Journal: Journal of Building Physics

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SAGE

Journal Volumes

ISSN

1744-2591
1744-2583

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2010 - 201952020 - 20243
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Publications 1 - 8 of 8
  • Masonry brick-cement mortar interface resistance to water transport determined with neutron radiography and numerical modeling
    Item type: Journal Article
    Zhou, Xiaohai; Desmarais, Guylaine; Vontobel, Peter; et al. (2020)
    Journal of Building Physics
    Masonry is one of the most common building envelope systems in the world, providing an excellent water protection solution against rain. Water transport in masonry walls composed of bricks and mortar joints can be strongly affected by the nature of the interface between brick and mortar. In this study, two-dimensional water uptake experiments and numerical simulations are performed to study the effect of interface resistance on moisture transport in masonry samples with horizontal and vertical interfaces. Neutron radiography is used to document the time- and space-resolved moisture content distribution in different masonry samples. In the simulation of moisture transport, an interface resistance models the imperfect contact between brick and mortar. A good agreement between measured and simulated moisture content distribution is observed for different masonry samples. Moisture transport in masonry could be strongly affected by the interface resistance, when interface is in proximity to moisture source. The orientation, horizontal or vertical, of the interface between brick and mortar does not have an influence on the value of the interface resistance. However, the interface resistance depends on the capillary pressure at the interface. In the range of capillary moisture transport, a lower capillary pressure at the interface will lead to a larger interface resistance.
  • Water uptake in clay brick at different temperatures: Experiments and numerical simulations
    Item type: Journal Article
    Guizzardi, Michela; Derome, Dominique; Carmeliet, Jan (2016)
    Journal of Building Physics
  • Characterizing saline uptake and salt distributions in porous limestone with neutron radiography and X-ray micro-tomography
    Item type: Journal Article
    Derluyn, Hannelore; Griffa, Michele; Mannes, David; et al. (2013)
    Journal of Building Physics
  • The role of water in the behavior of wood
    Item type: Journal Article
    Derome, Dominique; Rafsanjani, Ahmad; Hering, Stefan; et al. (2013)
    Journal of Building Physics
  • Performances of highly insulated compact zinc roofs under a humid-moderate climate
    Item type: Journal Article
    Zheng, R.; Janssens, A.; Carmeliet, J.; et al. (2010)
    Journal of Building Physics
  • Improved mesoscopic meteorological modeling of the urban climate for building physics applications
    Item type: Journal Article
    Strebel, Dominik André; Derome, Dominique; Kubilay, Aytaç; et al. (2024)
    Journal of Building Physics
    Meteorological mesoscale models with different urban parametrization are used to predict the local urban climate at 250 m resolution. The authors propose a hybrid machine learning approach to improve the mesoscale prediction accuracy using measured air temperature data from a sensor network and remove simulation bias. The simulation of the urban climate of Zurich during a hot summer is used as case study showing the improvements of the simulation accuracy. Based on the hybrid model results, a cumulative heat exposure index is proposed to map local hotspots in the city and assess the difference of cooling loads between rural and urban environments. Furthermore, intra-urban microclimatic differences of a typical mid-latitude city are explored to highlight the benefits of detailed simulations for building physics purposes.
  • Performances of highly insulated compact zinc roofs under a humid-moderate climate
    Item type: Journal Article
    Zheng, R.; Janssens, A.; Carmeliet, J.; et al. (2011)
    Journal of Building Physics
  • Smart wetting of permeable pavements as an evaporative-cooling measure for improving the urban climate during heat waves
    Item type: Conference Paper
    Kubilay, Aytaç; Ferrari, Andrea; Derome, Dominique; et al. (2020)
    Journal of Building Physics
    An urban microclimate model is used to design a smart wetting protocol for multilayer street pavements in order to maximize the evaporative cooling effect as a mitigation measure for thermal discomfort during heat waves. The microclimate model is built upon a computational fluid dynamics (CFD) model for solving the turbulent air, heat and moisture flow in the air domain of a street canyon. The CFD model is coupled to a model for heat and moisture transport in porous urban materials and to a radiative exchange model, determining the net solar and thermal radiation on each urban surface. A two-layer pavement system, previously optimized for maximal evaporative cooling applying the principles of capillary pumping and capillary break, is considered to design a smart wetting protocol answering the questions “when,” “how much,” and “how long” a pavement should be artificially wetted. It was found for the current optimized pavement solutions that a daily amount of 6 mm wetting over 10 min in the morning, preferentially between 8:00 and 10:00, guarantees a maximal evaporative cooling for 24 h during a heat wave.
Publications 1 - 8 of 8