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Science of Speed

Fluid Dynamics Engineers Help Potential Olympic Swimmers with Water Flow Technology

November 1, 2009

Fluid dynamics engineers assisted in the creation of state-of-the-art equipment and mathematical techniques that Olympic swimming coaches have been using to train their teams. Their water flow diagnostic technologies utilize a variation of aerospace force measurement tools to report the performance of the swimmer in real-time via a video-based flow measurement technique called Digital Particle Image Velocimetry (DPIV). The combination of highly sophisticated mathematics and stop-motion video technology allow researchers to identify specific vortices, hone in on the movement of the water and calculate how much energy the swimmer exerts.

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Science Insider

STREAMLINING MAKES A BIG DIFFERENCE: Air resistance is also a huge problem for automotive engineers. In the trucking industry, with enormous vehicles hauling enormous loads, aerodynamics issues have long taken a back seat in design. Now, with concerns over fuel prices and environmental impacts increasing, engineers are attempting to tweak truck cabs and trailers in hopes of reducing the air resistance and, consequently, the amount of fuel consumed. It is even more important for NASCAR, as races can be decided by fractions of a second, and every last bit of power lost to friction is costly.

HIGH-TECH VISION TRAINING: Athletes looking for an edge are also well-served to train to improve their vision. Optometrists are able to use a variety of tools to assess visual perception and to help athletes fine tune it, in a manner similar to how individuals work out to improve strength and agility. Training exercises include tracking fast-moving lights, tapping sections of a peg board when they light up, and more. Training can be tailored to specific attributes vital in certain sports, or even for specialized tasks within a game. For example, baseball infielders and outfielders might be given different exercises.

The Institute of Electrical and Electronics Engineers, Inc.-USA, and American Physical Society, the American Mathematical Society and the Mathematical Association of America, contributed to the information contained in the TV portion of this report.

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To Go Inside This Science:

Timothy Wei; Ph.D.
Rensselaer Polytechnic Institute
Troy, New York 12180-3590
(518) 276-6298 [voice]
weit@rpi.edu

Institute of Electrical and Electronics Engineers, Inc.
IEEE
IEEE-USA
Pender McCarter
p.mccarter@ieee.org

Ivars Peterson
Mathematical Association of America
Washington, DC 20036-1358
ipeterson@maa.org
1-800-741-94155

Mike Breen and Annette Emerson
American Mathematical Society
Providence, RI 02904-2294
paoffice@ams.org
1-800-321-4267