chapensk: Estimation of Gas Properties from the Lennard-Jones Potential

Calculation of gas transport properties (viscosity, diffusion, thermal conductivity) using Chapman-Enskok theory (Chapman 1918, <doi:10.1098/rsta.1918.0005>) and of the second virial coefficient (Vargas et al. 2001, <doi:10.1016/s0378-4371(00)00362-9>) using the Lennard-Jones (12-6) potential. Up to the third order correction is taken into account for viscosity and thermal conductivity. It is also possible to calculate the binary diffusion coefficients of polar and non-polar gases in non-polar bath gases (Brown et al. 2011, <doi:10.1016/j.pecs.2010.12.001>). 16 collision integrals are calculated with four digit accuracy over the reduced temperature range [0.3, 400] using an interpolation function of Kim and Monroe (2014, <doi:10.1016/j.jcp.2014.05.018>).

Getting started

Package details

AuthorStefan Langenberg [aut, cre] (ORCID: <https://orcid.org/0000-0001-5817-5469>)
MaintainerStefan Langenberg <langenberg@uni-bonn.de>
LicenseGPL-3
Version0.5
URL https://doi.org/10.32614/CRAN.package.chapensk https://github.com/langenbergstefan/chapensk 
Package repositoryView on CRAN
Installation Install the latest version of this package by entering the following in R:
install.packages("chapensk")

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chapensk documentation built on June 4, 2026, 5:09 p.m.