Numerical Modelling of Coupled Heat and Mass Transfer in Porous Materials: Application to Cinder Block Bricks  

作　　者：Benjamin Kiema Ousmane Coulibaly Xavier Chesneau Belkacem Zeghmati Benjamin Kiema;Ousmane Coulibaly;Xavier Chesneau;Belkacem Zeghmati(Laboratory of Environmental Physics and Chemistry (LPCE), Department of Physics, Joseph KI-ZERBO University, Ouagadougou, Burkina Faso;Laboratory of Modelling Pluridisciplinary and simulation (LAMPS), University of Perpignan Via Domitia, Perpignan, France)

机构地区：[1]Laboratory of Environmental Physics and Chemistry (LPCE), Department of Physics, Joseph KI-ZERBO University, Ouagadougou, Burkina Faso [2]Laboratory of Modelling Pluridisciplinary and simulation (LAMPS), University of Perpignan Via Domitia, Perpignan, France

出　　处：《Open Journal of Applied Sciences》2024年第9期2360-2373,共14页应用科学（英文）

摘　　要：In this work, we present numerical modelling of coupled heat and mass transfer within porous materials. Our study focuses on cinder block bricks generally used in building construction. The material is assumed to be placed in air. Moisture content and temperature have been chosen as the main transfer drivers and the equations governing these transfer drivers are based on the Luikov model. These equations are solved by an implicit finite difference scheme. A Fortran code associated with the Thomas algorithm was used to solve the equations. The results show that heat and mass transfer depend on the temperature of the air in contact with the material. As this air temperature rises, the temperature within the material increases, and more rapidly at the material surface. Also, thermal conductivity plays a very important role in the thermal conduction of building materials and influences heat and mass transfer in these materials. Materials with higher thermal conductivity diffuse more heat.In this work, we present numerical modelling of coupled heat and mass transfer within porous materials. Our study focuses on cinder block bricks generally used in building construction. The material is assumed to be placed in air. Moisture content and temperature have been chosen as the main transfer drivers and the equations governing these transfer drivers are based on the Luikov model. These equations are solved by an implicit finite difference scheme. A Fortran code associated with the Thomas algorithm was used to solve the equations. The results show that heat and mass transfer depend on the temperature of the air in contact with the material. As this air temperature rises, the temperature within the material increases, and more rapidly at the material surface. Also, thermal conductivity plays a very important role in the thermal conduction of building materials and influences heat and mass transfer in these materials. Materials with higher thermal conductivity diffuse more heat.

关 键 词：Numerical Modelling Coupled Transfer Building Materials Luikov Model Finite Differences 

分 类 号：TG1[金属学及工艺—金属学]