{"@type": "dcat:Dataset", "accessLevel": "public", "accrualPeriodicity": "irregular", "bureauCode": ["006:55"], "contactPoint": {"fn": "Ian Bell", "hasEmail": "mailto:ian.bell@nist.gov"}, "description": "This record includes the C++ files used to generate superancillary equations (sets of Chebyshev expansions for the co-existing thermodynamic data) for the multiparameter EOS included in NIST REFPROP 10.0. The calculations in C++ are done in extended precision and the Chebyshev expansions are stored in double precision. The python scripts are used to post-process the generated sets of Chebyshev expansions. The advantage of this methodology is that the phase equilibrium calculations can be entirely avoided, resulting a computational speedup on the order of a factor of hundreds of times, without sacrificing any accuracy,Additional information is available in the README file.The working code is at https://github.com/usnistgov/fastchebpure", "distribution": [{"accessURL": "https://github.com/usnistgov/fastchebpure", "title": "fastchebpure GitHub"}, {"downloadURL": "https://data.nist.gov/od/ds/mds2-3147/README.md", "mediaType": "text/markdown", "title": "README"}, {"downloadURL": "https://data.nist.gov/od/ds/mds2-3147/fastchebpure.zip", "mediaType": "application/zip", "title": "A compressed archive of the files"}], "identifier": "ark:/88434/mds2-3147", "issued": "2024-02-27", "keyword": ["Chebyshev expansions", "equations of state", "function approximation", "phase equilibria"], "landingPage": "https://data.nist.gov/od/id/mds2-3147", "language": ["en"], "license": "https://www.nist.gov/open/license", "modified": "2024-01-19 00:00:00", "programCode": ["006:045"], "publisher": {"@type": "org:Organization", "name": "National Institute of Standards and Technology"}, "theme": ["Chemistry", "Mathematics and Statistics"], "title": "Code to accompany \"Superancillary Equations for the Multiparameter Equations of State in REFPROP 10.0\""}