Effect of soot shape on soot radiation

Shuncheng Lee, C. L. Tien

Research output: Journal article publicationJournal articleAcademic researchpeer-review

26 Citations (Scopus)

Abstract

It is increasingly recognized that soot particles play an important role in the radiative heat transfer from flames and smoke. After their formation, these minute particles usually conglomerate into different forms, with the limiting shapes being the spheres and long chains which can be modeled as infinite cylinders. The present work analyzes the effect of soot shape on soot radiation. The spectral extinction coefficient of spheres, being lower than that of the cylindrical particles, falls off rapidly in the near i.r. The shape effect on soot radiation is found to be more pronounced at low temperatures than at high temperatures. In flame radiation calculations the radiative contribution of the various conglomerated soot shapes can be properly accounted for by assuming spherical and polydisperse soot particles. Based on the extinction characteristics of the particles, an experimental method for determining the amount of spherical and cylindrical particles in a soot cloud is suggested.
Original languageEnglish
Pages (from-to)259-265
Number of pages7
JournalJournal of Quantitative Spectroscopy and Radiative Transfer
Volume29
Issue number3
DOIs
Publication statusPublished - 1 Jan 1983
Externally publishedYes

ASJC Scopus subject areas

  • Radiation
  • Atomic and Molecular Physics, and Optics
  • Spectroscopy

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