Scale equations for the coexistence curve, the capillary constant and the surface tension of n-alkanes
| hal.structure.identifier | Laboratoire d'Ingénierie des Matériaux et des Hautes Pressions [LIMHP] | |
| dc.contributor.author | LE NEINDRE, Bernard | |
| hal.structure.identifier | ESEME : Équipe du Supercritique pour l'Environnement, les Matériaux et l'Espace : Équipe commune CEA-CNRS (2000-2014) | |
| dc.contributor.author | GARRABOS, Yves | |
| dc.date.issued | 2002 | |
| dc.identifier.issn | 0378-3812 | |
| dc.description.abstractEn | A review of experimental data of several fluids shows that their coexistencecurve follows a power law in reduced temperature at the approach of the critical point, with an universal exponent equal to 0.325, their capillaryconstant a power law with an universal exponent equal to 0.925 and their surfacetension a power law with an universal exponent equal to 1.26. In the critical region, the concept of two-scale-factor universality was used to predict the density difference amplitude, the capillaryconstant amplitude, and the surfacetension amplitude between near critical vapor and liquid phases. A comparison with amplitudes determined from experimental data is given. In order to extend this universality all along the liquid-gas coexistencecurve from the triple point to the critical point for n-alkanes, a mean field approximation was used far away from TC. We show that the density difference, the capillaryconstant and the surfacetension can be calculated with a reasonable accuracy by generalized scaled equations adding only two empirical constants. A comparison between calculated and experimental data is presented. | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.subject.en | Alkanes | |
| dc.subject.en | Capillary constant | |
| dc.subject.en | Coexistense curve | |
| dc.subject.en | Critical point | |
| dc.subject.en | Scaling laws | |
| dc.subject.en | Surface tension | |
| dc.title.en | Scale equations for the coexistence curve, the capillary constant and the surface tension of n-alkanes | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/S0378-3812(01)00737-3 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Fluid Phase Equilibria | |
| bordeaux.page | 165-183 | |
| bordeaux.volume | 198 | |
| bordeaux.issue | 2 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00715970 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00715970v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Fluid%20Phase%20Equilibria&rft.date=2002&rft.volume=198&rft.issue=2&rft.spage=165-183&rft.epage=165-183&rft.eissn=0378-3812&rft.issn=0378-3812&rft.au=LE%20NEINDRE,%20Bernard&GARRABOS,%20Yves&rft.genre=article |
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