Source:http://linkedlifedata.com/resource/pubmed/id/14682933
Switch to
| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
4 Pt 1
|
| pubmed:dateCreated |
2003-12-19
|
| pubmed:abstractText |
We report a study of viscosity by the method of Helfand moment in systems with periodic boundary conditions. We propose a new definition of Helfand moment which takes into account the minimum image convention used in molecular dynamics with periodic boundary conditions. Our Helfand-moment method is equivalent to the method based on the Green-Kubo formula and is not affected by ambiguities due to the periodic boundary conditions. Moreover, in hard-ball systems, our method is equivalent to that developed by Alder, Gass, and Wainwright [J. Chem. Phys. 53, 3813 (1970)]. We apply and verify our method in a fluid composed of N> or =2 hard disks in elastic collisions. We show that the viscosity coefficients already take values in good agreement with Enskog's theory for N=2 hard disks in a hexagonal geometry.
|
| pubmed:language |
eng
|
| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
|
| pubmed:month |
Oct
|
| pubmed:issn |
1539-3755
|
| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:volume |
68
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
041204
|
| pubmed:year |
2003
|
| pubmed:articleTitle |
Viscosity in molecular dynamics with periodic boundary conditions.
|
| pubmed:affiliation |
Center for Nonlinear Phenomena and Complex Systems, Université Libre de Bruxelles, Campus Plaine, Code Postal 231, B-1050 Brussels, Belgium.
|
| pubmed:publicationType |
Journal Article
|