Bulletin of the American Physical Society
61st Annual Meeting of the APS Division of Fluid Dynamics
Volume 53, Number 15
Sunday–Tuesday, November 23–25, 2008; San Antonio, Texas
Session AW: Mini-Symposium: Videos and Multimedias for Fluids Instruction |
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Chair: Jean Hertzberg, University of Colorado Room: 004 |
Sunday, November 23, 2008 8:00AM - 8:26AM |
AW.00001: Videos and images from 25 years of teaching compressible flow Invited Speaker: Compressible flow is a very visual topic due to refractive optical flow visualization and the public fascination with high-speed flight. Films, video clips, and many images are available to convey this in the classroom. An overview of this material is given and selected examples are shown, drawn from educational films, the movies, television, etc., and accumulated over 25 years of teaching basic and advanced compressible-flow courses. The impact of copyright protection and the doctrine of fair use is also discussed. [Preview Abstract] |
Sunday, November 23, 2008 8:26AM - 8:52AM |
AW.00002: eFluids Video Gallery: a ``YouTube'' for Fluid Mechanics Invited Speaker: The research and educational value of videos of fluid mechanical phenomena cannot be overstated, yet there are literally hundreds of videos that, while posted on various websites, can be difficult to find. eFluids.com has launched a new video gallery website highlighting all aspects of fluid mechanics that will hopefully serve as a repository for this material. The gallery receives submissions using a user-friendly interface modeled on the popular YouTube site. Submissions can be in any format and any size up 50MB and up to 5 minutes long. The galleries are searchable and are classified in 23 categories, including subject-specific categories such as ``Laminar Flow,'' ``Turbulence,'' ``Vortices,'' ``Biological Flows,'' etc., as well as ``Recent Postings'' and links to fluids videos on other sites such as YouTube. The Video Gallery is integrated with the other Galleries on eFluids, including the long-established Gallery of Images, Gallery of Experiments, and Gallery of Problems. The presentation will show examples, demonstrate the submission interface, and the integration with the other galleries. In collaboration with George Homsy and Gordon McCreigh, www.eFluids.com. [Preview Abstract] |
Sunday, November 23, 2008 8:52AM - 9:18AM |
AW.00003: Interactive multimedia demonstrations for teaching fluid dynamics Invited Speaker: We present a number of multimedia tools, developed by undergraduates, for teaching concepts from introductory fluid mechanics. Short movies are presented, illustrating concepts such as hydrostatic pressure, the no-slip condition, boundary layers, and surface tension. In addition, we present a number of interactive demonstrations, which allow the user to interact with a simple model of a given concept via a web browser, and compare with experimental data. In collaboration with Mack Pasqual and Lindsey Brown, Princeton University. [Preview Abstract] |
Sunday, November 23, 2008 9:18AM - 9:44AM |
AW.00004: Fluidica CFD software for fluids instruction Invited Speaker: {\it Fluidica} is an open-source freely available {\it Matlab} graphical user interface (GUI) to to an immersed-boundary Navier- Stokes solver. The algorithm is programmed in Fortran and compiled into Matlab as mex-function. The user can create external flows about arbitrarily complex bodies and collections of free vortices. The code runs fast enough for complex 2D flows to be computed and visualized in real-time on the screen. This facilitates its use in homework and in the classroom for demonstrations of various potential-flow and viscous flow phenomena. The GUI has been written with the goal of allowing the student to learn how to use the software as she goes along. The user can select which quantities are viewed on the screen, including contours of various scalars, velocity vectors, streamlines, particle trajectories, streaklines, and finite-time Lyapunov exponents. In this talk, we demonstrate the software in the context of worked classroom examples demonstrating lift and drag, starting vortices, separation, and vortex dynamics. [Preview Abstract] |
Sunday, November 23, 2008 9:44AM - 10:10AM |
AW.00005: Teaching through Simple Experiments Invited Speaker: Our main goal in this proposed talk is to start a discussion among faculty around the power of simple in-class experiments to teach fundamental fluid mechanics. Many introductory fluid mechanics classes are highly theoretical and mathematical, with students becoming experts in applying mathematical recipes without truly understanding the underlying concepts and assumptions. Often, these fundamental concepts can be taught through asking the students to design and execute experiments, but this can take substantial class time. Our long term goal is to develop a library of short and cheap (2-5 min and under {\$}1) experiments that all students can execute in class. These experiments promote discussion between the students and through that, a better fundamental grasp of the material. In this talk, we will show a number of experimental videos that we are developing for the Gallery of Experiments at eFluids.com. We will present both common experiments and those in areas students usually do not experience in an introductory course: low Reynolds number and non-Newtonian fluids. We will end with a discussion with the audience to look for new ideas and potential experiments. In collaboration with Gareth McKinley, Massachusetts Institute of Technology. [Preview Abstract] |
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