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A Comparative Study On The Application Of Intelligent Algorithms As The Solution Of Inverse Heat Conduction Problems, Dominic Allard
A Comparative Study On The Application Of Intelligent Algorithms As The Solution Of Inverse Heat Conduction Problems, Dominic Allard
Theses and Dissertations
A critical component necessary for the safety and survival of space vehicles are the thermal protection systems (TPS). Especially when subject to atmospheric re-entry, the heating loads subject to the space vehicle requires the implementation of extensive protection. The TPS commonly used currently are passive ablative materials which burn away under extreme heat flux. Due to the nature of the material and the incident heat flux, it is not feasible to attain accurate, real-time measurements for the boundary conditions with sensors placed on the surface of the space vehicle. The ability to do such would allow opportunities to implement active …
Coupling A Parametric Wave Model Into Hydrodynamic Ocean Circulation Forecasts To Improve Efficiency Of Nested Estuarine Storm Surge Predictions, Caleb Tye Lodge
Coupling A Parametric Wave Model Into Hydrodynamic Ocean Circulation Forecasts To Improve Efficiency Of Nested Estuarine Storm Surge Predictions, Caleb Tye Lodge
Theses and Dissertations
Efficiency in storm surge modeling is crucial for forecasting coastal hazards in real-time. While computation cost is trivial to organizations with ample resources, the robustness of forecasts generated by most parties are restricted by wall-clock time. The Parametric Wave Model (PARAM) was developed by Boyd and Weaver (2021) as an alternative to computationally expensive wind-wave models when modeling estuarine environments. For this study, PARAM has been tightly coupled with the ADCIRC hydrodynamic model to become ADCparam, then integrated into the Multistage ensemble forecast system, a one-way nesting framework for modeling waves and circulation in coastal estuaries developed by Taeb and …
Application Of Ensemble Methods For Solving Offshore Wind Farm Layout Optimization Problems, Puyi Yang
Application Of Ensemble Methods For Solving Offshore Wind Farm Layout Optimization Problems, Puyi Yang
Theses and Dissertations
Wind energy is considered as one of the most promising renewable energy sources. The intent of this dissertation is to assess the application of ensemble methods on offshore wind farm layout optimization. In this regard, four research questions are considered and addressed accordingly each of which are discussed in detail in a separate chapter (chapter 2 to 5). The first research question is focused on choosing appropriate analytical wake model to be used for the wind farm layout optimization (WFLO) problems in this dissertation. The WFLO problem is a complex and non-convex optimization problem. The accuracy of analytical wake models …
An Evolutionary Inspired Framework For Grasp Planning Automation On Sheet-Metal Parts With Multi-Type Grippers, Jicmat Andres Ali Tribaldos
An Evolutionary Inspired Framework For Grasp Planning Automation On Sheet-Metal Parts With Multi-Type Grippers, Jicmat Andres Ali Tribaldos
Theses and Dissertations
Industrial robot-mounted grippers are commonly used in the automotive industry to position, manipulate, and immobilize sheet-metal parts during several manufacturing and assembly operations. Nowadays, the use of grippers that use two or more different gripping principles such as magnets, suction cups, and fingers to accomplish the gripping task is common. Automation of the steps involved in the design of these multi-type grippers is essential to the timely introduction of new vehicles to the market. The main reason being that production of the vehicles cannot start before designing, testing, and building the grippers for its components, but the design of the …
A Machine Learning-Based Approach To Predict And Optimize The Performance Of Zero Energy Building (Zeb): A Case Study For Florida, Benjamin Kubwimana
A Machine Learning-Based Approach To Predict And Optimize The Performance Of Zero Energy Building (Zeb): A Case Study For Florida, Benjamin Kubwimana
Theses and Dissertations
Machine learning is currently one of the most searched fields aiming to solve real-life problems. Building simulation software tools help engineers estimate building energy behaviors before the actual construction, allowing implementation of more energy efficient choices in building design and construction. Current building energy simulation software tools are mostly physics-based and still lack the benefit obtained with machine learningbased modeling, which offers fast and less computationally expensive techniques to build energy models and efficiently perform design optimization. This thesis presents a machine learning-based approach for building energy modeling and optimizing design parameters to minimize building’s energy consumption. The study is …
Thermoelectric-Based Cooling Systems For Building Application: A Sustainable Solution, Seyedehmohadeseh Seyednezhad
Thermoelectric-Based Cooling Systems For Building Application: A Sustainable Solution, Seyedehmohadeseh Seyednezhad
Theses and Dissertations
In the United States, buildings account for a large share of the annual energy consumption, nearly 40%. Fossil fuels including coal, oil, and natural gas account for the main source of electric power generation and constitute the largest portion of the building energy consumption. Such a high level of fossil fuel consumption is a multifaceted challenge as demand for energy grows, and natural resources become scarce and expensive, while the climatic effects of massive energy use will be clearly felt by all. As a necessary component for occupants’ thermal comfort, cooling and air conditioning systems are among the largest energy …
