کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
204442 | 460731 | 2007 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: On the phase equilibrium Stockmayer fluids On the phase equilibrium Stockmayer fluids](/preview/png/204442.png)
The fluid phase equilibrium of the Stockmayer fluid is investigated using a thermodynamic perturbation theory approach. The reference and the perturbation potential are the Lennard–Jones potential and the dipolar–dipolar interactions, respectively. They are assumed to be represented by the modified Benedict–Webb–Rubin equation of state [J.K. Johnson, J.A. Zollweg, K.E. Gubbins, Mol. Phys. 78 (1993) 591–618] and the Padé approximant [G. Stell, J.C. Rasaiah, H. Narang, Mol. Phys. 27 (1974) 1393–1414], respectively. The asymmetry found in an analogous study [M.E. van Leeuwen, B. Smit, E.M. Hendriks, Mol. Phys. 78 (1993) 271–283] based on the BWR equation of state [J.J. Nicolas, K.E. Gubbins, W.B. Streett, D.J. Tildesley, Mol. Phys. 37 (1979) 1429–1454] is now not observed on the vapour–liquid equilibrium coexistence curves of Stockmayer fluids with dipolar strength of μ*2 = 1, 2, 3, and 4. Results agree with computer simulations for dipolar strength of μ*2 = 1; however as strength dipole increases, liquid densities are over-estimated.
Journal: Fluid Phase Equilibria - Volume 253, Issue 2, 1 May 2007, Pages 171–175