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Main Title: | Thermophysical Properties of the Lennard-Jones Fluid: Database and Data Assessment |
Author(s): | Stephan, Simon Thol, Monika Vrabec, Jadran Hasse, Hans |
Type: | Article |
Language Code: | en |
Abstract: | Literature data on the thermophysical properties of the Lennard-Jones fluid, which were sampled with molecular dynamics and Monte Carlo simulations, were reviewed and assessed. The literature data were complemented by simulation data from the present work that were taken in regions in which previously only sparse data were available. Data on homogeneous state points (for given temperature T and density ρ: pressure p, thermal expansion coefficient α, isothermal compressibility β, thermal pressure coefficient γ, internal energy u, isochoric heat capacity cv, isobaric heat capacity cp, Grüneisen parameter Γ, Joule–Thomson coefficient μJT, speed of sound w, Helmholtz energy a, and chemical potential) were considered, as well as data on the vapor–liquid equilibrium (for given T: vapor pressure ps, saturated liquid and vapor densities ρ′ and ρ″, respectively, enthalpy of vaporization Δhv, and as well as surface tension γ). The entire set of available data, which contains about 35 000 data points, was digitalized and included in a database, which is made available in the Supporting Information of this paper. Different consistency tests were applied to assess the accuracy and precision of the data. The data on homogeneous states were evaluated pointwise using data from their respective vicinity and equations of state. Approximately 10% of all homogeneous bulk data were discarded as outliers. The vapor–liquid equilibrium data were assessed by tests based on the compressibility factor, the Clausius–Clapeyron equation, and by an outlier test. Seven particularly reliable vapor–liquid equilibrium data sets were identified. The mutual agreement of these data sets is approximately ±1% for the vapor pressure, ±0.2% for the saturated liquid density, ±1% for the saturated vapor density, and ±0.75% for the enthalpy of vaporization—excluding the region close to the critical point. |
URI: | https://depositonce.tu-berlin.de/handle/11303/10447 http://dx.doi.org/10.14279/depositonce-9399 |
Issue Date: | 14-Oct-2019 |
Date Available: | 5-Dec-2019 |
DDC Class: | 541 Physikalische Chemie |
Subject(s): | Lennard-Jones fluid thermophysics molecular dynamics Monte Carlo simulation literature data |
Sponsor/Funder: | EC/H2020/694807/EU/Enrichment of Components at Interfaces and Mass Transfer in Fluid Separation Technologies/ENRICO |
License: | http://rightsstatements.org/vocab/InC/1.0/ |
Journal Title: | Journal of Chemical Information and Modeling |
Publisher: | American Chemical Society (ACS) |
Publisher Place: | Washington, DC |
Volume: | 59 |
Issue: | 10 |
Publisher DOI: | 10.1021/acs.jcim.9b00620 |
Page Start: | 4248 |
Page End: | 4265 |
EISSN: | 1549-960X |
ISSN: | 1549-9596 |
Appears in Collections: | FG Thermodynamik und Thermische Verfahrenstechnik » Publications |
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