Urban heat islands in cities are becoming an increasing problem due to the growing world population, ongoing urbanization and the global temperature rise caused by climate change. Several products are already on the market and in research to simulate these complex climatic conditions and provide decision support for urban planners and architects. However, these are very complex to apply and require long computation times. Therefore, in this master thesis a coupling of several existing software solutions is presented, with which it is possible to perform urban microclimate simulations quickly and easily. The core software solutions used are ANSYS Discovery Live for CFD simulation and a software for solar potential analysis, created by the Chair of Geoinformatics of the TUM and Virtual City Systems. This is supported by the use of semantic 3D city models, as they serve as input geometries as well as for the storage of semantic information like solar irradiance and material properties. This concept was implemented to obtain a working prototype. With this prototype a test scenario in the city of Bremen was performed and the results were evaluated and further processed to be displayed in online 3D city model viewer. The functionality of this approach was proven, but there is still a need for research concerning the validation of the results.     «

Urban heat islands in cities are becoming an increasing problem due to the growing world population, ongoing urbanization and the global temperature rise caused by climate change. Several products are already on the market and in research to simulate these complex climatic conditions and provide decision support for urban planners and architects. However, these are very complex to apply and require long computation times. Therefore, in this master thesis a coupling of several existing soft...     »