Dynamic Modeling Of A Three Degree Of Freedom Reaction Sphere, Joshua Michael Byron
Dynamic Modeling Of A Three Degree Of Freedom Reaction Sphere, Joshua Michael Byron
Theses and Dissertations
This thesis presents a method to simulate the dynamics of a three degree of freedom, electromagnetically suspended Northrop Grumman Corporation Reaction Sphere (NGCRS) in MATLAB Simulink® by computing the magnetic force and torque relations offline, using COMSOL® Multiphysics. The goal of the thesis is firstly to demonstrate through Finite Element Magnetic Modeling (FEM) that magnetic field interactions between a stator levitation electromagnet (EM) and the rotor permanent magnets (PM) are limited to a single EM-PM pair and that all other PMs can be considered decoupled from the EM. Secondly, this thesis aims to demonstrate that a set of generalized magnetic …
Charged Particle Environment Testing Of A Deep Space Radiation Shield With Associated Fabrication And Calibration Of Pulsed Power Systems, Mark Bedford Moffett
Charged Particle Environment Testing Of A Deep Space Radiation Shield With Associated Fabrication And Calibration Of Pulsed Power Systems, Mark Bedford Moffett
Theses and Dissertations
Space radiation is one of the primary dangers faced outside of the protective magnetosphere of Earth. Despite the persistent radiation threat to self-contained human habitation and the risk of increased exposure during long-duration missions, reliable long-term radiation protection is not well-developed. Active shielding is an avenue of preventative radiation protection that could be deployed to protect astronauts and biological life from the effects of radiation. This dissertation explores the design scalability of an active magnetic shield for protecting against isotropic radiation in deep space. Each shield is composed of two concentric, elliptical layers of circular conducting coils, each arranged like …
Evolutionary Algorithms For Function Model Synthesis, Amaninder Singh Gill
Evolutionary Algorithms For Function Model Synthesis, Amaninder Singh Gill
Theses and Dissertations
Function modelling plays an essential role in the systematic design process. Designers are trained in the academia trained on function models, yet the acceptance of function models in the industry remains sparse. A possible reason is that there is a lack of computational support for synthesizing function models. The research presented in this dissertation aims to fill that gap. A conceptual proof of function model synthesis using a Genetic Algorithm (GA) is initially presented. Thereafter a priori rules to evaluate function model have been developed. These rules do not rely on a designer conveying designer intent to the algorithm, which …
Design And Analysis Of A Pipe And Pump System Constructed To Connect Port Canaveral To The Banana River, Nicole Ann Mcclain
Design And Analysis Of A Pipe And Pump System Constructed To Connect Port Canaveral To The Banana River, Nicole Ann Mcclain
Theses and Dissertations
The Indian River Lagoon (IRL) has hosted an extensive array of plants and animals throughout its lifetime, having one of the greatest species’ diversity of all North American estuaries. In addition to the variety of marine wildlife that is supported by the IRL, the system is also a recreational and economic resource for the counties bordering it. The biological integrity of the IRL, however, has shown evidence of decline in the last few decades, due to impaired water quality caused by pollution and disruptions to natural circulation patterns. If far-reaching changes are made to repair the water quality of the …
Enhanced Solar Receiver Design: Using Modern Materials And Manufacturing Methods, Paul John Kepinski
Enhanced Solar Receiver Design: Using Modern Materials And Manufacturing Methods, Paul John Kepinski
Theses and Dissertations
Solar receivers are a core component in receiver technology used for solar thermal power plants that use mirror reflectors to concentrate solar radiation onto a single point. This point is where the solar receiver is located. The energy is transferred into a medium that can either be stored for overnight power needs or can be used immediately to generate steam to power an electrical grid. The purpose of this research is to see if efficiency of a solar receiver can be increased substantially using newer methods of 3D metal manufacturing and material sciences. The recommended solution is a cavity shaped …
The Effects Of Noise On Parametrically Excited Systems With Nonlinear Damping, Donghao Li
The Effects Of Noise On Parametrically Excited Systems With Nonlinear Damping, Donghao Li
Theses and Dissertations
Parametric oscillators are a class of resonating systems in which a parameter, such as stiffness in a mechanical system or capacitance in an electrical system, is periodically modulated in order to alter the system response in a desired manner. A resonance effect occurs when the pump frequency is near twice of resonant frequency. Such systems are said to be “parametrically pumped,” and this pump can, above a certain amplitude threshold, destabilize the system in the absence of nonlinearities. Parametric resonance is widely observed in nature and has been employed in a large variety of engineered systems, most notably in micro-electro-mechanical …
