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  4. Automated IFC-based mesh refinement and quality control for indoor airflow simulations using OpenFOAM
 
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Automated IFC-based mesh refinement and quality control for indoor airflow simulations using OpenFOAM

Citation Link: https://doi.org/10.15480/882.13503
Publikationstyp
Conference Paper
Date Issued
2024-09-18
Sprache
English
Author(s)
Hochberger, Anna  
RWTH Aachen University  
Richter, Veronika  
RWTH Aachen University  
TORE-DOI
10.15480/882.13503
TORE-URI
https://hdl.handle.net/11420/49595
Start Page
284
End Page
291
Citation
35. Forum Bauinformatik, fbi 2024: 284-291
Contribution to Conference
35. Forum Bauinformatik, fbi 2024  
Publisher
Technische Universität Hamburg, Institut für Digitales und Autonomes Bauen
Peer Reviewed
true
Computational fluid dynamics (CFD) simulations are an essential tool for indoor airflow simulations and in the design process of energy-efficient buildings. Setting up CFD models typically demands considerable manual effort, including the modeling of geometry, defining boundary conditions, and meshing. This complex and labor-intensive process can be streamlined by automatically generating indoor CFD models from IFC-based Building Information Modeling (BIM) models. To integrate this CFD model setup in an existing tool, a plugin for the IFC-based multi-domain bim2sim simulation environment with the open-source CFD library OpenFOAM was developed, including automated meshing and refinements. As the accuracy of simulation results highly depends on the mesh quality, the mesh must satisfy specific quality criteria. Furthermore, balancing a sufficiently detailed solution provided by finer grids and reasonable runtimes is a persistent challenge in CFD.This paper presents algorithms for automatic IFC-based mesh refinement for interior elements like radiators and air terminals. These algorithms are evaluated by refinement studies and a mesh quality analysis in a case study of a single office. The proposed optimal grid refinements can be used in further research to automatically set up CFD simulations for IFC-based thermal comfort analysis.
Subjects
BIM
CFD
IFC
Meshing
OpenFOAM
DDC Class
620.1: Engineering Mechanics and Materials Science
519: Applied Mathematics, Probabilities
Publication version
publishedVersion
Lizenz
https://creativecommons.org/licenses/by/4.0/
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