This work presents the results of an experimental study of ice particle impacts on a moving wedge. The experiment was conducted in the Adverse Environment Rotor Test Stand (AERTS) facility located at Penn State University. The wedge was placed at the tip of a rotating blade. Ice particles shot from a pressure gun intercepted the moving wedge and impacted it at a location along its circular path. The upward velocity of the ice particles varied from 7 to 12 meters per second. Wedge velocities were varied from 0 to 120 meters per second. Wedge angles tested were 0°, 30°, 45°, and 60°. High speed imaging combined with backlighting captured the impact allowing observation of the effect of velocity and wedge angle on the impact and the post-impact fragment behavior. It was found that the pressure gun and the rotating wedge could be synchronized to consistently obtain ice particle impacts on the target wedge. It was observed that the number of fragments increase with the normal component of the impact velocity. Particle fragments ejected immediately after impact showed velocities higher than the impact velocity. The results followed the major qualitative features observed by other researchers for hailstone impacts, even though the reduced scale size of the particles used in the present experiment as compared to hailstones was 4:1.
|Transactions of Japanese Society for Medical and Biological Engineering
|Published - 2013
|35th Annual International Conference of IEEE Engineering in Medicine and Biology Society, EMBC 2013 in conjunction with 52nd Annual Conference of Japanese Society for Medical and Biological Engineering, JSMBE - Osaka, Japan
Duration: Jul 3 2013 → Jul 7 2013
All Science Journal Classification (ASJC) codes
- Biomedical Engineering