Barrett, The Honors College Thesis/Creative Project Collection
Barrett, The Honors College at Arizona State University proudly showcases the work of undergraduate honors students by sharing this collection exclusively with the ASU community.
Barrett accepts high performing, academically engaged undergraduate students and works with them in collaboration with all of the other academic units at Arizona State University. All Barrett students complete a thesis or creative project which is an opportunity to explore an intellectual interest and produce an original piece of scholarly research. The thesis or creative project is supervised and defended in front of a faculty committee. Students are able to engage with professors who are nationally recognized in their fields and committed to working with honors students. Completing a Barrett thesis or creative project is an opportunity for undergraduate honors students to contribute to the ASU academic community in a meaningful way.
Displaying 1 - 10 of 48
Description
An in-depth analysis on the effects vortex generators cause to the boundary layer separation that occurs when an internal flow passes through a diffuser is presented. By understanding the effects vortex generators demonstrate on the boundary layer, they can be utilized to improve the performance and efficiencies of diffusers and other internal flow applications. An experiment was constructed to acquire physical data that could assess the change in performance of the diffusers once vortex generators were applied. The experiment consisted of pushing air through rectangular diffusers with half angles of 10, 20, and 30 degrees. A velocity distribution model was created for each diffuser without the application of vortex generators before modeling the velocity distribution with the application of vortex generators. This allowed the two results to be directly compared to one another and the improvements to be quantified. This was completed by using the velocity distribution model to find the partial mass flow rate through the outer portion of the diffuser's cross-sectional area. The analysis concluded that the vortex generators noticeably increased the performance of the diffusers. This was best seen in the performance of the 30-degree diffuser. Initially the diffuser experienced airflow velocities near zero towards the edges. This led to 0.18% of the mass flow rate occurring in the outer one-fourth portion of the cross-sectional area. With the application of vortex generators, this percentage increased to 5.7%. The 20-degree diffuser improved from 2.5% to 7.9% of the total mass flow rate in the outer portion and the 10-degree diffuser improved from 11.9% to 19.2%. These results demonstrate an increase in performance by the addition of vortex generators while allowing the possibility for further investigation on improvement through the design and configuration of these vortex generators.
ContributorsSanchez, Zachary Daniel (Author) / Takahashi, Timothy (Thesis director) / Herrmann, Marcus (Committee member) / Mechanical and Aerospace Engineering Program (Contributor) / W.P. Carey School of Business (Contributor) / Barrett, The Honors College (Contributor)
Created2018-05
Description
This experiment used hotwire anemometry to examine the von Kármán vortex street and how different surface conditions affect the wake profile of circular airfoils, or bluff bodies. Specifically, this experiment investigated how the various surface conditions affected the shedding frequency and Strouhal Number of the vortex street as Reynolds Number is increased. The cylinders tested varied diameter, surface finish, and wire wrapping. Larger diameters corresponded with lower shedding frequencies, rougher surfaces decreased Strouhal Number, and the addition of thick wires to the surface of the cylinder completely disrupted the vortex shedding to the point where there was almost no dominant shedding frequency. For the smallest diameter cylinder tested, secondary dominant frequencies were observed, suggesting harmonics.
ContributorsCoote, Peter John (Author) / Takahashi, Timothy (Thesis director) / White, Daniel (Committee member) / Mechanical and Aerospace Engineering Program (Contributor) / Barrett, The Honors College (Contributor)
Created2017-05
Description
The purpose of this paper is to discover what geometric characteristics of a wing and airfoil help to maximize leading edge suction through experimental testing. Three different stages of testing were conducted: a Proof of Concept, a Primary Experiment, and a Secondary Experiment. The Proof of Concept shows the effects of leading edge suction and the benefits it can posses. The Primary Experiment provided inconclusive data due to inaccuracies in the equipment. As a result, the Secondary Experiment was conducted in order to reduce the error effect as much as possible on the data. Unfortunately the Secondary Experiment provided inaccurate data as well. However, this paper does provide enough evidence to begin to question some of the long held beliefs regarding theoretical induced drag and whether it is true under all circumstances, or if it is only a good approximation for airfoils with full leading-edge suction effects.
