Simple global reduction technique based on decomposition approach

V. Bykov, V. Gol'dshtein, U. Maas

Research output: Contribution to journalArticlepeer-review

46 Scopus citations


Large and complex (nonlinear) models of chemical kinetics are one of the major obstacles in simulations of reacting flows. In the present work a new approach for an automatic reduction of chemical kinetics models, the so-called Global Quasi-Linearization (GQL) method is presented. The method is similar to the ILDM and CSP approaches in the sense that it is based on a decomposition into fast/slow motions and on slow invariant manifolds, but has a global character which allows us to overcome difficulties with the application of slow invariant manifolds and significantly simplifies the construction procedure for approximation of the slow invariant system manifold. The method is implemented within the standard ILDM method and applied to a number of model examples and to a meaningful combustion chemistry model.

Original languageEnglish
Pages (from-to)389-405
Number of pages17
JournalCombustion Theory and Modelling
Issue number2
StatePublished - 1 Apr 2008


  • CSP
  • Chemical kinetics
  • ILDM
  • Invariant manifolds
  • Model reduction

ASJC Scopus subject areas

  • Chemistry (all)
  • Chemical Engineering (all)
  • Modeling and Simulation
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Physics and Astronomy (all)


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