Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Other Chemical Engineering (5)
- Materials Science and Engineering (4)
- Other Materials Science and Engineering (3)
- Membrane Science (2)
- Polymer Science (2)
-
- Thermodynamics (2)
- Aerodynamics and Fluid Mechanics (1)
- Aerospace Engineering (1)
- Biochemical and Biomolecular Engineering (1)
- Ceramic Materials (1)
- Complex Fluids (1)
- Computer-Aided Engineering and Design (1)
- Fluid Dynamics (1)
- Mechanical Engineering (1)
- Physical Sciences and Mathematics (1)
- Physics (1)
- Polymer and Organic Materials (1)
- Structural Materials (1)
- Keyword
-
- Air Shear (1)
- Alkali Activated Fly Ash (1)
- Analysis of movement (1)
- Buoyancy (1)
- Buoyancy force (1)
-
- COMSOL (1)
- COVID-19 (1)
- Calcium Alginate (1)
- Chloride Diffusion in Cement (1)
- Composite materials (1)
- Compounding (1)
- Compressible gas (1)
- Contact Angle (1)
- Coronavirus (1)
- Corrosion (1)
- Corrosion of Concrete (1)
- Cylinder (1)
- Droplet Adherence (1)
- Electrochemistry (1)
- Electrospinning (1)
- Fiber mat (1)
- Filter (1)
- Filtration (1)
- Fluidized Bed (1)
- Form stable (1)
- Geopolymer Cement (1)
- Hindered Settling (1)
- Impressed Current (1)
- Installation (1)
- Laser interferometry (1)
Articles 1 - 11 of 11
Full-Text Articles in Transport Phenomena
Qualitative Analysis Of Surface Modification On Wiffleball Aerodynamics, Cole Lanni
Qualitative Analysis Of Surface Modification On Wiffleball Aerodynamics, Cole Lanni
Williams Honors College, Honors Research Projects
This project investigated how surface modifications to a Wiffleball affect its aerodynamic behavior, particularly its vertical and horizontal movement when thrown. The study tested the hypothesis that altering surface texture through cutting or sanding would influence airflow and pressure differentials, thereby changing the ball's movement. Six ball conditions: including unmodified, sanded, and various cut patterns were tested using a pitching machine in a controlled indoor environment. Each variation was pitched ten times, and movement was analyzed through measurements of contact points on posterboards and performing statistical testing, specifically ANOVA with Post Hoc analysis. Results indicated that surface modifications significantly increased …
Comsol Simulation Of Pipeline Corrosion With Cathodic Protection, Ethan Scalzo
Comsol Simulation Of Pipeline Corrosion With Cathodic Protection, Ethan Scalzo
Williams Honors College, Honors Research Projects
Cathodic protection (CP) is a widely used technique to mitigate corrosion in buried steel pipelines. This study uses COMSOL Multiphysics to model and analyze the performance of both sacrificial anode and impressed current systems in a simulated 3D environment. The model solves for pipeline potential, current density, and corrosion rate within a surrounding soil domain to assess protection coverage across the pipeline. Simulations were conducted to evaluate the influence of electrode and electrolyte properties on CP effectiveness. The study demonstrates that COMSOL Multiphysics is an effective tool for modeling CP systems, offering insights that align with established industry practices. While …
Testing The Effectiveness Of Various Fabrics For Use In Protective Face Coverings, Isaac Daley
Testing The Effectiveness Of Various Fabrics For Use In Protective Face Coverings, Isaac Daley
Williams Honors College, Honors Research Projects
Facemask requirements have been heavily implemented as a result of the COVID-19 pandemic. The purpose of this study was to test various fabrics that could be used in face coverings and determine which materials are best for reducing virus transmission rates. Of the seven fabrics tested, five were conventional home-use fabrics and the other two were surfaces modified with hydrophobic organosilanes. Wettability and droplet adherence tests were performed on each material. The materials that performed the best were decyltrichlorosilane (DTS) modified cotton, perfluorotrichlorosilane (FTS) modified cotton, and polyester. Contact angles for water droplets on these fabrics were 106°, 93°, and …
Simulation Of Water Loading In Filter Medium, Anthony Mole
Simulation Of Water Loading In Filter Medium, Anthony Mole
Williams Honors College, Honors Research Projects
This research will model fluid flow through a filter plugged with water droplets using FlexPDE software. After simulations are run at various initial conditions, curves will be developed to correlate the permeability of the filter to variables like water droplet distribution and size.