ContributorsMorrow, Martin (Author) / Takahashi, Timothy (Thesis director) / Middleton, James (Committee member) / School for the Engineering of Matter, Transport, and Energy (Contributor) / Barrett, The Honors College (Contributor)
Created2017-05
Description
Between 1100-1500 A.D. England was defining its political and economic power in Europe and as a country. The social expectations of women were based on the general beliefs of femininity that stemmed from physiological characteristics and the religious demands of the church. Three women of considerable social and political power changed the dynamics of English monarchy and the position of women in power for the rest of history. Empress Matilda, Eleanor of Aquitaine, and Margaret Beaufort each defined their positions at the time, changing the pre-conceived notions of femininity by acting in what their contemporaries deemed a masculine way. Matilda, Eleanor, and Margaret did not only thrive in their positions of power under the stereotypes developed in the medieval era regarding femininity, but also in the study of their histories they bring to light how women in modern social and political positions of power are still faced with the same medieval notions of femininity. Women today face the same stereotypes and cultural expectations regarding femininity and when those expectations are not met, or when the stereotype is breached, a wave of popular rhetoric in the form of slander and criticism towards them is accepted. Today, modern women criticized in their positions of authority face the difficulty of riding the fence between being perceived as feminine or masculine. The journey of a heroine involves the integration of both masculine and feminine.
ContributorsAnderson, Alexandra Jael (Author) / Facinelli, Diane (Thesis director) / Wheeler, Jacqueline (Committee member) / Barrett, The Honors College (Contributor) / Department of English (Contributor)
Created2014-05
Description
A model has been developed to modify Euler-Bernoulli beam theory for wooden beams, using visible properties of wood knot-defects. Treating knots in a beam as a system of two ellipses that change the local bending stiffness has been shown to improve the fit of a theoretical beam displacement function to edge-line deflection data extracted from digital imagery of experimentally loaded beams. In addition, an Ellipse Logistic Model (ELM) has been proposed, using L1-regularized logistic regression, to predict the impact of a knot on the displacement of a beam. By classifying a knot as severely positive or negative, vs. mildly positive or negative, ELM can classify knots that lead to large changes to beam deflection, while not over-emphasizing knots that may not be a problem. Using ELM with a regression-fit Young's Modulus on three-point bending of Douglass Fir, it is possible estimate the effects a knot will have on the shape of the resulting displacement curve.
ContributorsSexton, Thurston Bryant (Author) / Takahashi, Timothy (Thesis director) / Jones, Donald (Committee member) / Barrett, The Honors College (Contributor) / Mechanical and Aerospace Engineering Program (Contributor) / School of Mathematical and Statistical Sciences (Contributor) / School of Human Evolution and Social Change (Contributor)
Created2015-05
Description
Executive Summary Finding Joy in the Journey is a sports philanthropy project I have designed to connect the Arizona State University Women's Basketball team with girls between the ages of 7-12 in the Phoenix community who have the same love for the game basketball. Through monthly team bonding events over a nine-month season, these young girls are able to build long lasting relationships with their role models and learn how to find the joy in the journey. Finding joy in the journey is key in our fast paced and on the go American lifestyle. The successes and bumps in the road, the good times and the bad, and the people along the way all contribute to help shape us into the people we are today. This program allows for 14 girls to have a scholarship to be on the Jr. ASU women's basketball team. The approximate budget for this project is $3000 per year and covers expenses for food and supplies at monthly team events as well as each of the girls to have season tickets for the ASU women's basketball home games. Funding is provided through boosters and fundraising efforts on the front end. Marketing efforts are made through the ASU Women's Basketball team's partnership with local elementary and middle schools through the character code game, and also through the database of the girls who attend basketball camp. Through a shared love of the game of basketball, ASU Women's Basketball is raising up a young generation of girls to be leaders by inspiring and teaching them all of the lessons the game of basketball can teach us about life.
