Three schemes for determination of equilibrium states at prescribed temperature and pressure may be considered, namely, Gibbs function minimization, equilibrium constant formulation, and equating of forward and reverse rates.(1) The first two schemes are well known to be equivalent, “static equilibrium” formulations based on the Gibbs function minimization principle for a mixture at specified temperature and pressure. The third, a “dynamic equilibrium” scheme, is not of practical use, as it is essentially a limiting case of finite-rate kinetics based on infinite reaction time, and therefore has all of the difficulties associated with finite-rate chemistry solutions.


Gibbs Function Nonlinear Algebraic Equation Correction Equation Mole Number Correction Variable 
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    R. F. Anasoulis and H. MacDonald, A Study of Combustor Flow Computations and Comparison with Experiment, Report No. EPA–650/2–73–045, U.S. Environmental Protection Agency (1973).Google Scholar
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    S. Gordon and B. McBride, Computer Program for Calculation of Complex Chemical Equilibrium Compositions, NASA SP-273 (1971).Google Scholar
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    D. T. Pratt and J. Wormeck, CREK—A Computer Program for Calculation of Combustion Reaction Equilibrium and Kinetics in Laminar or Turbulent Flow, Report WSU-TEL-76–1, Washington State University (1976).Google Scholar

Copyright information

© Springer Science+Business Media New York 1979

Authors and Affiliations

  • David T. Pratt
    • 1
  1. 1.University of UtahSalt Lake CityUSA

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