Paper Conference

Proceedings of Building Simulation 2021: 17th Conference of IBPSA


Automatic generation of second level space boundary geometry from IFC models

Eric Fichter, Veronika Richter, Jérôme Frisch, Christoph van Treeck
Institute of Energy Efficiency and Sustainable Building (E3D), RWTH Aachen University, Germany

Abstract: Building Information Modeling aims at the use of digital building data in all planning processes. However, several challenges arise when using BIM data in the IFC file format to create building simulation models. Complex, detailed or erroneous data and the lack of software interfaces complicate and delay the simulation preprocessing. One way to reduce the simulation expert's effort is to provide space boundary data, which can be applied in both CFD and BEPS. This paper presents an algorithm for the generation of space boundaries based on the IFC data model. The focus is on model error resistance and simultaneous support of CFD and BEPS to accelerate simulation preprocessing, avoid redundant geometric model setup, and simplify the simulation result exchange.
Keywords: IFC, BIM, Space Boundaries, BEPS, EnergyPlus
Pages: 1083 - 1090