Community Analysis of Bifurcation Maps for the Data Based Analysis of Combustion in WSFRs Applied to Diluted Hydrogen Mixtures

  • He, Jiyun (Department of Chemistry, Capital Normal University)
  • Li, Yue (Department of Chemistry, Capital Normal University)
  • Ji, Lin (Department of Chemistry, Capital Normal University)
  • Acampora, Luigi (ENEA - TERIN)
  • Marra, Francesco Saverio (CNR - STEMS)

Please login to view abstract download link

The introduction of new fuels obtained from renewable sources is challenging for traditional approaches and methods used to study the behaviour of innovative fuels used alongside new combustion regimes. Novel approaches are required. This contribution illustrates the development of an automatic procedure aimed at the inspection of the very complex kinetic mechanisms and their interaction with the flow. To keep the simplicity required for the interpretation of the results and their validation, a relatively simple oxygen-hydrogen mixture is investigated by adopting a detailed reaction mechanism. It was shown [1-2] that even these simple mixtures reacting in a Jet Stirred Flow Reactor (JSFR), exhibit complex dynamic behaviour, showing transitions from low temperature to high temperature regimes interceded by an oscillating regime. The identification of the species/reactions sensitive to the change of the operating conditions was, already for this simple configuration, a challenging task for a manual inspection of the single reactions. It could reveal prohibitive with kinetic mechanisms of hundreds of species and thousands of reactions. Therefore, it is proposed the employment of an automatic procedure for the recognition of groups of species having similar behaviour during the evolution of the kinetics [3], coupled with the continuation analysis that allows the identification of the regime transitions while changing the system parameters [4]. This procedure has been found effective in detecting the species, and thus the reactions, responsible for the regime transitions observed in the experiments.