A possible radiative model for micronic carbonaceous particle sizing based on time-resolved laser-induced incandescence

Allouis C. G., Rosano F., Beretta F., D'Alessio A.

MEASUREMENT SCIENCE AND TECHNOLOGY, cilt.13, sa.3, ss.401-410, 2002 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 13 Sayı: 3
  • Basım Tarihi: 2002
  • Doi Numarası: 10.1088/0957-0233/13/3/323
  • Dergi Adı: MEASUREMENT SCIENCE AND TECHNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.401-410
  • Orta Doğu Teknik Üniversitesi Adresli: Hayır

Özet

A numerical model of time-resolved laser-induced incandescence (TIRE-LII) for different kinds of large carbonaceous particle is developed in this paper. Theoretical temporal LII signals were computed for the following classes of particles: soot, the well known hollow particles called cenospheres (tens of microns) and full carbonaceous particles called by analogy pleospheres (a few microns), pleo- from the Greek pleos (solid). The large carbonaceous particles have a characteristic time for internal gradient dissipation much longer than soot, thus a temperature profile establishes inside them. On the basis of these observations, a spatial time-dependent model for cenospheres and pleospheres was considered, i.e. a system of partial differential equations based on mass and energy balances.