In this paper, a novel approach was developed to generate CFD models at the community-level by integrating building information modeling (BIM) and geographical information systems (GIS) to automate the generation of a high-resolution 3-D community model to be employed as an input for a digital wind tunnel using RWIND.
RFEM and RSTAB provide the option to "Enable CAD/BIM model" in the model's General Data dialog box, "Options" tab. In addition to creating a model as usual, this CAD/BIM model allows you to import, organize, and transform IFC, STEP, and IGES files.