Freezing density scaling of transport coefficients in the Weeks-Chandler-Andersen fluid
Fuente:
arXiv
Enregistré dans:
| Auteurs principaux: | , |
|---|---|
| Format: | Preprint |
| Publié: |
2024
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1866910423201087488 |
|---|---|
| author | Khrapak, S. A. Khrapak, A. G. |
| author_facet | Khrapak, S. A. Khrapak, A. G. |
| contents | It is shown that the transport coefficients (self-diffusion, shear viscosity, and thermal conductivity) of the Weeks-Chandler-Anderson (WCA) fluid along isotherms exhibit a freezing density scaling (FDS). The functional form of this FDS is essentially the same or closely related to those in the Lennard-Jones fluid, hard-sphere fluid, and some liquefied noble gases. This proves that this FDS represents a quasi-universal corresponding state principle for simple classical fluids with steep interactions. Some related aspects such as Stokes-Einstein relation without a hydrodynamic diameter and gas-to-liquid dynamical crossover are briefly discussed. Simple fitting formula for the transport coefficients of the dense WCA fluid are suggested. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_16603 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Freezing density scaling of transport coefficients in the Weeks-Chandler-Andersen fluid Khrapak, S. A. Khrapak, A. G. Statistical Mechanics Soft Condensed Matter Chemical Physics It is shown that the transport coefficients (self-diffusion, shear viscosity, and thermal conductivity) of the Weeks-Chandler-Anderson (WCA) fluid along isotherms exhibit a freezing density scaling (FDS). The functional form of this FDS is essentially the same or closely related to those in the Lennard-Jones fluid, hard-sphere fluid, and some liquefied noble gases. This proves that this FDS represents a quasi-universal corresponding state principle for simple classical fluids with steep interactions. Some related aspects such as Stokes-Einstein relation without a hydrodynamic diameter and gas-to-liquid dynamical crossover are briefly discussed. Simple fitting formula for the transport coefficients of the dense WCA fluid are suggested. |
| title | Freezing density scaling of transport coefficients in the Weeks-Chandler-Andersen fluid |
| topic | Statistical Mechanics Soft Condensed Matter Chemical Physics |
| url | https://arxiv.org/abs/2404.16603 |