Multiscale modelling for better hygrothermal prediction of porous building materials
The aim of this work is to understand the influence of the microstructuralgeometric parameters of porous building materials on the mechanisms of coupled heat, air and moisture transfers, in order to predict behavior of the building to control and improve it in its durability. For this a multi-scale...
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Series: | MATEC Web of Conferences |
Online Access: | https://doi.org/10.1051/matecconf/201714902005 |
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doaj-320d267563da486bab7137801ea0a9af2021-04-02T15:00:04ZengEDP SciencesMATEC Web of Conferences2261-236X2018-01-011490200510.1051/matecconf/201714902005matecconf_cmss2018_02005Multiscale modelling for better hygrothermal prediction of porous building materialsBelarbi RafikBennai FaresFerroukhi Mohammed YacineEl Hachem ChadyAbahri KamiliaThe aim of this work is to understand the influence of the microstructuralgeometric parameters of porous building materials on the mechanisms of coupled heat, air and moisture transfers, in order to predict behavior of the building to control and improve it in its durability. For this a multi-scale approach is implemented. It consists of mastering the dominant physical phenomena and their interactions on the microscopic scale. Followed by a dual-scale modelling, microscopic-macroscopic, of coupled heat, air and moisture transfers that takes into account the intrinsic properties and microstructural topology of the material using X-ray tomography combined with the correlation of 3D images were undertaken. In fact, the hygromorphicbehavior under hydric solicitations was considered. In this context, a model of coupled heat, air and moisture transfer in porous building materials was developed using the periodic homogenization technique. These informations were subsequently implemented in a dynamic computation simulation that model the hygrothermalbehaviourof material at the scale of the envelopes and indoor air quality of building. Results reveals that is essential to consider the local behaviors of materials, but also to be able to measure and quantify the evolution of its properties on a macroscopic scale from the youngest age of the material. In addition, comparisons between experimental and numerical temperature and relative humidity profilesin multilayers wall and in building envelopes were undertaken. Good agreements were observed.https://doi.org/10.1051/matecconf/201714902005 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Belarbi Rafik Bennai Fares Ferroukhi Mohammed Yacine El Hachem Chady Abahri Kamilia |
spellingShingle |
Belarbi Rafik Bennai Fares Ferroukhi Mohammed Yacine El Hachem Chady Abahri Kamilia Multiscale modelling for better hygrothermal prediction of porous building materials MATEC Web of Conferences |
author_facet |
Belarbi Rafik Bennai Fares Ferroukhi Mohammed Yacine El Hachem Chady Abahri Kamilia |
author_sort |
Belarbi Rafik |
title |
Multiscale modelling for better hygrothermal prediction of porous building materials |
title_short |
Multiscale modelling for better hygrothermal prediction of porous building materials |
title_full |
Multiscale modelling for better hygrothermal prediction of porous building materials |
title_fullStr |
Multiscale modelling for better hygrothermal prediction of porous building materials |
title_full_unstemmed |
Multiscale modelling for better hygrothermal prediction of porous building materials |
title_sort |
multiscale modelling for better hygrothermal prediction of porous building materials |
publisher |
EDP Sciences |
series |
MATEC Web of Conferences |
issn |
2261-236X |
publishDate |
2018-01-01 |
description |
The aim of this work is to understand the influence of the microstructuralgeometric parameters of porous building materials on the mechanisms of coupled heat, air and moisture transfers, in order to predict behavior of the building to control and improve it in its durability. For this a multi-scale approach is implemented. It consists of mastering the dominant physical phenomena and their interactions on the microscopic scale. Followed by a dual-scale modelling, microscopic-macroscopic, of coupled heat, air and moisture transfers that takes into account the intrinsic properties and microstructural topology of the material using X-ray tomography combined with the correlation of 3D images were undertaken. In fact, the hygromorphicbehavior under hydric solicitations was considered. In this context, a model of coupled heat, air and moisture transfer in porous building materials was developed using the periodic homogenization technique. These informations were subsequently implemented in a dynamic computation simulation that model the hygrothermalbehaviourof material at the scale of the envelopes and indoor air quality of building. Results reveals that is essential to consider the local behaviors of materials, but also to be able to measure and quantify the evolution of its properties on a macroscopic scale from the youngest age of the material. In addition, comparisons between experimental and numerical temperature and relative humidity profilesin multilayers wall and in building envelopes were undertaken. Good agreements were observed. |
url |
https://doi.org/10.1051/matecconf/201714902005 |
work_keys_str_mv |
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1721560788174372864 |