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Configuration factors for radiation transfer between diffuse surfaces

DOI: 10.1615/thermopedia.000068

CONFIGURATION FACTORS FOR RADIATION TRANSFER BETWEEN DIFFUSE SURFACES

John R. Howell

1. INTRODUCTION

Configuration factors (also often called shape factors, form factors, view factors, or angle factors) define the fraction of uniformly distributed radiative energy leaving diffuse surface j that is incident on a second surface k. The configuration factor from a differential area element dAj to a second element dAk is denoted by dFdj-dk. In general, such a factor is given by

(1)

where the quantities on the right-hand side are shown in Fig. 1.

Defining geometry for configuration factor.

Figure 1. Defining geometry for configuration factor.

The notation adopted here is that used in Siegel and Howell (2010). The differential form dF for element-to-element configuration factors is used to maintain the differential order of the equation to agree with the differential area on the right-hand side.

Equation (1) can a ...

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References

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Número de vistos: 30646 Artículo añadido: 7 September 2010 Último artículo modificado: 24 May 2011 © Copyright 2010-2020 Volver arriba