Engineer devises ways to improve gas mileage

AgarwalA mechanical engineer at Washington University in St. Louis is developing techniques that will lessen our monetary pain at the pump by reducing the drag of vehicles — planes, autos and trucks. Drag is an aerodynamic force that is the result of resistance a body encounters when it moves in a liquid or gaseous medium (such as air). Reduction in drag means less fuel would be required to overcome the fluid resistance encountered by the moving vehicle. Working with undergraduate and graduate students, Ramesh K. Agarwal, Ph.D, the William Palm Professor of Engineering at WUSTL, has successfully demonstrated that the drag of airplane wings and cars/trucks can be reduced by employing the active flow control technology.

Grant helps WUSTL computer science faculty emphasize active learning

Computer science faculty are exposing their undergraduate students to learning in ways that prepare them for interaction in the real work place. It’s not about “staying between the lines,” but more about getting out of your seat, moving around and interacting with your classmates. It’s called active learning, a learning-laboratory-based tutorial teaching concept.

U.S.-led team confirms an Alps-like mountain range exists under east Antarctic ice sheet

Flying twin-engine light aircraft the equivalent of three trips around the globe and working in temperatures that averaged minus 30 degrees Celsius, an international team of scientists, including one from Washington University in St. Louis, has not only verified the existence of a mountain range that is suspected to have caused the massive East Antarctic Ice Sheet to form, but also has created a detailed picture of the rugged landscape buried under more than four kilometers (2.5 miles) of ice. Douglas A. Wiens, Ph.D., WUSTL professor and chair of earth and planetary sciences, is part of the seismology team.

Origin of galactic cosmic rays focus of NASA grant

Courtesy photoW. Robert Binns and TIGER prelaunch in AntarcticaAstrophysicists at Washington University in St. Louis have received a five-year, $3,225,740 grant from the National Aeronautics and Space Administration to design and build Super-TIGER — a Trans-Iron Galactic Element Recorder — and then fly it aboard a high-altitude balloon over Antarctica to collect rare atomic particles called galactic cosmic rays. Super-TIGER’s first flight in search of the origin of cosmic rays is planned for December 2012.

A Newtonian system that mimics the baldness of rotating black holes

Photo by Don DavisRotating black hole: one of nature’s most perfect objectsA physicist at Washington University in St. Louis has found a new twist on a 40-year-old discovery — “the Carter constant” — about the motion of particles in the external field of a rotating black hole. Clifford M. Will, Ph.D., the James S. McDonnell Professor of Physics in Arts & Sciences, has shown that even in Newton’s gravity, arrangements of masses exist whose gravitational field also admits a Carter-like constant of motion. The finding has implications for gravitational-wave astronomy, he says.

New direction in teaching computer science emphasizes activity, interaction, critique

Computer science faculty at Washington University in St. Louis are exposing their undergraduate students to learning in ways that prepare them for interaction in the real work place. It’s not about “staying between the lines,” but more about getting out of your seat, moving around and interacting with your classmates. It’s called active learning, a learning-laboratory- based tutorial teaching concept.
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