Optimized skeletal models of butane combustion

Y. X. Xin, D. Sheen, H. Wang, Chung King Law

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Skeletal reaction models for n-butane and iso-butane combustion are derived from the detailed gas phase chemistry model of USC Mech II through directed relation graph (DRG) and DRG aided sensitivity analysis (DRGASA) methods. The skeletal models generated from various combustion systems, e.g. auto-ignitions versus premixed flames, n-butane versus i-butane, are compared, and analyzed based on the temperature and species profiles during ignition and within the flames. The reduced models are further optimized through the method of uncertainty minimization by polynomial chaos expansion (MUM-PCE) to enhance model performances. The uncertainty of the optimized model is quantified by the spectral expansion technique, exploring the relationship between the model size and uncertainty.

Original languageEnglish (US)
Title of host publication8th US National Combustion Meeting 2013
PublisherWestern States Section/Combustion Institute
Number of pages18
ISBN (Electronic)9781627488426
StatePublished - 2013
Event8th US National Combustion Meeting 2013 - Park City, United States
Duration: May 19 2013May 22 2013

Publication series

Name8th US National Combustion Meeting 2013


Other8th US National Combustion Meeting 2013
Country/TerritoryUnited States
CityPark City

All Science Journal Classification (ASJC) codes

  • General Chemical Engineering
  • Mechanical Engineering
  • Physical and Theoretical Chemistry


  • Model optimization
  • Model reduction
  • Uncertainty quantification


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