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 36 for “"Hydrodynamic Modeling"”.
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Two-dimensional, Hydrodynamic Modeling of Electrothermal Plasma Discharges
… through interaction terms. The two-dimensional modeling capabilities made available in this new code represent a tool for the exploration and analysis of the physics involved in ET plasma discharges that has never before been available. Previous simulation models of ET plasma discharges have …
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Investigating Compound Flood Using Remote Sensing And Hydrodynamic Modeling
… alone, called compound flooding (CF). While hydrodynamic models remain central to flood modeling, recent studies have also implemented remote sensing for flood mapping. This study first develops a framework to investigate CF in a data-scarce, cloudy region and creates probabilistic flood …
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Hydrodynamic modeling of towed buoyant submarine antenna's in multidirectional seas
A finite difference computer model is developed to simulate the exposure statistics of a radio frequency buoyant antenna as it is towed in a three-dimensional random seaway. The model allows the user to prescribe antenna properties (length, diameter, density, etc.), sea conditions (significant wave …
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Hydrodynamic modeling of towed buoyant submarine antenna's in multidirectional seas
A finite difference computer model is developed to simulate the exposure statistics of a radio frequency buoyant antenna as it is towed in a three-dimensional random seaway. The model allows the user to prescribe antenna properties (length, diameter, density, etc.), sea conditions (significant wave …
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Remote sensing for geomorphic and hydrodynamic modeling and process understanding
… and important inputs and considerations for hydrodynamic modeling. Due to our anthropogenic dependency and interconnection with rivers, humans have developed technologies and methods to measure and estimate river discharge and fluvial geomorphic change through field techniques, hydrodynamic …
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Mixed convection and hydrodynamic modeling of flows in rod bundles
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 1984.
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Smoothed Particle Hydrodynamic Modeling of Solid State Additively Manufactured Aluminum Alloys
… a meshfree framework, such as smoothed particle hydrodynamics (SPH), which better handles large deformation processes. This work aims to create a meshfree framework, improve it, and utilize it to better understand AFS-D and provide predictive power to improve AFS-D processing.Firstly, a meshfree …
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Hydrodynamic modeling of towed buoyant submarine antenna's [sic] in multidirectional seas
A finite difference computer model is developed to simulate the exposure statistics of a radio frequency buoyant antenna as it is towed in a three-dimensional random seaway. The model allows the user to prescribe antenna properties (length, diameter, density, etc.), sea conditions (significant wave …
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UNDERSTANDING THE FLOW DYNAMICS OF THE PEARL RIVER, MS, THROUGH HYDRODYNAMIC MODELING
<p><strong>The Pearl River brings fresh water and nutrients into Lake Borgne regulating conditions for oyster growth in estuarine waters. However, there are no flow measurement stations installed on East Pearl or West Pearl either at the river outlets or after the upstream bifurcation of the Pearl. …
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Hydrodynamic Modeling for Autonomous Underwater Vehicles Using Computational and Semi-Empirical Methods
… is a need for the development of methods for hydrodynamic modeling. This thesis aims to determine the hydrodynamic parameters for the governing equations of motion for three autonomous underwater vehicles. This approach is two fold, using data obtained from computational flight tests and using …
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Evaluating the combined use of three-dimensional hydrodynamic modeling and polyethylene passive sampling in the Lower Duwamish Waterway
… can be coupled with a three dimensional (3D) hydrodynamic model of a given surface water body to identify where sources contributing to the measured concentration distribution are most likely located and what mass flux is required to produce the measured concentrations. This evaluation was …
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Computational Simulation of Coal Gasification in Fluidized Bed Reactors
… were conducted to identify a computational modeling strategy for the simulation of coal gasification in fluidized bed reactors. The efforts set forth by this work first involved the development of a validatable hydrodynamic modeling strategy for the simulation of sand and coal fluidization. …
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Urban flood mitigation through land-use adaptation : a socioecological perspective of Paraty
… expansion in the aggravation of floods through hydrodynamic modeling; and their sociopolitical dimensions, analyzing the decision-making processes relating to the use and appropriation of urban land, considering social, economic, and institutional factors that influence these decisions. The …
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Structural analysis and design of floating wind turbine systems
… and Platform Flow (LSPF) has created trusted hydrodynamic modeling software used to perform a Pareto Optimization which resulted in an optimized Floating Wind Turbine (FWT) design which is a Tension Leg Platform (TLP); hereto called MIT TLP-1. This thesis details the structural design aspects …
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Estimating Floodplain Vegetative Roughness using Drone-Based Laser Scanning and Structure from Motion Photogrammetry
… then utilized them in a two-dimensional (2D) hydrodynamic model (HEC-RAS). The calculated approach used plant characteristics to determine vegetative roughness, while the calibrated approaches involved adjusting roughness values until model outputs approached values of field data (e.g., …
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Improved Dynamic Modeling and Robust Control of Autonomous Underwater Vehicles
… dissertation, we seek to improve the dynamic modeling and control of autonomous underwater vehicles (AUVs). We address nonlinear hydrodynamic modeling, simplifying modeling assumptions, and robust control for AUVs. In the literature, various hydrodynamic models exist with varying model …
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The Effects of Basin Slope and Boundary Friction on the Character and Plunge Location of Hyperpycnal Flows Entering a Laterally Unbounded Basin
… river mouth domain using Delft-3D, a hydrodynamic modeling software. Three parameters viz. the bottom slope of the receiving basin, the bottom friction and the density difference between inflow and ambient liquid were varied to test their influence on the plume spread rate.
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Objectively identifying spatial variability in bankfull stage
… that produce this variability. Two-dimensional hydrodynamic modeling is employed to assess the effects of bankfull variability on inundation patterns. The results of this work demonstrate the considerable variability inherent in the study rivers at large and small scales. The presence of …
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Flow-Transport Modeling and Quantification
… on using three dimensional numerical models in modeling flow applications to predict the temporal and spatial changes of flow and sediment environments. The work performed in this research quantified the periodic nature of bed forms types and geometries along the Lower Mississippi river. …
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Use of Lidar Data to Investigate the Influence of Bottom Friction Coefficients for Storm Surge Modeling of Hurricane Michael in the Florida Panhandle
<p>Current storm surge modeling typically uses local land use land cover (LULC) maps coupled with lookup tables to parameterize surface roughness because the process is defensible and easily automated at the regional scale. However, this is not a truly accurate method since LULC data is generalized …
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