Laser excited emission and chemiluminescence from autoigniting spray (Articolo in rivista)

Type
Label
  • Laser excited emission and chemiluminescence from autoigniting spray (Articolo in rivista) (literal)
Anno
  • 2000-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1080/00102200008947287 (literal)
Alternative label
  • de Joannon, M., Ragucci, R., Cavaliere, A. (2000)
    Laser excited emission and chemiluminescence from autoigniting spray
    in Combustion science and technology; Taylor and Francis, Abingdon (Regno Unito)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • de Joannon, M., Ragucci, R., Cavaliere, A. (literal)
Pagina inizio
  • 129 (literal)
Pagina fine
  • 147 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 155 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 1 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Istituto di Ricerche sulla Combustione - C.N.R, Napoli, Italy Dipartimento di Ingegneria Chimica, Università Federico II (literal)
Titolo
  • Laser excited emission and chemiluminescence from autoigniting spray (literal)
Abstract
  • The work presented in this paper deals with the synchronous multiwavelength detection of thermal, chemiluminescent and laser-excited 0'0=266nm) emission from spray of a large saturated paraffin (tctradccane) in auto-igniting conditions. Two of these have been selected by varying oxygen molar fraction (0.13 and 0.21) of high pressure (2MPa), high temperature oxidant (900K) stream yielding non-sooting combustion. The main measured spectroscopic feature was an isolated broadband fluorescence signal detected around A.=330nm.This signal is here attributed to aldehyde functionality on the basis of both calibra- tion tests. performed on liquid aldehydes with the same optical set-up, and literature data relative to fluorescence and chemiluminescence measurements in simpler conditions. Furthermore. temporal evolution of this signal. in the conditions reported here. is consistent with two-step ignition kinetics of paraffins to which a large production of aldehydes and ketones is related. Chemiluminescence maximum, due to HCO and C2 radicals, is slightly delayed with respect to the fluorescence maximum and is in synchrony with a minimum of the aldehydic species fluorescence signal. These maxima and minima mark unambiguously the time interval in which combustion evolves in premixed and diffu- sion controlled conditions, when pyrolnic species formation occurs. (literal)
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