Mild Combustion in Homogeneous Charge Diffusion Ignition (HCDI) regime (Articolo in rivista)

Type
Label
  • Mild Combustion in Homogeneous Charge Diffusion Ignition (HCDI) regime (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.proci.2006.07.039 (literal)
Alternative label
  • de Joannon M.; Matarazzo A.; Sabia P.; Cavaliere A. (2007)
    Mild Combustion in Homogeneous Charge Diffusion Ignition (HCDI) regime
    in Proceedings of the Combustion Institute; the combustion institute, pittsburg (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • de Joannon M.; Matarazzo A.; Sabia P.; Cavaliere A. (literal)
Pagina inizio
  • 3409 (literal)
Pagina fine
  • 34016 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 31 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Istituto di Ricerche sulla Combustione - C.N.R., Naples, Italy Dipartimento di Ingegneria Chimica - Universita` Federico II, Naples, Italy (literal)
Titolo
  • Mild Combustion in Homogeneous Charge Diffusion Ignition (HCDI) regime (literal)
Abstract
  • The paper deals with a subcategory of Mild Combustion, which has been named Homogeneous Charge Diffusion Ignition (HCDI). It is analyzed through characterization of processes that take place in counter- diffusion configuration obtained by two opposed jets of the fresh air-fuel mixture and inert flow. The reac- tive field is modeled through a numerical code exploiting a detailed chemical kinetics scheme of O2/CH4/N2 system. Distributions of temperature and enthalpy as a function of the spatial coordinate and the mixture fraction are obtained for different values of the external parameters, i.e. the maximum temperature increase, the fresh mixture temperature, the inert gas mixture, the reference strain rate. They can be clas- sified in four main categories on the ground of location and broadness of the heat release and occur in con- tiguous exclusive regions of external parameters plots. Continuous transitions between regions are characterized by single solutions, whereas extinction/ignition discontinuous mechanisms are obtained in transition regions where double solutions are allowed. Unique characteristics, different from those of def- lagration, emerged for well-identified ranges of external parameters. They are related to a distribution of the heat release in a broad spatial and mixture fraction range. The operative conditions, for which such peculiar behavior occurs, are coincident with those where Mild Combustion is expected to take place on the ground of its ''a priori'' definition. (literal)
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