A universal representation of the thermodynamic properties of fluids in the critical region

✍ Scribed by J. V. Sengers; J. M. H. Levelt Sengers

• Publisher: Springer
• Year: 1984
• Tongue: English
• Weight: 590 KB
• Volume: 5
• Category: Article
• ISSN: 0195-928X
• DOI: 10.1007/bf00505500

✦ Synopsis

To characterize the behavior of the thermodynamic properties of systems near a critical point, systems are grouped into universality classes. Systems within a universality class have the same universal critical exponents and scaling functions. Specifically, fluids are expected to belong to the universality class of three-dimensional Ising-like systems for which the universal quantities have been calculated with considerable accuracy. A scaled fundamental equation is presented which incorporates these theoretical predictions. Results obtained for various technologically important fluids, namely ordinary steam, heavy steam, ethylene, and isobutane, are discussed.