Talk:Twu-Sim-Tassone equation of state: Difference between revisions
Carl McBride (talk | contribs) (Comment concerning a and b) |
Carl McBride (talk | contribs) m (Added an addendum) |
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Dear [[User:Josephrpeterson | Joseph]], | Dear [[User:Josephrpeterson | Joseph]], | ||
I have replaced the values that you added for <math>a</math> and <math>b</math> to be those found in the original publication (Eqs. 3 and 4 in [http://dx.doi.org/10.1016/S0378-3812(01)00663-X Chorng H. Twu, Wayne D. Sim and Vince Tassone "A versatile liquid activity model for SRK, PR and a new cubic equation-of-state TST", Fluid Phase Equilibria '''194-197''' pp. 385-399 (2002)]). The values that you inserted appear as Eqs. 3.3 and 3.4 in the Reference Guide of the [http://hpsweb.honeywell.com/Cultures/en-US/Products/ControlApplications/simulation/UniSimDesign/default.htm UniSim Clean Fuels Property Package]. Without having gone through the algebra, I shall err on the side of the caution and assume the values of Twu ''et al.'' are the correct ones. All the best, --[[User:Carl McBride | <b><FONT COLOR="#8B3A3A">Carl McBride</FONT></b>]] ([[User_talk:Carl_McBride |talk]]) 12:41, 7 November 2011 (CET) | I have replaced the values that you added for <math>a</math> and <math>b</math> to be those found in the original publication (Eqs. 3 and 4 in [http://dx.doi.org/10.1016/S0378-3812(01)00663-X Chorng H. Twu, Wayne D. Sim and Vince Tassone "A versatile liquid activity model for SRK, PR and a new cubic equation-of-state TST", Fluid Phase Equilibria '''194-197''' pp. 385-399 (2002)]). The values that you inserted appear as Eqs. 3.3 and 3.4 in the Reference Guide (June 2005 R350 Release) of the [http://hpsweb.honeywell.com/Cultures/en-US/Products/ControlApplications/simulation/UniSimDesign/default.htm UniSim Clean Fuels Property Package]. Without having gone through the algebra, I shall err on the side of the caution and assume the values of Twu ''et al.'' are the correct ones. All the best, --[[User:Carl McBride | <b><FONT COLOR="#8B3A3A">Carl McBride</FONT></b>]] ([[User_talk:Carl_McBride |talk]]) 12:41, 7 November 2011 (CET) | ||
Addendum: the prefactors of <math>a</math> (0.427481) and <math>b</math> (0.086641) appear to be close to those of the [[Redlich-Kwong equation of state]]. --[[User:Carl McBride | <b><FONT COLOR="#8B3A3A">Carl McBride</FONT></b>]] ([[User_talk:Carl_McBride |talk]]) 17:31, 7 November 2011 (CET) | |||
Latest revision as of 17:31, 7 November 2011
a and b[edit]
Dear Joseph,
I have replaced the values that you added for and to be those found in the original publication (Eqs. 3 and 4 in Chorng H. Twu, Wayne D. Sim and Vince Tassone "A versatile liquid activity model for SRK, PR and a new cubic equation-of-state TST", Fluid Phase Equilibria 194-197 pp. 385-399 (2002)). The values that you inserted appear as Eqs. 3.3 and 3.4 in the Reference Guide (June 2005 R350 Release) of the UniSim Clean Fuels Property Package. Without having gone through the algebra, I shall err on the side of the caution and assume the values of Twu et al. are the correct ones. All the best, -- Carl McBride (talk) 12:41, 7 November 2011 (CET)
Addendum: the prefactors of (0.427481) and (0.086641) appear to be close to those of the Redlich-Kwong equation of state. -- Carl McBride (talk) 17:31, 7 November 2011 (CET)