Mateusz BOGDAN, AREP L'hypercube, France
The aim of the present work is first to introduce a new simulation workflow for the evaluation of surface temperatures and comfort levels in various outdoor urban contexts. Based upon a case study around Strasbourg train station (France), this work attempt to generalize some results into guidelines for a more sustainable urban development and Urban Heat Island (UHI) mitigations.
Composed of various state-of-the-art and open-source simulations tools, the presented approach is the results of a continuous effort to increase the time span, the reliability and execution time of urban microclimate studies (known limitations of existing software’s). By changing the couplings between the tools and involved physics, a simplified approach is yielded with a weak coupling between the temperatures and airflow interactions, which allows us to simulate a complete year in less than a day of computations. In addition, the workflow allows to use both a typical meteorological year, in the current climate, or - with the help of meteorological scenarios (IPCC RCP[1]) – future ones, up to 2100.
Finally, the case study focuses of several urban layout assessments (ongoing work), with a comparison of the resulting comfort levels. Some general guidelines are then drawn to help keep the forecourts cool within heating cities, and thus provide some mitigation to the Urban Heat Island Effect.
Mots clés : Urban Heat Island|Cooling Reservoir|Urban Simulation|Comfort|Meteorological data
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