Computational modelling of the impact of solar irradiance on chemical degradation of painted wall hangings in an historic interior

Abstract

In this study Comsol Multiphysics is applied to simulate heat transfer with surface-to-surface radiation in the rear salon of a historic interior. Three walls in this room are covered with oil paintings on canvas. Currently, different degrees of chemical degradation can be observed on the wall hangings. This degradation may be attributed to temperature variations near the surface. The purpose of the Comsol model is to predict surface temperature and surface radiosity of the wall hangings based on the outdoor temperature, solar irradiation and building properties. The predicted thermal conditions can indicate possible scenarios that could have caused climate-induced chemical degradation of the paintings.

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