invasive flow meters are able to measure pipe flow rate, they cannot simultaneously measure the internal temperature of the fluid flow, which limits their widespread application. Moreover, …
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Relationships between material properties and microstructure-mechanical attributes of extruded biopolymeric foams
… phase transition properties (softening temperature, Ts, and flow temperature, Tf) were not good indicators of SME. The concluding part of this study investigated glass transition and rheological properties of cornstarch at different moisture contents (18-30% wet basis) using differential …
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A Molecular Dynamics Study of Sessile Droplet Evaporation
… held rigid while the rest is kept at a constant temperature with a Langevin thermostat. A liquid droplet, consisting of LJ beads as well, is placed on top of the substrate. An appropriate amount of vapor beads are also supplied to the simulation box to help establish liquid-vapor equilibrium. To …
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Bridging Mesoscale Phenomena and Macroscopic Properties in Block Copolymers Containing Ionic Interactions and Hydrogen Bonding
… morphology and a significant increase of flow temperature (Tf) 80 °C above the hard block Tg. After quaternization of pyridine groups, electrostatic interaction, as a second physical crosslinking mechanism, disrupted ordered lamellar morphology and decreased Tf. Yet, extra physical …
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Performance and emission characteristics of an automotive diesel engine using biodiesel fuel with the influence of air intake variables
… grill is vital, in order to fully understand the flow behavior in this AIS. Moreover, when the engine is equipped with turbocharger, the performance of the air intake system is also affected by the exhaust parameter which depends on the combustions of fuel in the engine cylinder. The properties of …
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Microbial community analysis for denitrifying biofilters
… sampling depth and in the direction of biofilter flow, but not in the direction of cross-flow. Bacterial community correlation distances of 6.1 m at the 0.76 m biofilter depth, and 10.7 m at the 1.52 m biofilter depth were calculated. No significant spatial structure in the denitrifying (nosZ …
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