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RADIATIVE TRANSFER - VI. Proceedings of the 6th International Symposium on Radiative Transfer
June, 13-19, 2010, Antalya, Turkey

DOI: 10.1615/ICHMT.2010.RAD-6


ISBN Print: 978-1-56700-269-0

ISSN Online: 2642-5629

ISSN Flash Drive: 2642-5661

PREDICTION OF THERMAL RADIATIVE PROPERTIES IN POROUS MEDIA: A MONTE-CARLO RAY TRACING METHOD

pages 56-58
DOI: 10.1615/ICHMT.2010.RAD-6.530
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SINOPSIS

Knowledge of the thermal radiative properties of materials involved in industrial systems is crucial for dealing with energy balance. The evolution of computer performances opens today new perspectives in the development of predictive code aiming to accurately compute the radiative properties of a given industrial material from its 3D numerical image. In the other hand, predictive approaches appear insightful when experimental measurements cannot be easily performed (high pressure, high temperature, corrosive atmosphere, irradiative exposure…). In this work, a numerical tool has been implemented to reproduce the normal spectral emittance of porous media that can be measured by infrared emittance spectroscopy (3003000 K). The code takes into account the chemical composition and the 3D numerical image of the heated sample. In particular, x-ray μ-tomography is used to provide such images. Then, from the analysis of the sample texture, a Monte Carlo ray tracing scheme is applied for the retrieval of the radiative properties. In this work, we discuss of this procedure and its use for the characterization of aluminium foam (ERG Al 20).

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