Phase equilibrium calculations for semicontinuous mixtures subject to gravitational fields

Rogério O. Espósito, Marcelo Castier, Frederico W. Tavares

Research output: Contribution to journalArticle

2 Citations (Scopus)


A recently proposed algorithm for performing thermodynamic equilibrium calculations subject to the influence of the gravitational field is extended to semicontinuous mixtures. The characterization of the continuous families is done by a pseudocomponent discretization based on a convenient choice of orthogonal polynomials to sample the distribution function interval. Then, adequate quadrature points and weights are calculated. We present results for a family of hydrocarbons from C8 to C20 with 51 mol % of methane for one-phase, two-phase, three-phase, and near-critical systems. Our results show the validity of the procedure for simulations of deep reservoirs and high-pressure storage conditions, solving problems with a high number of independent variables.

Original languageEnglish
Pages (from-to)4415-4421
Number of pages7
JournalIndustrial and Engineering Chemistry Research
Issue number11
Publication statusPublished - Nov 2000
Externally publishedYes


ASJC Scopus subject areas

  • Polymers and Plastics
  • Environmental Science(all)
  • Chemical Engineering (miscellaneous)

Cite this