Paper Conference

Proceedings of Building Simulation 2021: 17th Conference of IBPSA


Development of an urban microclimate model to assess the air temperature field during the summer period

Julie Soriano 1,2, Lucie Merlier 1, Damien David 1, Frédéric Kuznik 1, Lionel Soulhac 2
1 Univ Lyon, CNRS, INSA-Lyon, Université Claude Bernard Lyon 1, CETHIL UMR5008, F-69621, Villeurbanne, France
2 Laboratoire de Mécanique des Fluides et d’Acoustique UMR CNRS 5509, École Centrale de Lyon, Université Claude Bernard Lyon 1, INSA Lyon, 69134 Écully Cedex, France

Abstract: Modelling the Urban Heat Island (UHI) helps to provide accurate mitigation and adaptation strategies and will be increasingly needed with the growing urbanisation. This article introduces a microclimate model designed to assess the UHI spatial distribution over a summer period with limited computing ressources. The model takes as input usual airport weather data and predicts urban climatic variables using a simplified but map-based network of street canyons interacting at intersections, with heat advection above roof level. As a starting point, this contribution presents the thermal street model and meteorological preprocessing of weather data. Predictions are then compared to observations.
Keywords: Urban microclimate model, Urban heat island, Street canyon
Pages: 744 - 751