Twu-Sim-Tassone equation of state: Difference between revisions
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Revision as of 00:33, 5 November 2011
Twu, Sim and Tassone presented a cubic equation of state for accurate representation of hydrocarbon that has become known as the Twu-Sim-Tassone or TST equation of state[1]. With a critical compressibility factor of 0.2962, it better represents many the compressibility of than the Redlich-Kwong, including the Soave modified version, and the Peng-Robinson equation of state and has been shown to better represent long chain hydrocarbons[2].
The equation follows the general cubic form resulting in the equation:
Where is the molar volume, and and are the attractive and repulsive parameters akin to those of the van Der Waals equation of state.