Relating Modified Ergun's Equation To Hindered Settling Correlations, Ryan Zahniser
Relating Modified Ergun's Equation To Hindered Settling Correlations, Ryan Zahniser
Williams Honors College, Honors Research Projects
Correlations were developed between the Modified Ergun’s and Hindered settling correlations under the condition of dense packing of particles in the bed. As the porosity of the slurry increases, so does the interference between particles in the solution which mimics the behavior of a packed or densely concentrated fluidized bed. The similarity between the two sets of conditions was modeled using mathematical equations to calculate settling velocities and pressure drops by means of the Hindered Settling correlations and Modified Ergun’s equation at porosities ranging from 0.4242 to 0.89. The results showed that a porosity of 0.52 and 0.009 ft particle …
The Effects And Motion Of An Air-Filled Cylinder Being Submerged In Water In The Axial Direction, Ethan Davis
The Effects And Motion Of An Air-Filled Cylinder Being Submerged In Water In The Axial Direction, Ethan Davis
Williams Honors College, Honors Research Projects
Submarines operate on the basis of a difference in relative densities between of vessel and the surrounding fluid. This principle is based on the force balance that exists between the total buoyancy force and the force due to gravity. Previous work focuses on the neutral buoyancy depths and velocities of object that once submerged, their buoyancy force is a constant along with the force due to gravity. This work aims to better understand how the compression of air at various depths below the surface of the water contribute to the neutral buoyancy depth, velocity of the object as it rises, …
A Comparison Of Fiber Mat Thickness Measurement Techniques Using Laser Interferometry And Water Displacement, Ryan Seabeck
A Comparison Of Fiber Mat Thickness Measurement Techniques Using Laser Interferometry And Water Displacement, Ryan Seabeck
Williams Honors College, Honors Research Projects
Polymer fiber mats may often be very thin which leads to complications in measuring thickness. The thickness of fiber mats, however, is crucial in understanding their behavior. Thickness affects how well the mat works as a filter as well as the pressure drop across the mat, and herein lies the need for accurate measurement techniques. Currently two of the available techniques for measuring mat thickness are by laser interferometry[1] and by buoyancy force when submerged in water[2]. Instead of measuring the buoyancy force in this experiment, an enclosure intended to measure the thickness via water displacement was …
Chloride Effect In Fly Ash Geopolymer Cement, Evan Dimmick
Chloride Effect In Fly Ash Geopolymer Cement, Evan Dimmick
Williams Honors College, Honors Research Projects
The production of ordinary portland cement (OPC) poses a significant impact on the world's carbon dioxide emissions through the wide global use of concrete. Geopolymer cements (GPC) made from alkali activated fly ash can serve as a replacement to OPCs, reducing the carbon dioxide emissions by as much as 80%. GPCs exhibit adequate or superior mechanical performance to OPCs. The corrosion of carbon steel rebar in concrete occurs largely from chloride ion attack. The focus of this project will be to experimentally determine the coefficient of diffusion for chloride ions in GPCs and OPCs and compare to the corrosion performance …
A Foundational Approach To Extrusion And Compounding, David Frankart
A Foundational Approach To Extrusion And Compounding, David Frankart
Williams Honors College, Honors Research Projects
With a history of nearly 200 years, polymer processing and compounding is constantly changing to fit the material science needs of the era. Exposure of undergraduate students to the technology and practices used in industry today in a lab setting would create new opportunities for experiential learning and growth. The objective was to set up a 0.75”, 25 L/D Thermo Haake single screw extruder for lab use and run trials of material in a single screw extruder to set up a basis for experiments. Trials were run of co-polyester resin through a single screw extruder with carbon fiber additives varying …
Form Stable Phase-Change Materials, Russell Dent, Marjan Kashfipour, Nitin Mehra, Jiahua Zhu
Form Stable Phase-Change Materials, Russell Dent, Marjan Kashfipour, Nitin Mehra, Jiahua Zhu
Williams Honors College, Honors Research Projects
This work investigates the use of two different polyols, xylitol (Xyl) and erythritol (Ery), in conjunction with boron nitride (BN) aerogels, for the purpose of creating thermally conductive composites. While the BN filler in Xyl composites achieved a high anisotropic thermal conductivity of up to 4.53 W/m-K at 18.2 weight percent filler loading, they do not exhibit good phase-change material qualities due to a low solidification enthalpy even at low cooling rates. Alternatively, the BN-Ery composites have shown promising results with a solidification enthalpy of 225.14 J/g and a melting enthalpy of 385.84 J/g at a heat rate of 5 …
Calcium Alginate Microbead Production Via An Air Assisted Shearing Process, Ryan Loftus
Calcium Alginate Microbead Production Via An Air Assisted Shearing Process, Ryan Loftus
Williams Honors College, Honors Research Projects
The purpose of this project was to model the size of calcium alginate microbeads produced by extruding a solution of 1.5 wt.% alginate from a syringe and needle with air shear generated from a pneumatic line flowing in an annular tube around the extrusion needle. The air shear would create microdroplets that would fall into a solution of 2 wt.% calcium chloride in water, crosslinking the droplets into beads. These microbeads can be used in drug dispersion applications or in encapsulation of cells throughout the body due to their biocompatibility. The goal was to create uniform beads that ranged from …