Identification of physical properties for highly porous fibrous material by means of statistical modeling techniques

Аuthors

Alifanov O. M.^*, Cherepanov V. V.^**

Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia

*e-mail: o.alifanov@yandex.ru
**e-mail: vvcherepanov@yandex.ru

Abstract

A statistical mathematical model is developed for highly porous fibrous composite material. It is shown that the model allows to compute such effective parameters of the material as conductive and radiation thermal conductivity, energy accommodation coefficient, complex index of refraction, scattering indicatrix, coefficients of dissipation and absorption for radiation etc. These material features are very resource-intensive to obtain appropriate data experimentally because of their values are defined through processes with essentially local and spectral nature. These values are extracted basing on the proposed approach both from direct simulation results and from solution of inverse problems.

Keywords:

highly porous materials; thermo-physical properties; high-precision model