{ "_id": "6a21678dcd65a98ecbd35f38", "Package": "chapensk", "Type": "Package", "Title": "Estimation of Gas Properties from the Lennard-Jones Potential", "Version": "0.5", "Date": "2026-06-04", "Authors@R": "c(person(\"Stefan\", \"Langenberg\", role = c(\"aut\", \"cre\"),\nemail = \"langenberg@uni-bonn.de\",\ncomment = c(ORCID = \"0000-0001-5817-5469\")))", "Description": "Calculation of gas transport properties (viscosity,\ndiffusion, thermal conductivity) using Chapman-Enskok theory\n(Chapman 1918, ) and of the second\nvirial coefficient (Vargas et al. 2001,\n) using the Lennard-Jones\n(12-6) potential. Up to the third order correction is taken\ninto account for viscosity and thermal conductivity. It is also\npossible to calculate the binary diffusion coefficients of\npolar and non-polar gases in non-polar bath gases (Brown et al.\n2011, ). 16 collision integrals\nare calculated with four digit accuracy over the reduced\ntemperature range [0.3, 400] using an interpolation function of\nKim and Monroe (2014, ).", "License": "GPL-3", "URL": "https://doi.org/10.32614/CRAN.package.chapensk\nhttps://github.com/langenbergstefan/chapensk", "BugReports": "https://github.com/langenbergstefan/chapensk/issues", "NeedsCompilation": "no", "LazyData": "true", "Config/pak/sysreqs": "libgmp3-dev libmpfr-dev", "Repository": "https://langenbergstefan.r-universe.dev", "Date/Publication": "2026-06-04 09:05:33 UTC", "RemoteUrl": "https://github.com/langenbergstefan/chapensk", "RemoteRef": "HEAD", "RemoteSha": "afee6d31ef971682fe41a24decc2accee7add004", "Packaged": { "Date": "2026-06-04 11:51:42 UTC", "User": "root" }, "Author": "Stefan Langenberg [aut, cre] (ORCID:\n)", "Maintainer": "Stefan Langenberg ", "MD5sum": "7d6e743c38c513d28bd5ed26c32ee63a", "_user": "langenbergstefan", "_type": "src", "_file": "chapensk_0.5.tar.gz", "_fileid": "4312bf3c95afea7d460a863da94b3b8b85eb6052f4f96b1e8e38eb690454a623", "_filesize": 457998, "_sha256": "4312bf3c95afea7d460a863da94b3b8b85eb6052f4f96b1e8e38eb690454a623", "_created": "2026-06-04T11:51:42.000Z", "_published": "2026-06-04T11:54:53.191Z", "_distro": "noble", "_jobs": [ { "job": 79512502086, "time": 156, "config": "linux-devel-x86_64", "r": "4.7.0", "check": "OK", "artifact": "7410729378" }, { "job": 79512502090, "time": 131, "config": "linux-release-x86_64", "r": "4.6.0", "check": "OK", "artifact": "7410721506" }, { "job": 79512502184, "time": 118, "config": "macos-oldrel-arm64", "r": "4.5.3", "check": "OK", "artifact": "7410717380" }, { "job": 79512502063, "time": 109, "config": "macos-release-arm64", "r": "4.6.0", "check": "OK", "artifact": "7410714424" }, { "job": 79511998266, "time": 194, "config": "source", "r": "4.6.0", "check": "OK", "artifact": "7410676850" }, { "job": 79512502179, "time": 96, "config": "wasm-release", "r": "4.6.0", "check": "OK", "artifact": "7410710286" }, { "job": 79512502104, "time": 82, "config": "windows-devel", "r": "4.7.0", "check": "OK", "artifact": "7410705270" }, { "job": 79512502093, "time": 85, "config": "windows-oldrel", "r": "4.5.3", "check": "OK", "artifact": "7410706764" }, { "job": 79512502118, "time": 75, "config": "windows-release", "r": "4.6.0", "check": "OK", "artifact": "7410702956" } ], "_buildurl": "https://github.com/r-universe/langenbergstefan/actions/runs/26949821726", "_status": "success", "_host": "GitHub-Actions", "_upstream": "https://github.com/langenbergstefan/chapensk", "_commit": { "id": "afee6d31ef971682fe41a24decc2accee7add004", "author": "Stefan Langenberg ", "committer": "Stefan Langenberg ", "message": "0.5\n", "time": 1780563933 }, "_maintainer": { "name": "Stefan Langenberg", "email": "langenberg@uni-bonn.de", "orcid": "0000-0001-5817-5469" }, "_registered": true, "_dependencies": [ { "package": "R", "version": ">= 2.12.0", "role": "Depends" }, { "package": "methods", "role": "Depends" }, { "package": "Bessel", "role": "Depends" } ], "_owner": "langenbergstefan", "_selfowned": true, "_usedby": 0, "_updates": [ { "week": "2025-23", "n": 2 }, { "week": "2025-31", "n": 1 }, { "week": "2026-23", "n": 2 } ], "_tags": [ { "name": "v0.4", "date": "2025-07-30" }, { "name": "v0.5", "date": "2026-06-04" } ], "_topics": [ "diffusion", "kinetic-gas-theory", "lennard-jones-potential", "thermal-conductivity", "viscosity" ], "_stars": 0, "_contributors": [ { "user": "langenbergstefan", "count": 6, "uuid": 43132087 } ], "_userbio": { "uuid": 43132087, "type": "user", "name": "Stefan Langenberg" }, "_downloads": { "count": 137, "source": "https://cranlogs.r-pkg.org/downloads/total/last-month/chapensk" }, "_devurl": "https://github.com/langenbergstefan/chapensk", "_searchresults": 5, "_rbuild": "4.6.0", "_assets": [ "extra/chapensk.html", "extra/citation.cff", "extra/citation.html", "extra/citation.json", "extra/citation.txt", "extra/contents.json", "extra/readme.html", "extra/readme.md", "manual.pdf" ], "_homeurl": "https://github.com/langenbergstefan/chapensk", "_realowner": "langenbergstefan", "_cranurl": true, "_releases": [ { "version": "0.4", "date": "2025-08-01" } ], "_exports": [ "CollisionIntegral", "Gas", "pkg.env" ], "_datasets": [ { "name": "binary_diffusion", "title": "Binary gas phase diffusion coefficients of methane, ethane, propane and butane in helium and nitrogen; 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