Attenuation of shock waves propagating over arrayed spheres

Atsushi Abe; Kazuyoshi Takayama

doi:10.1117/12.424329

17 April 2001 Attenuation of shock waves propagating over arrayed spheres

Atsushi Abe, Kazuyoshi Takayama

Proceedings Volume 4183, 24th International Congress on High-Speed Photography and Photonics; (2001) https://doi.org/10.1117/12.424329
Event: 24th International Congress on High-Speed Photography and Photonics, 2000, Sendai, Japan

Abstract

The investigation of attenuation of shock waves propagating over complex geometries is an important and fundamental topic of shock wave research. However, previous studies have been mostly for two-dimensional and relatively simple geometries. In this study, the result of shock wave attenuation over an array of spheres is visualized quantitatively by sequential holographic interferometry in a 60 mm X 150 mm diaphragmless shock tube with very repeatable performance. Interferograms have been re-arranged in time order so as to present an animated display. This dynamic display allows one readily to understand the development of complex shock wave interactions. For comparison two cases were examined: arrayed spheres and arrayed cylinders. It is revealed that for identical initial conditions and blockage ratio, shock waves attenuate more quickly in the case of the arrayed spheres than in arrayed cylinders.

Citation Download Citation

Atsushi Abe and Kazuyoshi Takayama "Attenuation of shock waves propagating over arrayed spheres", Proc. SPIE 4183, 24th International Congress on High-Speed Photography and Photonics, (17 April 2001); https://doi.org/10.1117/12.424329

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