Near-Shore Sediment Transport Under Cnoidal Waves Using Particle Image Velocimetry, Jenna Rose Katrina
Near-Shore Sediment Transport Under Cnoidal Waves Using Particle Image Velocimetry, Jenna Rose Katrina
Theses and Dissertations
With future trends showing a higher percentage of the human population living along the coast, coastal resilience is a significant topic of concern for many researchers. The purpose of this research was to analyze near-shore sediment transport under different wave parameters using the technique of Particle Image Velocimetry (PIV) and laboratory studies for linear and nonlinear cnoidal waves. At the deeper extent of the nearshore profile, waves will tend to be linear, having an Ursell number less than 40, with little or no net sediment transport due to orbital velocities. The velocities are the same under the crest and trough …
Flagellation Testing Of Composite Finger Skirts For Surface Effect Ship (Ses) Application, Natalie Marie Holliday
Flagellation Testing Of Composite Finger Skirts For Surface Effect Ship (Ses) Application, Natalie Marie Holliday
Theses and Dissertations
The objective of this research is to create flagellation data for SES finger skirts. The SES design allows it to have a high tonnage with low draft, little drag, low wavemaking resistance, remarkable carrying capacity, and incredible propulsive efficiency. A SES is a sidehull hovercraft, with air cavity sealing components at the bow and stern. The fingers at the bow collectively make up an elastic, flexible full sealing skirt, dissipating oncoming waves and allowing for the vessel to be self-stabilizing. The problem with SES vessels is that the bow finger skirts wear significantly over a short period of time (~ …
Inverse Methods For Near-Real Time Estimation Of Surface Heat Flux In Thermal Protection Systems For Space Vehicles, Obinna Oluchukwu Ugochukwu Uyanna
Inverse Methods For Near-Real Time Estimation Of Surface Heat Flux In Thermal Protection Systems For Space Vehicles, Obinna Oluchukwu Ugochukwu Uyanna
Theses and Dissertations
With the increased goal of manned explorations to outer space, safety during the atmospheric entry/reentry process is paramount as the incident heat fluxes on the surface of vehicle can reach critical values. Thermal Protection Systems (TPS) are therefore essential components in space vehicles as they ensure the safety and protection of the payload and cargo. In order to ensure improved active control capabilities and prolonged used of the vehicle, TPS surface conditions need to be known and determined. Since direct measurement of the surface heat flux using sensors is not feasible, one alternative involves the use of temperature sensors located …
The Effect Of Simulated Mangrove Forest Width On Shoreline Stabilization At Multiple Tidal Water Levels, James Edward Austin
The Effect Of Simulated Mangrove Forest Width On Shoreline Stabilization At Multiple Tidal Water Levels, James Edward Austin
Theses and Dissertations
Red mangrove (Rhizophora mangle) forests protect hundreds of miles of Florida’s shorelines from erosion and wave damage associated with severe storms and daily wave action. Shorelines are often protected from erosion with man-made structures such as seawalls, revetments, and breakwaters. However, these man-made structures disrupt natural ecosystems and cause scour and erosion in surrounding areas. The presence of mangroves not only prevents erosion but shelters marine life and filters water, promoting ecological health. Mangroves are now being implemented for wave energy reduction and shoreline stabilization, but there is little quantitative data about the precise sediment transport induced or prevented by …
Modeling And Energy Simulation Of A Zero Energy Building: A Case Study For Florida, Mariana Migliori Favaretto
Modeling And Energy Simulation Of A Zero Energy Building: A Case Study For Florida, Mariana Migliori Favaretto
Theses and Dissertations
The study of energy consumption in buildings is an important area of research given the large share of building sector in the worldwide energy usage. The energy consumption of buildings has a high impact on carbon emissions, a greenhouse gas which has proved to play a major role in global warming. In the last decades, global warming has become an increasing concern and worldwide high energy demand have awaken a pressing quest towards improving building energy efficiency. Reducing buildings’ energy usage by implementing energy efficiency measures is one way towards a sustainable future for any country in the world. This …
Multi-Degree Of Freedom Position And Attitude Control Of Rings Dipoles Using Electromagnetic Forces And Torques, David Andres Alvarez
Multi-Degree Of Freedom Position And Attitude Control Of Rings Dipoles Using Electromagnetic Forces And Torques, David Andres Alvarez
Theses and Dissertations
Satellite formation flight (SFF) is likely to transform and advance the scope of space missions in the near future. Some considerable benefits of SFF to a mission include robustness, adaptability, and potential cost savings. However, satellite formations face a fuel expenditure issue: the more spacecraft there are to control, the more fuel will be expended on alignment and maneuvering. A solution to this problem is Electromagnetic Formation Flight (EMFF), which is the application of conductive coils in producing electromagnetic fields that can interact with the fields of other coils in a formation to exchange forces and torques. With three orthogonal …