What is it about?

A new equation of state for argon was developed with the view of extending the range of validity of the equation of state previously proposed by Tegeler et al. and obtaining a better physical description of the experimental thermodynamic data for the whole fluid region (single-phase, metastable, and saturation states).

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Why is it important?

In this work, the fundamental equation for Helmholtz free energy was derived from the measured quantities CV(ρ, T) and P(ρ, T). The empirical description of the isochoric heat capacity CV(ρ, T) was based on an original empirical description explicitly containing the metastable states.

Perspectives

This approach can easily be applied to other fluids.

Dr Frédéric AITKEN
Laboratoire de Genie Electrique de Grenoble

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This page is a summary of: A New Non-Extensive Equation of State for the Fluid Phases of Argon, Including the Metastable States, from the Melting Line to 2300 K and 50 GPa, Fluids, April 2024, MDPI AG,
DOI: 10.3390/fluids9050102.
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