Abstract

In the relentless pursuit of understanding the molecular interactions governing fluid behavior, few theoretical frameworks have had as transformative an impact as the Statistical Associating Fluid Theory (SAFT). Since its introduction in the early 1990s, SAFT has evolved from a theoretical construct into one of the most rigorous and versatile equations of state (EoSs) available, offering accurate predictions of thermophysical properties for a wide range of complex fluids.

Unlike classical equations like van der Waals or Peng–Robinson, which often rely on heuristic corrections to describe fluid behavior, SAFT EoS is firmly rooted in statistical mechanics. It represents molecules as chains of interacting segments and explicitly accounts for intermolecular forces such as dispersion, repulsion, and crucially, association (particularly hydrogen bonding). This molecular-level detail introduces a new paradigm in phase behavior modeling, one that bridges the microscopic and macroscopic worlds with remarkable fidelity.

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Citation

Arash Pakravesh. “From Molecules to Industry: The Expanding Role of SAFT Equation of State in Engineering Science". Clareus Scientific Science and Engineering 2.7 (2025): 01-03.

Copyright

© 2025 Arash Pakravesh. Licensee Clareus Scientific Publications. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.