(321ar) A Conformal Equation of State for Carbon Tetrafluoride and Neopentane from Molecular Simulation
AIChE Annual Meeting
2006
2006 Annual Meeting
Engineering Sciences and Fundamentals
Thermodynamics and Transport Properties (Posters)
Tuesday, November 14, 2006 - 6:30pm to 9:00pm
In a coarse-grained sense both carbon tetrafluoride and neopentane are regular tetrahedral molecules. In an attempt to devise 4 center Lennard-Jones potential models for both substances, it turned out that the reduced side lengths of the tetrahedra L=l/ó are precisely identical, where ó is the site-site potential zero. This implies a conformal interaction model and suggests that the theorem of corresponding states holds precisely. Large scale Monte Carlo simulations have been conducted to set up an equation of state (EOS) for this conformal model over the entire fluid range. Comparison with experiments suggests that this EOS exhibits technical accuracy for both substances.