Unified Fundamental Equation of State of Argon: Construction Technique Within the Framework of Scaling Theory and Tables of Standard Reference Data.
Saved in:
| Title: | Unified Fundamental Equation of State of Argon: Construction Technique Within the Framework of Scaling Theory and Tables of Standard Reference Data. |
|---|---|
| Authors: | Kolobaev, V. A.1 (AUTHOR) kolobaev@vniims.ru, Rykov, S. V.2 (AUTHOR), Kudryavtseva, I. V.2 (AUTHOR), Ustyuzhanin, E. E.3 (AUTHOR), Popov, P. V.1 (AUTHOR), Rykov, V. A.2 (AUTHOR), Kozlov, A. D.1 (AUTHOR) |
| Source: | Measurement Techniques. Feb2023, Vol. 65 Issue 11, p793-802. 10p. |
| Subjects: | Equations of state, Vapor-liquid equilibrium, Isobaric heat capacity, Phase equilibrium, Critical point (Thermodynamics), Argon, Speed of sound |
| Abstract: | A technique has been developed for constructing a unified fundamental equation of state of an individual substance for a wide range of state parameters. The technique is based on the Benedek hypothesis and the method of pseudocritical points, which are based on the assertion that the isochoric and isobaric heat capacities, the isothermal compressibility coefficient, and the speed of sound in the vicinity of the critical point on the critical and noncritical isochores are described by power-law dependences with the same critical indices. A unified fundamental equation of state of argon has been created that satisfies the requirements of the theory of scaling of critical phenomena, transforms into a virial equation of state in the gas region, satisfactorily conveys experimental data on density, isochoric and isobaric heat capacities, and sound speed within the uncertainty of the initial experimental data in the single-phase region in a wide range temperatures and pressures, on the phase equilibrium line in the range from the triple point to the critical point and in the near-critical region. On the basis of a unified fundamental equation of state, tables of standard reference data for argon were developed and certified in the temperature range of 83.806– 1200 K and pressures of 0.1–1000 MPa, and a statistical estimate of the accuracy of the tables was made. [ABSTRACT FROM AUTHOR] |
| Copyright of Measurement Techniques is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
|
Full text is not displayed to guests.
Login for full access.
|
|
Be the first to leave a comment!
