Shock waves in a gas with several relaxing internal energy modes

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Abstract
The structure of plane steady shock waves in a gas with several internal energy modes which relax in parallel is investigated. Transport effects are neglected. Conditions for continuity and monotonicity of the velocity profile are discussed; when all modes have constant specific heats and relaxation times it is established that velocity must decrease monotonically. Internal mode energy contents may overshoot their local equilibrium values. Numerical results for waves in a hypothetical gas with two relaxing modes are presented for purposes of illustration.

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