A 2D model for coupled heat, air, and moisture transfer through porous media in contact with air channels

Abstract

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An efficient numerical model for the simulation of coupled heat, air, and moisture transfer in porous media

“…Several recent works demonstrated that the air transfer should not be neglected to ensure the reliability of the model prediction . In Reference , the impact of air transfer was highlighted using an experimental approach. In References , a numerical model, based on a commercial software, was used to investigate the impact of air transfer on the heat and mass transfer in a porous material.…”

“…Several models from the literature are based on these approaches being constrained by these issues. In References , an implicit numerical model is proposed. To overcome the restrictions, authors simplify the boundary conditions or use linear coefficients .…”

“…In References , an implicit numerical model is proposed. To overcome the restrictions, authors simplify the boundary conditions or use linear coefficients . It is still an open challenge to propose efficient numerical models that reduce computational costs and maximize the accuracy of the solution.…”

Analysis of Non-Equilibrium and Equilibrium Models of Heat and Moisture Transfer in a Wet Porous Building Material

“…Results predicted with the proposed model were positively validated with experimental data. Belleudy et al [9] proposed a computational model capable of accounting for the transfer of moisture and heat across walls of the complex structure and for accompanying leakage air flow between components of the wall. In the model three main phenomena were accounted for, namely vapor diffusion and capillary suction in the porous medium and advective moist air transfer through thin channels.…”

“…A model of the moisture transfer in the clay brick was developed Allam et al [10]. This model was based on the same driving potentials used in [9].The extended model of moisture and heat transfer in homogeneous porous building materials was presented in [11,12]. It consisted of four transport equations, describing vapor, dry air, liquid moisture, and energy transport.…”