ANALYTICAL AND NUMERICAL STUDY OF A MIXED THERMAL WALL CONTAINING PLASTERBOARD AND BABASSU PLANT FIBER

Abstract

In this study, concepts of thermal conductivity and heat transfer applied to thermal walls were used, exploring the fact that thermal conductivity varies from material to material, thus providing an opening in the range of studies in the area of mathematical and numerical analysis of this variation. For this, the project presents the development of a code in MATLAB, applying the MDF- finite difference method in the explicit model, starting from the discretization of the thermal heat diffusion equation, where the simulations were carried out from data obtained from the thermophysical properties of existing materials in the literature, as well as from the data obtained experimentally from another parallel study to this one,  where the thermal conductivities and specific mass of the gypsum boards with different additions of babassu fiber biomass were used. The analyses were concentrated to evaluate the effects on the variation of the percentage of biomass added to the plasterboards, wall thickness, color of the paint of the external wall, in addition to analyzing and comparing the efficiency of walls made with different types of materials. With the results of this study, we intend to contribute with another construction alternative, emphasizing the thermal aspect.

DOI: https://doi.org/10.56238/sevened2025.011-004