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Efficient high‐pressure state equations
Author(s) -
Harstad Kenneth G.,
Miller Richard S.,
Bellan Josette
Publication year - 1997
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690430624
Subject(s) - equation of state , bar (unit) , propane , methane , thermodynamics , heptane , methanol , state (computer science) , cubic function , high pressure , rocket (weapon) , mathematics , chemistry , materials science , mathematical analysis , physics , engineering , algorithm , organic chemistry , meteorology , aerospace engineering
A method is presented for a relatively accurate, noniterative, computationally efficient calculation of high‐pressure fluid‐mixture equations of state, especially targeted to gas turbines and rocket engines. Pressures above 1 bar and temperatures above 100 K are addressed. The method is based on curve fitting an effective reference state relative to departure functions formed using the Peng‐Robinson cubic state equation. Fit parameters for H 2 , O 2 , N 2 , propane, methane, n‐heptane, and methanol are given.