Urban Buildings Generation and Modeling for Thermal and Energy Simulations – BIM-4-SIM

Due to its health, energy and economic consequences, the degradation of the quality of urban environments (thermal conditions, air quality, etc.) has become one of the major issues of urban development. To bring some solutions to this problem, physical modelling of the environment shows a great potential. However, the availability and the construction of urban models based on an analysis of geometric shapes is a big issue limiting the possible simulations and the quality of their results.

Due to the lack of availability of urban models, most of the current research in urban simulation uses simplified models built manually with existing databases (IGN BD Topo, Open Street Map, CityGML,...) by using specific 3D modellers. This construction process is time consuming and limits the possibilities of carrying out numerous simulations. It thus restricts the possibilities of simulation studies and the reproducibility of experimentations with different parameters.

Our goal in this project is to answer to these limitations through three scientific objectives: (1) define a method that allows to generate automatically 3D building models based on many different parameters; (2) propose several algorithms based on open data, crossing multiple sources, to extract in an automatic way the parameters required by our method of building generation; (3) implement dedicated model extraction algorithms that will be used as input of software for physical simulation; propose extractions at differents scale in order to improve the quality of physical simulations in terms of parameterization, reliability and results valorization towards society.