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Now showing items 6170-6189 of 9103
Numerical and experimental analysis of Wetumpka impact crater, Alabama.
(2021-07-19)
Impacts are the most crucial process in the formation of the solar system, since planets and other bodies are considered to have formed by accretion of small objects through collisional processes. By studying craters on ...
A Numerical and Experimental Study of Additively Manufactured Compact Cold Plates for Electronics Cooling Applications
(2021-12-03)
This research assesses the viability of metal Additive Manufacturing (AM) to create Compact Cold Plate Heat Exchangers. Unique arrays of offset strip fins were used to increase heat transfer and reduce pressure drop. Cold ...
Numerical approaches to investigate small bodies’ properties in their structure and surface with case studies
(2023-04-27)
Asteroids, comets, and Kuiper-belt objects (aka. Small bodies) can tell us essential information to understand their evolutionary history and advance the history of our solar system. Since the currently available data on ...
The Numerical Approximation of Blow-Up Times for Fractional Reaction-Diffusion Equations
(2022-07-28)
We investigate the numerical estimation of blow-up phenomena of the space fractional reaction-diffusion equation \[ \partial_t u +(-\Delta)^{\alpha/2}u=f(u), \quad x \in \Omega, t>0 \] with non-negative initial and Dirichlet ...
Numerical assement and evaluation of a stream monidification strategy to address sediment aggradation issues at Dean Road bridge in Dale County, Alabama
(2019-01-07)
Severe aggradation in bridge structures is a serious issue since it may lead to overtopping episodes during peak flows or increased risk of serious structural damage. Aggradation processes may be caused by changes in ...
Numerical Investigation of the Flow Topology in a Bidirectional Vortex Engine
(2023-03-30)
The characterization of swirl-driven phenomena, including cyclonic flows, continues to
receive attention in the propulsion community. This may be attributed to the beneficial
properties of swirl when integrated into ...
Numerical Investigation of the Solidification of Nanoparticle-Based Colloidal Suspensions
(2013-07-29)
In this dissertation, analytical and numerical approaches were used for analysis of the solidification process of nanoparticle-based colloidal suspensions, with a special emphasis to those used as nanostructured-enhanced ...
A Numerical Investigation on High-Reynolds-Number Gravity Currents in Pressurized and Free-Surface Systems using Shallow Water Equation and Integral Model Approaches
(2014-12-09)
Multiphase flows in the form of gravity currents are prevalent in various natural systems, as well as in some open channels and closed conduits. Thus, accurate flow simulation and efficient modeling tools are important in ...
Numerical Model Evaluations of Cumulative Contraction Scour at a Bridge Site with Cohesive Soils
(2005-08-15)
The objective of this study was to perform 2-Dimensional numerical contraction
scour calculations at an actual bridge site with cohesive soils. The 2-D model used in the
analysis was the Finite Element Surface Water ...
Numerical Modeling of Crustal Deformation and Pore-Pressure Changes Associated with the 1999 Chi-Chi Earthquake, Taiwan
(2010-12-09)
A new 3D time-dependent pore-pressure diffusion model PFLOW is used to investigate the response of pore fluids to the crustal deformation generated by strong earthquakes in heterogeneous geologic media. Using a carefully ...
Numerical Modeling of Electromagnetic Wave Scattering by Layered Random Surfaces
(2020-12-01)
We present an efficient numerical method for modeling the scattering of electromagnetic fields by a multiply layered medium with random interfaces. We propose a combination of the Monte Carlo-Transformed Field Expansion ...
Numerical Modeling of Liquefaction-induced Settlement due to Reconsolidation
(2021-07-30)
Soil liquefaction poses a major threat to human life and property. Settlement following liquefaction has been one of the major sources of liquefaction-induced damage in past earthquakes and creating resilient infrastructure ...
Numerical Modeling of Nasal Cavities and Air Flow Simulation
(2006-05-15)
Computational fluid dynamics (CFD) has many applications in biomedical engineering, such as simulating air dynamics in nasal cavities and lungs, blood flow in vessels, and blood flow in hearts. To perform CFD simulations, ...
Numerical Modeling of Random 2D and 3D Structural Foams Using Voronoi Diagrams: A Study of Cell Regularity and Compression Response
(2013-07-10)
Representing the complex morphology of cellular solids in general and metal foams in particular for understanding key factors governing their mechanical behavior is typically achieved using periodic unit cells. Due to the ...
Numerical modeling of rapidly varying flow conditions in collection systems
(2021-11-29)
The design, operation and maintenance of urban water infrastructure depends on the urban runoff flow characteristics. Many modeling tools are being applied for predicting the flow characteristics and their accuracy are ...
Numerical Modeling of Very Thin Dielectric Materials
(2008-08-15)
In this work, a Method of Moments (MoM) formulation is presented for the
numerical solution of very thin dielectric materials in the frequency domain. The
dielectric material is represented by a triangular mesh and a ...
Numerical simulation and mechanical properties of free-standing silver thin films
(2006-12-15)
Membrane deflection test is well studied to investigate the mechanical properties for polycrystalline metal thin films. Numerical simulations by ANSYS software of membranes with different bottom window sizes show the ...
Numerical Simulation Using Transition SST Model to Analyze Effects of Expanding Manifold Angle and Jet Spacing for Submerged Liquid Jet Impingement
(2018-07-23)
Increasing numbers of under-hood sensors and power electronics modules are becoming standard in both commercial and military vehicles. In order to function reliably, these technologies require a dedicated and dynamic cooling ...
Numerical Simulations of Boiling in Dielectric Fluid Immersion Cooling Scenarios of High Power Electronics
(2014-04-28)
As server technologies have progressed, the traditional methods of blade level cooling have become very costly. Up to this point, most server units have been cooled through forced air convection; a process that requires ...
Numerical Simulations of Conservation Laws in Random Heterogeneous Media
(2020-07-17)
Conservation laws play an important role in many areas of natural science. When we design numerical schemes for conservation laws, we usually assume that initial data and flux function (the rate of change of quantity of ...