28th Congress of the International Council of the Aeronautical Sciences, 23 - 28 September 2012, Brisbane, Australia
Paper ICAS 2012-11.4.2

INSTABILITY CHARACTERISTICS OF SHOCK WAVES AHEAD OF A HEMISPHERICAL SHELL AT SUPERSONIC SPEEDS

T. Mizukaki, N. Kawamura
Tokai Univ., Japan

Keywords: shock waves, hemispherical shells, supersonic speed

In this paper, experimental and numerical investigation on the mechanism of vibrations of shock waves ahead of a hemispherical shell will be described. Compering visualized images with numerical result, we have confirmed that small vortex from the edge of the model continuously interfered and finally distorted the bow shock.

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