Using CFD simulations with BIM HVACTool enables precise analysis of external wind effects around buildings. By leveraging OpenFOAM and advanced meshing techniques, wind flow patterns, pressure distributions, and turbulence intensities can be accurately modeled. This helps assess wind comfort, identify zones of high wind exposure, and optimize building and site designs for better performance and occupant safety. BIM HVACTool streamlines the integration of 3D models, ensuring efficient and detailed external wind analysis for sustainable and efficient architectural solutions.