NASA's commitment to provide aeronautical research opportunities to U.S. universities has led to another success, this time through an inventive student who earned his Ph.D. by creating a tiny sensor that beats anything seen in 20 years.
Vijay Chandrasekharan is a research associate and doctoral candidate at the University of Florida, where he produced a micro-electronic sensor that measures the amount of shear stress created when turbulent air flows over a surface.
The sensor already has proven its usefulness in improving the basic understanding of turbulent flow in gases and liquids, and in characterizing wind tunnels.
When air flows through a wind tunnel, some air molecules stick to the wall of the tunnel while others flow through at the speed of the wind. The difference in speed exerts a drag force on the wall of the tunnel and causes friction in the air. Drag and friction are related to shear stress.
The new sensor can measure a wider range of shear stress than can any sensor of its type before.
View Full Article
No entries found