The efficiency of using digital models for predicting the thermal conductivity of wood-mineral composites

This paper addresses the problem of selecting the optimal composition of wood-mineral composites (WMC) using the COMSOL Multiphysics software complex. The experimental part describes the laboratory process of manufacturing such composites with the inclusion of magnesite and wood sawdust, and provides a comparative assessment of the traditional instrumental method for determining their thermal conductivity versus a method based on modern digital models. The high efficiency of using digital modeling of the composition and structure of a building composite for investigating the thermal conductive properties of WMC is proven. The paper confirms the hypothesis on the significant impact of the component ratio in the mixture on the thermal conductivity coefficient of WMC. The digital model of the composite's structure will significantly reduce labor costs and time for conducting such research in the future.