Author(s)

F. Branco, A. Tadeu & N. Simoes

Abstract

The Boundary Element Method (BEM) is used to evaluate steady state heat conduction across double brick walls separated by an insulation layer. The BEM is formulated to allow the use of multi-boundaries, making it possible to discretize the brick cavities. The method and expressions described are first implemented and validated by applying them to a simple one-dimensional conduction problem, for which the solution is calculated analytically. The BEM is subsequently applied to two different models: in the first, the wall is assumed to be a set of homogeneous layers, bonded together; in the second, the geometrical properties of the individual bricks and bonds are modelled. The temperature and distribution flow results for the two models are compared, making it possible

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