We have shown previously that the 'van der Waals loop' of the equation of state, an artifact which appeared in computer simulations for small-size systems, can be removed by enlarging the system size. In this Letter we argue that a large system size simulation is required only when the surface free
Can the “van der Waals loop” vanish?
✍ Scribed by Atsushi Kido; Osamu Kitao; Koichiro Nakanishi
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 389 KB
- Volume
- 199
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
The "van der Waals loop" is observed below the critical point in the phase diagram calculated by standard computer simtdations. We tried to remove this artificial behavior by modifying the interparticle potential and treating large systems. With this new method, we can make most of the unstable region in the phase diagram vanish. Detailed investigations were aimed at inhomogeneous fluid structures, which cannot be seen in small systems.
📜 SIMILAR VOLUMES
The existence of solutions for the Riemann problem of a mixed type system is established by a vanishing similarity viscosity approach. The solutions that we construct are also admissible by the travelling wave criterion derived from the most common form of viscosity. The assumption needed includes t
An extension of the Roe linearization method to nonideal gases is described and applied to the particular case of the van der Waals gas. A supplementary relation connecting the thermodynamic variables is introduced to decouple the evaluation of the intermediate velocity and total specific enthalpy f