Influence of the soot property uncertainties in temperature and volume-fraction measurements by two-colour pyrometry (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• Influence of the soot property uncertainties in temperature and volume-fraction measurements by two-colour pyrometry (Articolo in rivista) (literal)

Anno

• 1994-01-01T00:00:00+01:00 (literal)

Alternative label

• di Stasio S., Massoli P. (1994)
  Influence of the soot property uncertainties in temperature and volume-fraction measurements by two-colour pyrometry
  in Measurement science & technology (Print)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• di Stasio S., Massoli P. (literal)

Pagina inizio

• 1453 (literal)

Pagina fine

• 1465 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 5 (literal)

Rivista

• Measurement science & technology (Rivista)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Istituto Motori, CNR, Napoli. (literal)

Titolo

• Influence of the soot property uncertainties in temperature and volume-fraction measurements by two-colour pyrometry (literal)

Abstract

• A sensitivity analysis of the two-colour pyrometry technique for calculation of soot temperature T and volume fraction fv is presented. Two different combustion environments are exemplified for high (fv approximately=10-5) and low (fv approximately=10-7) soot concentration regimes. The calculations are carried out taking into account particle shape, different expressions for monochromatic emissivity, optical property variations, size distribution of soot particles and a finite light-detection bandwidth. The results indicate which spectral range, for the choice of the (»1, »2) wavelengths employed in the emission measurements, and computing algorithm, for the reckoning of the T values, can be appropriated to guarantee a lower a priori uncertainty in the T and fv calculated values. Results stress the evidence that T and fv values are critically sensitive to the complex refractive index, m=n-ik, and that they are irrelevantly influenced by the probability distribution of particle size. The critical theoretical influence of the type of fuel, characterized by a different soot hydrogen/carbon ratio, upon the inferred fv values is assessed. Determinations of temperature values with (»1, »2) measurement wavelengths above 1.2 mu m is demonstrated to be invalidated by an uncertainty contribution of at least 20 K in the regime fv approximately=10-5 and 100 K in the regime fv approximately=10-7. (literal)

Prodotto di

• Institute for Research on Engines (IM) (Istituto)

Autore CNR

• STEFANO DI STASIO (Persona)
• PATRIZIO MASSOLI (Unità di personale interno)

Incoming links:

Prodotto

• Institute for Research on Engines (IM) (Istituto)

Autore CNR di

• STEFANO DI STASIO (Persona)
• PATRIZIO MASSOLI (Unità di personale interno)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Measurement science & technology (Rivista)