Paper Conference

Proceedings of Building Simulation 2017: 15th Conference of IBPSA


Parametric Study of Urban Microclimate Based on a Coupled Approach for CFD, Radiation, Wind-Driven Rain and Heat and Moisture Transport in Building Materials

Aytaç Kubilay1, Dominique Derome1, Jan Carmeliet1,2
1Laboratory for Multiscale Studies in Building Physics, Swiss Federal Laboratories for Materials Science and Technology (Empa), Dübendorf, Switzerland
2 Chair of Building Physics, Swiss Federal Institute of Technology ETHZ, Zurich, Switzerland

Abstract: Thermal and moisture capacities of different materials can influence the thermal comfort in urban areas significantly. This study presents a fully-integrated urban microclimate model, which considers the transport of heat and moisture in the air and in building materials, solving also for solar and thermal radiative exchange as well as wind and wind-driven rain. The proposed approach yields detailed analysis of the influence of different materials and meteorological conditions (wind, sun, rain) on the absorption and storage of heat and moisture in the built environment. The case study of the impact of rain deposition on an isolated threedimensional street canyon shows limited evaporative cooling potential for concrete compared to bare soil.
Pages: 1686 - 1693