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Thermodynamics of the Adiabatic Expansion of a Mixture of Two Phases

Cowperthwaite, M. and Ahrens, T. J. (1967) Thermodynamics of the Adiabatic Expansion of a Mixture of Two Phases. American Journal of Physics, 35 (10). pp. 951-955. ISSN 0002-9505.

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The thermodynamics of the adiabatic expansion of a mixture of two phases capable of interchanging heat and matter across the phase boundary is presented. The law of conservation of energy is applied to each phase considered as an open system and to the mixture of phases considered as a closed system. Expressions for the entropy production resulting from internal irreversible processes demonstrate the difference between adiabatic and isentropic changes and specify conditions under which the expansion of a closed two-phase system is isentropic. Three such possible isentropic processes are defined, and expressions are derived for the temperature-pressure-volume states achieved in them. The thermodynamic treatment is useful in studies of the adiabatic release of a shock-induced mixture of phases.

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Additional Information:© 1967 American Association of Physics Teachers. (Received 27 April 1967) The authors wish to thank Dr. G. E. Duvall for his helpful discussions.
Issue or Number:10
Record Number:CaltechAUTHORS:20150811-165610837
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Official Citation:Thermodynamics of the Adiabatic Expansion of a Mixture of Two Phases M. Cowperthwaite and T. J. Ahrens Am. J. Phys. 35, 951 (1967);
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:59432
Deposited By: George Porter
Deposited On:12 Aug 2015 15:23
Last Modified:03 Oct 2019 08:47

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