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On isentropic lines and isentropic exponents

Srinivasan, Kandadai and Dutta, Pradip and Velasco, Santiago and White, Juan A (2013) On isentropic lines and isentropic exponents. In: Journal of Chemical Thermodynamics, 56 . pp. 144-148.

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Official URL: http://dx.doi.org/10.1016/j.jct.2012.07.013


The three indicators of isentropic lines, namely, the isentropic index, the ratio of pressure and density p/rho and the derivative (partial derivative p/partial derivative rho)s are investigated for all of the fluids in the RefProp 9.0 program. The behaviour of these three entities is evaluated along the saturated vapour line as well as in the superheated vapour region. There is a distinct demarcation of fluids whose isentropic indices can be less than 1 and others for which this behaviour is absent. The critical molar volume is found to be the characterizing feature. Several other interesting features of those three thermodynamic properties are also highlighted. It is observed that most practical engineering compression and expansion processes occur along the decreasing direction of the sound speed.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier Science.
Keywords: Isentropic Lines; Sound Speed; Isentropic Index
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
Depositing User: Id for Latest eprints
Date Deposited: 15 Feb 2013 10:22
Last Modified: 15 Feb 2013 10:22
URI: http://eprints.iisc.ac.in/id/eprint/45362

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