Analysis of coupled heat and moisture transfer in masonry structures

Details Analysis of coupled heat and moisture transfer in masonry structures Analysis of coupled heat and moisture transfer in masonry structures

2008-04-22

arxiv.org/abs/0804.3554v1

Physics

Condensed Matter

Materials Science

23 pages, 11 figures

Scientific paper

10.1617/s11527-008-9450-2

Evaluation of effective or macroscopic coefficients of thermal conductivity under coupled heat and moisture transfer is presented. The paper first gives a detailed summary on the solution of a simple steady state heat conduction problem with an emphasis on various types of boundary conditions applied to the representative volume element -- a periodic unit cell. Since the results essentially suggest no superiority of any type of boundary conditions, the paper proceeds with the coupled nonlinear heat and moisture problem subjecting the selected representative volume element to the prescribed macroscopically uniform heat flux. This allows for a direct use of the academic or commercially available codes. Here, the presented results are derived with the help of the SIFEL (SIimple Finite Elements) system.

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