Propagation of the spherical short-duration shock wave in a straight tunnel

Jae Woon Ahn; So Young Song; Jun Wung Lee; Joon Mook Yang

doi:10.1117/12.23936

1 April 1991 Propagation of the spherical short-duration shock wave in a straight tunnel

Jae Woon Ahn, So Young Song, Jun Wung Lee, Joon Mook Yang

Proceedings Volume 1358, 19th Intl Congress on High-Speed Photography and Photonics; (1991) https://doi.org/10.1117/12.23936
Event: 19th International Congress on High-Speed Photography and Photonics, 1990, Cambridge, United Kingdom

Abstract

Propagation processes of shock waves incident at the entrance of the straight shock tube have been photographed with a high-speed camera and pressure-time profiles have been recorded with piezoelectric gages. It is concluded that the shock front repeatedly changes a convex to a concave and vice versa with a series of damped oscillations and becomes a stable plane shock front determined by experimental conditions. Good agreement is found between the calculated and measured shock wave interaction angle and the velocity of the Mach stem for the region located up to 24 cm from the entrance. There is considerable difference between the calculated and measured pressure near the entrance of a shock tube but as the shock wave propagates farther, the difference becomes small and remains within the range of experimental error.

Citation Download Citation

Jae Woon Ahn, So Young Song, Jun Wung Lee, and Joon Mook Yang "Propagation of the spherical short-duration shock wave in a straight tunnel", Proc. SPIE 1358, 19th Intl Congress on High-Speed Photography and Photonics, (1 April 1991); https://doi.org/10.1117/12.23936

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