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Titolo:
Automatic implementation of thermodynamic models using computer algebra
Autore:
Castier, M;
Indirizzi:
Univ Fed Rio de Janeiro, Escola Quim, BR-21949900 Rio De Janeiro, Brazil Univ Fed Rio de Janeiro Rio De Janeiro Brazil BR-21949900 BCeiro, Brazil
Titolo Testata:
COMPUTERS & CHEMICAL ENGINEERING
fascicolo: 9, volume: 23, anno: 1999,
pagine: 1229 - 1245
SICI:
0098-1354(19991101)23:9<1229:AIOTMU>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
ISOTHERMAL FLASH PROBLEM; SYSTEMS;
Keywords:
Thermath; Mathematica (R); equations of state; thermodynamic models;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
21
Recensione:
Indirizzi per estratti:
Indirizzo: Castier, M Univ Fed Rio de Janeiro, Escola Quim, CP 68542, BR-21949900 RioDe Janeiro, Brazil Univ Fed Rio de Janeiro CP 68542 Rio De Janeiro BrazilBR-21949900 BC
Citazione:
M. Castier, "Automatic implementation of thermodynamic models using computer algebra", COMPUT CH E, 23(9), 1999, pp. 1229-1245

Abstract

A new package, Thermath, for the automatic implementation of thermodynamicmodels was developed in the Mathematica(R) programming language. Starting from an excess Gibbs free energy (G(E)) model or an equation of state (EOS), Thermath can be used to derive expressions for several thermodynamic properties and to analyze the structure of these expressions, generating a codethat implements them in a computer language (Fortran77 is used in this paper). Using the package, procedures that implement properties derived from commonly used G(E) models could be rapidly generated. For EOSs, two situations occurred. Properties from simple EOSs could be readily derived and implemented. For more complex EOS, lengthy expressions may result, and their analysis can be very demanding in terms of computer time. To overcome this difficulty, a strategy to split this problem in tasks of feasible computational demand is presented. Although the applications of this paper deal with the implementation of thermodynamic models, most of the procedures developed here can possibly be used to implement models in other fields of science and engineering. (C) 1999 Elsevier Science Ltd. All rights reserved.

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Documento generato il 16/07/20 alle ore 05:16:25