Bulletin of the American Physical Society
67th Annual Meeting of the APS Division of Fluid Dynamics
Volume 59, Number 20
Sunday–Tuesday, November 23–25, 2014; San Francisco, California
Session E7: Fluids Education I |
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Chair: Aline Cotel, University of Michigan Room: 3012 |
Sunday, November 23, 2014 4:45PM - 4:58PM |
E7.00001: Lost in Fathoms Ana\"is Tondeur, Jean-Marc Chomaz In 2012, at the very point where two continents collided, the island of Nuuk disappeared without trace. At the same time, in Brisbane, the 34$^{\rm th}$ International Geological Congress advanced a new era--the Anthropocene: an age where mankind has become a global telluric force. Was the disappearance of Nuuk island a one-off or a direct consequence of the emergence of the Anthropocene? This project was developed during a year of research as an artist-in-residence at LadHyX and has evolved from an expedition of the emergent part of the Mid-Atlantic ridge and the region of deep oceanic water dive. This talk will present {\it Lost In fathoms} a narratives composed of installations, drawings and photographs by the means of which we investigate the causes involved in the disappearance of Nuuk island. It challenges the perception of oceanic and geologic time scales and human's impact on the environment. This project is exhibited from October 16$^{\rm th}$ to November 29$^{\rm th}$ 2014, at GV Art Gallery in London, a contemporary art gallery devoted to art and science shows. [Preview Abstract] |
Sunday, November 23, 2014 4:58PM - 5:11PM |
E7.00002: Measuring Visual Expertise in Fluid Dynamics Jean Hertzberg, Tim Curran, Katherine Goodman What role does visual expertise play in the learning of abstract physics? In surveys for the Flow Visualization course at the University of Colorado, Boulder, students often commented positively about a new awareness of fluid dynamics in everyday life. Could this new awareness, termed visual expertise, be measured in some way? Working with research psychologists at CU Boulder, who had already been working in this area on projects such as face recognition, a study was developed. This study had subjects with no prior fluid dynamics expertise classify flow images as either turbulent or laminar. The first group was given \textit{error-driven learning}; that is, they had to guess the correct category for each image, were given feedback as to whether they had guessed correctly, and after a period of training, were tested on both the training images and a set of similar but new images. A second group was given simple instruction for the training images; that is, they were shown the image along with the name of the correct category, before being tested on both training images and new images. Preliminary results of the pilot study are presented, along with next steps. [Preview Abstract] |
Sunday, November 23, 2014 5:11PM - 5:24PM |
E7.00003: A tale of two slinkies: learning about scientific models in a student-driven classroom Punit Gandhi, Calvin Berggren, Jesse Livezey, Ryan Olf We describe a set of conceptual activities and hands-on experiments based around understanding the dynamics of a slinky that is hung vertically and released from rest. The motion, or lack thereof, of the bottom of the slinky after the top is dropped sparks students' curiosity by challenging their expectations and provides context for learning about scientific model building. This curriculum helps students learn about the model building process by giving them an opportunity to enlist their collective intellectual and creative resources to develop and explore two different physical models of the falling slinky system. By engaging with two complementary models, students not only have the opportunity to understand an intriguing phenomenon from multiple perspectives, but also learn deeper lessons about the nature of scientific understanding, the role of physical models, and the experience of doing science. The activities we present were part of a curriculum developed for a week-long summer program for incoming freshmen as a part of the Compass Project at UC Berkeley, but could easily be implemented in a wide range of classrooms at the high school or introductory college level. [Preview Abstract] |
Sunday, November 23, 2014 5:24PM - 5:37PM |
E7.00004: Transparent 2-D converging-diverging nozzle for gas dynamics instruction Dell Olmstead, Jon Vigil, Greg Naranjo, C. Randall Truman A nozzle lab was created to combine qualitative and quantitative instruction of supersonic converging-diverging nozzle operation and design. The lab uses readily-available compressed nitrogen flowing through a 6.5mm square throat to produce exit Mach numbers up to 2.9. Several nozzles of different area ratio with transparent sidewalls can be quickly interchanged. Measured thrust, plenum pressure, plenum temperature, and exit pressure are displayed real-time and may be overlaid with data from other nozzle contours. Additionally, a Schlieren imaging system was used to observe shockwaves inside the nozzle and near its exit as plenum pressure was increased. Deviation between design and measured variables is around 3\%. The correlation of Schlieren images of the exhaust with data from several different nozzles operated over the same total pressure range helps students understand not only how converging-diverging nozzles operate, but why they are used in some, but not all, propulsion applications. [Preview Abstract] |
Sunday, November 23, 2014 5:37PM - 5:50PM |
E7.00005: Bird Flight as a Model for a Course in Unsteady Aerodynamics Jamey Jacob, Jonathan Mitchell, Michael Puopolo Traditional unsteady aerodynamics courses at the graduate level focus on theoretical formulations of oscillating airfoil behavior. Aerodynamics students with a vision for understanding bird-flight and small unmanned aircraft dynamics desire to move beyond traditional flow models towards new and creative ways of appreciating the motion of agile flight systems. High-speed videos are used to record kinematics of bird flight, particularly barred owls and red-shouldered hawks during perching maneuvers, and compared with model aircraft performing similar maneuvers. Development of a perching glider and associated control laws to model the dynamics are used as a class project. Observations are used to determine what different species and sizes of birds share in their methods to approach a perch under similar conditions. Using fundamental flight dynamics, simplified models capable of predicting position, attitude, and velocity of the flier are developed and compared with the observations. By comparing the measured data from the videos and predicted and measured motions from the glider models, it is hoped that the students gain a better understanding of the complexity of unsteady aerodynamics and aeronautics and an appreciation for the beauty of avian flight. [Preview Abstract] |
Sunday, November 23, 2014 5:50PM - 6:03PM |
E7.00006: Towards a global virtual community of female engineering students and professionals Aline Cotel, Sara Rimer, Sahithya Reddivari ct- The need for strategies to empower Liberian women is exemplified in the recent study carried out by ActionAid International, which examined the state of Liberian undergraduate women in urban areas. The results show that these women often face sexual intimidation by faculty and instructors, women are often excluded from student organizations, there exists a lack of institutional support for female organizations at the universities, and that the women do not feel safe in the university due to low security standards. The situation is even direr for the female engineering students with less than 5{\%} of the engineering student population being women, therefore they are quite isolated in their engineering studies with minimal role models and professional support as they persist. We have planned a leadership camp for female Liberian engineering undergraduate women. The ultimate goal is to empower the Liberian women engineers with the skills, support and inspiration necessary to becoming successful engineering professionals. The leadership camp is planned and facilitated collaboratively by the members of the University of Michigan Society of Women Engineers (UM-SWE) student chapter and the Liberia Society of Women Engineers (L-SWE) student organization. The 2 week-long leadership camp has a workshop-based format with two themes: (i) academic and professional skills, and (ii) student organization development. [Preview Abstract] |
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