| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | El Hawary, Ahmed | - |
| dc.contributor.author | Hellmann, Robert | - |
| dc.contributor.author | Meier, Karsten | - |
| dc.contributor.author | Busemann, Henner | - |
| dc.date.accessioned | 2022-09-30T05:48:21Z | - |
| dc.date.available | 2022-09-30T05:48:21Z | - |
| dc.date.issued | 2019-10-21 | - |
| dc.identifier.issn | 0021-9606 | - |
| dc.identifier.issn | 1089-7690 | - |
| dc.description.abstract | An eighth-order virial equation of state (VEOS) for krypton, valid for temperatures up to 5000 K, was developed using the accurate potential functions proposed by Jäger et al. [J. Chem. Phys. 144, 114304 (2016)] for the pair interactions and nonadditive three-body interactions between krypton atoms. While the second and third virial coefficients were already calculated by Jäger et al., the fourth- to eighth-order coefficients were determined in the present work. A simple analytical function was fitted individually to the calculated values of each virial coefficient to obtain the VEOS in an easy-to-use analytical form. To enable a stringent test of the quality of the new VEOS, we measured the speed of sound in krypton in the temperature range from 200 K to 420 K and at pressures up to 100 MPa with a very low uncertainty (at the 0.95 confidence level) of 0.005%-0.018% employing the pulse-echo technique. In order to verify that the isotopic composition of the krypton sample conforms to that of natural krypton in air, high-precision measurements of krypton isotope ratios using a high-sensitivity noble gas mass spectrometer were performed. The extensive comparison with the new speed-of-sound data as well as with experimental p-ρ-T and speed-of-sound data from the literature indicates that pressures and speeds of sound calculated using our new VEOS have uncertainties (at the 0.95 confidence level) of less than 0.1% at state points at which the VEOS is sufficiently converged. | - |
| dc.description.sponsorship | Thermodynamik | - |
| dc.description.sponsorship | Universität Rostock | - |
| dc.language.iso | eng | - |
| dc.relation.ispartof | The journal of chemical physics : JCP | - |
| dc.title | Eighth-order virial equation of state and speed-of-sound measurements for krypton | - |
| dc.type | Article | - |
| dc.identifier.doi | 10.1063/1.5124550 | - |
| dc.identifier.pmid | 31640348 | - |
| dc.identifier.scopus | 2-s2.0-85073757432 | - |
| dcterms.bibliographicCitation.volume | 151 | - |
| dcterms.bibliographicCitation.issue | 15 | - |
| local.submission.type | only-metadata | - |
| dc.type.article | Scientific Article | - |
| hsu.peerReviewed | ✅ | - |
| item.grantfulltext | none | - |
| item.languageiso639-1 | en | - |
| item.fulltext_s | No Fulltext | - |
| item.openairetype | Article | - |
| item.fulltext | No Fulltext | - |
| crisitem.author.dept | Thermodynamik | - |
| crisitem.author.dept | Thermodynamik | - |
| crisitem.author.parentorg | Fakultät für Maschinenbau und Bauingenieurwesen | - |
| crisitem.author.parentorg | Fakultät für Maschinenbau und Bauingenieurwesen | - |
| Appears in Collections: | 3 - Publication references (without fulltext) | |
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