Analysis of parametric uncertainty propagation in detailed combustion chemistry

Matthew T. Reagan*, Habib N. Najm, Roger G. Ghanem, Omar Knio

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


A spectral formalism has been developed for the "non-intrusive" analysis of parametric uncertainty. Compared to conventional Monte Carlo analysis, this method quantifies the extent, dependence, and propagation of uncertainty through the model system and allows correlation of uncertainties in specific parameters to the resulting total uncertainty in product concentrations and flame structure. Analysis of OD and ID hydrogen-oxygen combustion demonstrates that known empirical uncertainties in model parameters may result in large uncertainties in the final output, and nonlinearities in system response behavior make the order of the analysis an important consideration.

Original languageEnglish (US)
Title of host publicationComputational Fluid and Solid Mechanics 2003
PublisherElsevier Inc.
Number of pages5
ISBN (Electronic)9780080529479
ISBN (Print)9780080440460
StatePublished - Jun 2 2003


  • Polynomial chaos
  • Reacting flow
  • Uncertainty
  • Uncertainty quantification

ASJC Scopus subject areas

  • Engineering(all)


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