An approach to the construction of a mathematical model of the passage of a heat front through a sample of a heat-shielding material under conditions of an unsteady heat flow

Butakov V.V., Shavnev A.A., Lugovoy A.A., Varrik N.M., Babashov V.G.
Butakov V.V., Shavnev A.A., Lugovoy A.A., Varrik N.M., Babashov V.G. An approach to the construction of a mathematical model of the passage of a heat front through a sample of a heat-shielding material under conditions of an unsteady heat flow // Proceedings of VIAM. 2022. No. 6. DOI: 10.18577/2307-6046-2022-0-6-127-137. URL: https://test.viam.ru/en/journal/2022/6/11
Keywords
heat-shielding material, thermal conductivity coefficient, heat flux, highly porous material, mathematical model
Abstract

In this work, the principal possibility of quantifying the heat transfer coefficient of the material using a stand was tested, as well as the selection of experimental parameters to increase the reliability of the assessment of the thermal conductivity coefficient of the layered material. It is possible to use one part of the data array within one test to estimate the heat transfer coefficient of the material on its hot side, and when processing another part of the experimental data, to use the heat transfer coefficient to estimate the heat absorbed by the sample. The proposed estimation method is much simpler in terms of hardware compared to the classical calorimetric method.

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