KIT | KIT-Bibliothek | Impressum | Datenschutz

Application and assessment of a GPU-based LES method for predicting dynamic wind loads on buildings

Papp, Bálint; Kristóf, Gergely; Gromke, Christof ORCID iD icon 1
1 Institut für Hydromechanik (IFH), Karlsruher Institut für Technologie (KIT)

Abstract:

This study presents the assessment of a fast Large Eddy Simulation method for estimating dynamic wind loads on buildings using a GPU-based CFD software, which produces statistically converged results on a nine-million-cell mesh in approximately 6 hours. The surface pressure distribution of a cuboid building model was validated with experimental data obtained in an atmospheric boundary layer wind tunnel and compared with field measurements. Although due to the applied equidistant Cartesian grid the large gradients near the edges are not fully resolved, good overall agreement was found for the mean and fluctuating pressure distributions (correlation coefficient: 0.90/0.73, FAC2: 0.92/0.98, FB: −/0.06, MG: −/0.95, NMSE: −/0.10, VG: −/1.08). It was shown that the numerical model is able to produce matching turbulent spectra in an intermediate frequency range within the inertial subrange, limited by the domain size and the spatial resolution. Mesh refinement for capturing large gradients as well as for expanding the frequency limits can be achieved by using a GPU with higher VRAM capacity for the simulation. The continuing advancement of the presented model is a promising development for estimating dynamic wind loads on buildings and identifying design problems fast enough for the engineering practice, without high-performance computing.


Verlagsausgabe §
DOI: 10.5445/IR/1000136977
Veröffentlicht am 08.09.2021
Originalveröffentlichung
DOI: 10.1016/j.jweia.2021.104739
Scopus
Zitationen: 13
Web of Science
Zitationen: 11
Dimensions
Zitationen: 11
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Hydromechanik (IFH)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 10.2021
Sprache Englisch
Identifikator ISSN: 0167-6105, 0304-3908, 1872-8189, 1872-8197
KITopen-ID: 1000136977
Erschienen in Journal of Wind Engineering and Industrial Aerodynamics
Verlag Elsevier
Band 217
Seiten Art.-Nr.: 104739
Nachgewiesen in Dimensions
Web of Science
Scopus
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft
KITopen Landing Page