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Transport coefficients of the Lennard-Jones model fluid. III. Bulk viscosity.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Meier, Karsten Laesecke, Arno D. Kabelac, Stephan |
| Copyright Year | 2005 |
| Abstract | In an extensive computer simulation study, the transport coefficients of the Lennard-Jones model fluid were determined with high accuracy from equilibrium molecular-dynamics simulations. In the frame of time-correlation function theory, the generalized Einstein relations were employed to evaluate the transport coefficients. This third of a series of four papers presents the results for the bulk viscosity. With comprehensive simulation data at over 350 state points, the temperature and density dependences of the bulk viscosity are characterized in this work over a wide range of fluid states. The bulk viscosity exhibits a large critical enhancement similar to that known for the thermal conductivity, but it extends much farther into the supercritical region and can be observed even at 4.5 times the critical temperature. An investigation of the pressure-fluctuation autocorrelation functions shows that the enhancement is caused by extremely slowly decaying pressure fluctuations. |
| Starting Page | 14513 |
| Ending Page | 14513 |
| Page Count | 1 |
| File Format | PDF HTM / HTML |
| DOI | 10.1063/1.1828040 |
| PubMed reference number | 15638680 |
| Journal | Medline |
| Volume Number | 122 |
| Issue Number | 1 |
| Alternate Webpage(s) | https://ws680.nist.gov/publication/get_pdf.cfm?pub_id=50053 |
| Alternate Webpage(s) | https://doi.org/10.1063/1.1828040 |
| Journal | The Journal of chemical physics |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
