A complex procedure has been proposed, which allows determining and predicting a significant part of the physical properties of heat-shielding highly porous materials. It is based on the combination of experiment, statistical methods of mathematical modeling, methods of solving the problem of radiation transfer, and methods of identifying mathematical models in solving pertinent inverse problems. Apart from decreasing expenditures, this approach markedly expands the capabilities of experimental methods. It allows studying and predicting components of the thermal conductivity, energy accommodation coefficient, complex refractive index and dielectric constant, scattering indicatrix, etc. As an element of the proposed approach, an original method of numerical solution of radiation transfer in a heterogeneous plane layer has been described. The results can be used for developing new materials and nondestructive methods of control and diagnostics, designing thermal-protection systems, etc.
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Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 83, No. 4, pp. 720–732, July–August, 2010.
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Alifanov, O.M., Cherepanov, V.V. Identification of models and prediction of physical properties of highly porous heat-shielding materials. J Eng Phys Thermophy 83, 770–782 (2010). https://doi.org/10.1007/s10891-010-0396-1
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DOI: https://doi.org/10.1007/s10891-010-0396-1