3D heat diffusion modeling in defected multilayered media for IRT applications in building elements

Abstract

This paper presents a numerical model to simulate heat transfer in layered media looking to contribute to the interpretation of thermographic results obtained in building envelope inspections. 3D heat diffusion by conduction in defected multilayered media is modeled using a formulation of the Boundary Element Method (BEM) in the frequency domain incorporating Green's functions. The defect is a 3D null thickness inclusion. A TBEM formulation is used in order to handle the null thickness. The present paper presents a brief selection of preliminary results obtained.