Radiation from cavities with nonisothermal heat conducting walls

Ephraim M Sparrow, P. D. Kruger, R. P. Heinisch

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The radiant efflux from a cylindrical cavity having nonisothermal bounding surfaces is determined by solving a problem of combined radiation and conduction. The cavity may be visualized as a circular hole machined into the exposed face of a solid, with the solid being heated uniformly from behind. A two-dimensional temperature distribution is set up in the solid owing to radiative heat losses from the cavity and from the exposed face of the solid. A solution method is employed whereby the radiation and conduction problems are dealt with successively. Results are obtained, for parametric values of the cavity emittance and depth-radius ratio and of a group which fixes the axial temperature variation. The results indicate that the radiant efflux from the cavity increases with increasing values of the aforementioned parameters. The effect of the presence of the cavity is confined to a region of the solid whose depth, and radius are, respectively, twice and four times the depth and radius of the cavity.

Original languageEnglish (US)
Pages (from-to)15-20
Number of pages6
JournalJournal of Heat Transfer
Volume96
Issue number1
DOIs
StatePublished - Jan 1 1974

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Radiation
conduction
heat
cavities
radiation
efflux
radii
Heat losses
Temperature distribution
Hot Temperature
emittance
fixing
temperature distribution
Temperature
temperature

Cite this

Radiation from cavities with nonisothermal heat conducting walls. / Sparrow, Ephraim M; Kruger, P. D.; Heinisch, R. P.

In: Journal of Heat Transfer, Vol. 96, No. 1, 01.01.1974, p. 15-20.

Research output: Contribution to journalArticle

Sparrow, Ephraim M ; Kruger, P. D. ; Heinisch, R. P. / Radiation from cavities with nonisothermal heat conducting walls. In: Journal of Heat Transfer. 1974 ; Vol. 96, No. 1. pp. 15-20.
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