ContributorsBurke, Joy (Author) / Facinelli, Diane (Thesis director) / Ostrom, Amy (Committee member) / Barrett, The Honors College (Contributor)
Created2013-05
Description
The thesis is an investigation on current regulations of commercial aircraft landing and take-off procedures and an analysis of potential weaknesses within the regulatory system for commercial aerospace. To determine such flaws, an area of worse-case scenarios with regard to the aforementioned flight operations was researched. The events selected to best-depict these scenarios where incidents of aircraft overrunning the runway, referred to as runway excursions. A case-study conducted of 44 federal investigations of runway excursions produced data indicating four influential factors within these incidents: weather, pilot error, instrument malfunction, and runway condition. Upon examination, all but pilot error appeared to have federal enforcement to diminish the occurrence of future incidents. This is a direct result of the broad possibilities that make up this factor. The study then searched for a consistent fault within the incidents with the results indicating an indirect relationship of thrust reversers, a technique utilized by pilots to provide additional braking, to these excursions. In cases of thrust reverser failure, pilots' over-reliance on the system lead to time being lost from the confusion produced by the malfunction, ultimately resulting in several different runway excursions. The legal implication with the situation is that current regulations are ambiguous on the subject of thrust reversers and thus do not properly model the usage of the technique. Thus, to observe the scope of danger this ambiguity presents to the industry, the relationship of the technique to commercial aerospace needed to be determined. Interviews were set-up with former commercial pilots to gather data related to the flight crew perspective. This data indicated that thrust reversers were actively utilized by pilots within the industry for landing operations. The problem with the current regulations was revealed that the lack of details on thrust reverser reflected a failure of regulations to model current industry flight operations. To improve safety within the industry, new data related to thrust reverser deployment must be developed and enforced to determine appropriate windows to utilize the technique, thus decreasing time lost in confusion that results from thrust reversers malfunction. Future work would be based on producing simulations to determine said data as well as proposing the policy suggestions produced by this thesis.
ContributorsCreighton, Andrew John (Author) / Takahashi, Timothy (Thesis director) / Marchant, Gary (Committee member) / Kimberly, Jimmy (Committee member) / Barrett, The Honors College (Contributor) / Mechanical and Aerospace Engineering Program (Contributor) / School of Mathematical and Statistical Sciences (Contributor) / School of Politics and Global Studies (Contributor)
Created2014-05
DescriptionThis collection of personal essays offers a glimpse into the experience of studying abroad, moving around within the United States for residence and travel, and the changes of heart and mind that accompany such travels. Provisions have been made for the graphic design, publication and promotion of the physical book.
ContributorsStrauss, Cassandra Lynell Frantz (Author) / Facinelli, Diane (Thesis director) / Dodge, Nancie (Committee member) / Barrett, The Honors College (Contributor) / Walter Cronkite School of Journalism and Mass Communication (Contributor) / School of Politics and Global Studies (Contributor)
Created2014-05
DescriptionAn analysis and informal ethnography of the participatory culture in Phoenix, Arizona that identifies itself as "geeky" or "nerdy." Conducted through numerous interviews and academic research, the project looks at this active community under the scope of personal choice and togetherness.
ContributorsHuskinson, Harmony (Author) / Facinelli, Diane (Thesis director) / Scott, Suzanne (Committee member) / Barrett, The Honors College (Contributor) / Walter Cronkite School of Journalism and Mass Communication (Contributor)
Created2014-05
DescriptionA short, fantasy novel using essential characters, themes, and events as depicted in the Bible.
ContributorsMcDonald, Joshua Dave Mallrich (Author) / Facinelli, Diane (Thesis director) / Bruhn, Karen (Committee member) / Barrett, The Honors College (Contributor) / Department of Chemistry and Biochemistry (Contributor) / School of Mathematical and Statistical Sciences (Contributor)
Created2014-05