The article describes a one-dimensional model of heat and moisture transfer in a building wall constructed from several layers of different porous materials. The model consists of a system of diffusion equations for heat, water vapor, and liquid water allowing for condensation of vapor and evaporation of water. An algorithm and a computer program are developed for numerical solution of the model equations by the finite-difference method. Two examples are given calculating the heat and moisture regime of constructions over a 50-year period with allowance for seasonal changes of temperature and air humidity.
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Translated from Prikladnaya Matematika i Informatika, No. 47, 2014, pp. 43–59.
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Vasil’ev, G.P., Lichman, V.A., Peskov, N.V. et al. Numerical Modeling of Heat and Moisture Diffusion in Porous Materials. Comput Math Model 26, 501–513 (2015). https://doi.org/10.1007/s10598-015-9287-9
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DOI: https://doi.org/10.1007/s10598-015-9287-9