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Skip to Search Results- 1Atrin Tavakoli
- 1Boddez, Jason Bradley
- 1Braun, Bennett L.
- 1Fathimani, Maryam
- 1Graves, Brian M
- 1Jeong, Moon Sook
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Applications of nonautonomous infinite-dimensional systems control theory for parabolic PDEs
DownloadFall 2013
Parabolic partial differential equations (PDEs) are used as models of transport-reaction phenomena in a variety of different industrial chemical and materials engineering processes, and can yield precise descriptions of process variables with complex temporal and spatially dependent system...
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Characterization and Control of Cyclic Variability in a Gasoline/Natural Gas Dual-Injection Spark Ignition Engine
DownloadSpring 2016
Reducing the cyclic variability of a gasoline/natural gas dual injection spark ignition engine using minimum variance control is the subject of this thesis. Cylinder pressure is used to calculate four combustion metrics, the standard deviation of which is used as an indicator of cyclic...
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Characterization of Particulate Matter Morphology and Volatility for Two Direct-Injection Engines
DownloadFall 2015
Particulate matter emitted from two direct injection engines has been characterized by morphology, volatility, mass-mobility exponent, effective density, and size distribution using tandem measurements from a centrifugal particle mass analyzer (CPMA) and differential mobility analyzers (DMA). The...
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Economic and Environmental Assessment of Large-scale Electro-chemical and Flywheel Energy Storage Systems for Stationary Applications
DownloadFall 2022
There are few cost and environmental feasibility assessments of energy storage systems for utility-scale applications. The development of techno-economic and environmental performance indicators is crucial to make an informed decision on future development and deployment of energy storage...
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Spring 2011
Homogeneous Charge Compression Ignition (HCCI) operation is desirable for its high thermal efficiency and low emissions of NOx and particulates. Difficulty with cold starting and maximum achievable speed/load highlight the desire for mode-switching to traditional spark ignition (SI)...
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Spring 2024
Hydrogen as a fuel has the potential to reduce tailpipe carbon dioxide emissions of vehicles to near-zero, while also allowing for the generation of a hydrogen-based economy and lowering humanity's dependence upon oil. Hydrogen-diesel dual fuel combustion, where hydrogen and diesel are combusted...
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Fall 2018
Dual-fuel Reactivity Controlled Compression Ignition (RCCI) combustion is investigated as an efficient combustion mode on a modified 4-cylinder production Gasoline Direct Injection (GDI) engine. RCCI uses Low-Temperature Combustion (LTC) to provide high efficiency combustion while avoiding NOx...
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Spring 2016
A dual-fuel system is used to control HCCI combustion timing and load in a CFR engine. The systems steady-state response to iso-octane and n-heptane injected energy is investigated then a dynamic ARMAX model is found using system identification. This model is used to design a norm-optimal...
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Lithium Recovery from Hydraulic Fracturing Flowback and Produced Water using a Manganese-Based Sorbent
DownloadFall 2020
Increased demand for lithium products for use in lithium ion batteries has led to a search for new lithium resources in recent years in order to meet projected future consumption. One such potential lithium resource is low lithium bearing brines that are discharged from hydraulically fractured...
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Localization of Global Discourse and the Breakdown of the Washington Consensus (WC): A Case Study of Korean Higher Education Reform (1993-2012)
DownloadFall 2015
In my dissertation paper, I sought the political implications of neo-liberal education reform with the case of recent Korean higher education reforms. I first explored the macro-causal relationship of neo-liberal higher education reform in transnational social relations, and then the political...