The reflection and transmission of shock waves I: The reflection of a detonation wave at a boundary

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Abstract
It is shown that, for a shock wave advancing through any physically real barotropic medium, the nature of the reflected wave is uniquely determined by the relative shock impedances of the medium through which the incident wave passes and the medium upon which it falls. A simple criterion is found for determining the nature of the reflection of a detonation wave at the end of a block of explosive. Particular attention is paid to the examples of an explosive in contact with a gas, water or solid surface. Certain approximations, which may be useful when them is a reflected shock wave, are discussed.

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