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The Monte Carlo Ray-Trace Method in Radiation Heat Transfer and Applied Optics

By
J. Robert Mahan
J. Robert Mahan
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ISBN:
9781119518518
No. of Pages:
280
Publisher:
ASME Press
Publication date:
2019

The assumption of diffuse emission and diffuse-specular reflection in gray enclosures is adequate for many applications encountered in engineering practice. This is especially true in the conceptual and preliminary design stages. However, final design and performance studies often require the use of bidirectional surface optical models restricted to a specified wavelength interval. In this chapter we develop the concept of the band-averaged spectral radiation distribution factor, which is the most general tool available for treating radiant exchange among surfaces, but first we learn through extended examples how to compose and use models to simulate the optical behavior of non-diffuse surfaces.

4.1
Bidirectional Spectral Surfaces
4.2
Principles Underlying a Practical Bidirectional Reflection Model
4.3
First Example: A Highly Absorptive Surface Whose Reflectivity is Strongly Specular
4.4
Second Example: A Highly Reflective Surface Whose Reflectivity is Strongly Diffuse
4.5
The Band-Averaged Spectral Radiation Distribution Factor
4.6
Use of the Band-Averaged Spectral Radiation Distribution Factor for the Case of Specified Surface Temperatures
4.7
Use of the Band-Averaged Spectral Radiation Distribution Factor for the Case of One or More Specified Surface Net Heat Fluxes
Problems
References
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