New methods for calculating the dew/bubble curves of classical model fluids |
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Authors: | J. M. Kincaid K. B. Shon G. Fescos |
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Affiliation: | (1) Department of Mechanical Engineering, SUNY at Stony Brook, 11794 Stony Brook, New York |
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Abstract: | We describe two new methods for locating the dew/bubble curves of fluids. One is a numerical method and the other an analytical method based on the use of series expansions. The utility of these two methods is illustrated by application to a simple one-component fluid model and to several model polydisperse fluids. The numerical method is based on a new geometric representation of the equilibrium conditions-similar in spirit to the geometric representations often used for solving the equilibrium conditions of pure fluids. Our calculations show that the series-expansion technique can be quite effective at producing accurate representations of the phase boundaries. |
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Keywords: | Coexistence curve critical point dew/bubble curve phase transitions polydisperse series expansions |
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