Physics URC Student Scholarship
Recent Submissions
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The Fluid Velocity and its Reversal in Simulated Turbulent Rayleigh-B?nard Systems
(2011-01-01)The velocity and reorientations of the large-scale circulation (LSC) in Rayleigh-B?nard convection (RBC) at the Rayleigh numbers R=1 x 10<sup>6</sup> < Ra < 5 x 10<sup>7</sup> and Prandtl number P=0.021 (mercury) ... -
An Analysis of the Effect of Rectangular Geometries on the Large-scale Circulation in Turbulent Rayleigh-B?nard Convection
(2011-01-01)In this research we have explored the behavior of Rayleigh-B?nard convection in a rectangular enclosed cell whose length is twice as big as its depth. In Rayleigh-B?nard convection, a fluid-filled cell is heated from the ... -
Automated Data Acquisition on Superconducting Wires using LabVIEW
(2006-01-01)One of the most important characteristics for superconductor application is critical current. Precise measurement of critical current is complicated by its dependence on temperature and applied magnetic field and also by ... -
Viscous and Thermal Boundary Layers in Simulated Turbulent Rayleigh-Benard Convection
(2010-01-01)Rayleigh-B?nard convection in cylindrical cells was examined in order to gather pertinent data regarding the thicknesses of viscous and thermal boundary layers and how they vary with the Rayleigh number. The effects of ... -
Sonoluminescence: a Star in a Jar.
(1999-01-01)Sonoluminescence is a process of turning sound into light. When a single air bubble suspended in water is driven by an appropriate acoustic signal, it emits short flashes of light.These flashes are only picoseconds long ... -
The Fluid Velocity and its Reorientation in Simulated Turbulent Rayleigh-Benard Convection
(2012-07-01)The velocity and reorientation of the large-scale circulation (LSC) in Rayleigh-Benard convection (RBC) at the Rayleigh numbers R = 1x107 < Ra <1 x108 and Prandtl numbers P=0.021 (mercury), 0.4, and 0.7 (air) are studied. ... -
The Effect of Surface Treatment on Rising Air Bubbles in a Hele-Shaw Cell
(2003-01-01)My summer research focused on the two-dimensional fluid dynamics problem of a single air bubble traveling through a viscous fluid between two parallel plates, separated by a uniform spacing, namely a Hele-Shaw cell. Several ... -
Developing a 3-D Imaging Systemto Trace the Path of a Rising Bubble
(2002-01-01)A single CCD camera conventionally provides a 2-D image of a moving particle. Studying rising bubbles in fluids, however, necessitates a 3-D imaging system in order to extract information such as velocity and path of the ... -
Studying the Shape and Path of Air Bubbles Rising in Clean Water.
(2001-01-01)This study looks at the shape and path of air bubbles (diameter 0.1 ? 0.2 cm) rising in clean water. In previous experiments [1], bubbles were generated using capillary tubes of different sizes; the bubble shapes were ... -
Solution of Laplace's Equation for a high end potential with a biased center wire in a Malmberg-Penning trap
(2012-07-01)After several experiments in a Malmberg-Penning plasma trap, a potential barrier or “hill” seemed present within the machine. The trap employs cylindrical geometry with an axial center wire. Laplace’s equation is solved ... -
Dispersion of Ions in the Drift Dark Matter Detector
(2012-07-01)This summer I worked on measuring the drift velocity and dispersion of ions in a miniature version of the DRIFT (Directional Recoil Identification from Tracks) detector. To do so I focused a flash lamp on a thin aluminum ... -
Path Instabilities of Clean and Surfactant Coated Bubbles Rising in Water
(2002-01-01)My experiment examined the shape and path of air bubbles (diameter range .1cm -.3cm) rising through water. Comparing the shape and trajectories of clean bubbles to those of bubbles generated using water contaminated with ... -
Fun with Fluid Columns. Erin Englert & Nate Villaume
(2001-01-01)The boundary between two unmixable fluids is often unstable. In the columnar geometry of our two experiments, a viscous jet and a phase-rich polymer column, this instability results in pinching off -- the column beads off ... -
Dynamics of Penta-Hepta Defect in a Hexagonal Pattern
(1999-01-01)The spatial and temporal dynamics of penta-hepta defects (PHD) and line defects in hexagonal patterns are studied. The hexagonal pattern is formed by a layer of soap bubbles (~1 mm in diameter) floating on a glass plate. ... -
The Effects of Bubble Generation Method on Bubble Dynamics
(2000-01-01)Different bubble generation methods are studied to determine their effect upon the shape and path of a bubble. To do this, we study the shape and velocity of air bubbles rising in distilled water. This research focused on ... -
Assisting with hardware R&D for the DRIFT Dark Matter Detection Project
(2012-07-01)After learning how to use the DipTrace circuit board design program, I was able to assist with three projects which were part of the effort to commission a new DRIFT detector. First, I have produced diagrams for boards ... -
The Effects of Aspect Ratio on Onset Pattern Formation in Simulated Rayleigh-Benard Convection
(2012-07-01)This talk will discuss onset patterns in Rayleigh-Benard Convection. Rayleigh-Benard Convection refers to a fluid-filled cell which is heated from the bottom and cooled at the top. At a large enough temperature difference ... -
Simulation and analysis of regular and chaotic particle dynamics in asymmetry-induced transport
(2012-07-01)Asymmetry-induced transport of a non-neutral plasma within a coaxial Malmberg-Penning trap is analyzed using a single-particle simulation with collisional effects. Simulations of the case with standing wave asymmetry and ... -
Magnetization Measurements to 60T of UBel3 and PRBel3
(1998-01-01)The peculiar properties of heavy fermion compounds at low temperatures combined with the lack of a comprehensive theory to consistently describe those properties have made the heavy fermions the subject of much study over ...
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