11 January 2007 Visual determination of the onset of irregular blast wave reflection
Author Affiliations +
Proceedings Volume 6279, 27th International Congress on High-Speed Photography and Photonics; 62791X (2007) https://doi.org/10.1117/12.725254
Event: 27th International congress on High-Speed Photography and Photonics, 2006, Xi'an, China
Abstract
This paper presents further results of an ongoing experimental and numerical investigation into the unsteady process of blast wave reflection from straight smooth surfaces. It is shown that basic blast wave phenomena such as the transition from regular to irregular wave reflection can be adequately and conveniently studied in a laboratory environment by using small charges with masses in the milligram range. While the laboratory scale generally provides greater accessibility, it also imposes more stringent conditions on the diagnostics than the large-scale environment. The paper reviews the previously found considerable discrepancies between numerical and experimental results for the location xtr of the transition from regular to irregular wave reflection. These are caused by the initially minuscule size and gradual growth of the Mach stem and the limited resolution of the recording material. Different techniques are used to improve the accuracy of the experimental determination of the transition point, and a new combination of modern high-speed photography with the traditional soot technique is shown to be the most promising tool for this purpose.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
H. Kleine, K. Hiraki, E. Timofeev, K. Ohashi, H. Maruyama, T. Hayashida, Y. Jun, K. Kitamura, T. Nakajima, A. Gojani, K. Takayama, T. G. Etoh, "Visual determination of the onset of irregular blast wave reflection", Proc. SPIE 6279, 27th International Congress on High-Speed Photography and Photonics, 62791X (11 January 2007); doi: 10.1117/12.725254; https://doi.org/10.1117/12.725254
PROCEEDINGS
10 PAGES


SHARE
RELATED CONTENT

Future Objectives Of Army Visual Simulation
Proceedings of SPIE (September 01 1975)
High-speed imaging of dynamic shock wave reflection phenomena
Proceedings of SPIE (February 10 2009)
High-speed photography of microscale blast wave phenomena
Proceedings of SPIE (March 17 2005)
Imaging at the Utah test and training range
Proceedings of SPIE (January 19 1993)
Survey Of High Speed Photography In The United Kingdom
Proceedings of SPIE (July 27 1979)
New high-speed video system for motion analysis
Proceedings of SPIE (January 19 1993)

Back to Top