Interference effects on scattering by parallel fibers at normal incidence

Susan M. White, Sunil Kumar

Research output: Contribution to journalArticle

Abstract

This paper examines the radiative heat transfer through fibrous materials, focusing on the interactions between the scattered radiation from individual parallel fibers. A normally incident plane electromagnetic wave is considered, and different representative geometries are analyzed theoretically. Experimental results are presented for a specific case corresponding to fibers in one plane. The light-scattering characteristics of a single long fiber depend only on the size parameter and on the material optical constants. When multiple fibers are spaced closely together, the additional mechanism of interference between the scattered waves influences the scattering characteristics of the fiber assembly as a whole. Previous studies of radiative transport through fibrous media have ignored these effects. In this study analytical models are developed for obtaining the radiative scattering characteristics of fibrous media where the mechanism of interference is accounted for. The results indicate that interference decreases the scattering efficiency of fibrous media containing a large number of randomly positioned fibers.

Original languageEnglish (US)
Pages (from-to)305-310
Number of pages6
JournalJournal of Thermophysics and Heat Transfer
Volume4
Issue number3
StatePublished - Jul 1990

Fingerprint

incidence
Scattering
interference
fibers
Fibers
scattering
Optical constants
Radiative transfer
radiative heat transfer
Light scattering
Electromagnetic waves
optical materials
Analytical models
electromagnetic radiation
light scattering
Heat transfer
assembly
Radiation
Geometry
radiation

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Physical and Theoretical Chemistry
  • Mechanical Engineering

Cite this

Interference effects on scattering by parallel fibers at normal incidence. / White, Susan M.; Kumar, Sunil.

In: Journal of Thermophysics and Heat Transfer, Vol. 4, No. 3, 07.1990, p. 305-310.

Research output: Contribution to journalArticle

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