000022657 001__ 22657
000022657 005__ 20170724144659.0
000022657 04107 $$aeng
000022657 046__ $$k2017-07-04
000022657 100__ $$aRamponi, Rubina
000022657 24500 $$aCFD and PIV study of the airflow in and around a saddle-shaped double-roofed stadium

000022657 24630 $$n7.$$p7th European and African Conference on Wind Engineering 
000022657 260__ $$bl'Association pour l'Ingénierie du Vent
000022657 506__ $$arestricted
000022657 520__ $$2eng$$aThe aerodynamic behavior of the roof of an open-air stadium is an important design consideration to ensure comfortable thermal conditions in the occupied zone. This is crucial for the design of stadia in hot climates, which relies on an accurate assessment of the interaction between the wind and the building. Computational Fluid Dynamics (CFD) simulations are a valuable tool to predict the wind conditions in and around stadia, as they provide a continuous solution of the flow field. Validation with wind tunnel data is recommended to support the reliability of CFD results, but relatively few experimental data are available for large and geometrically complex structures. Particle Image Velocimetry (PIV) is an optical technique that captures the instantaneous velocity fields over an extended 2D region and provides high spatial resolution data, which may be used for CFD validation. This study focuses on the comparison between the CFD simulations and PIV measurements of a doubleroofed stadium with saddle-shaped roof for the wind directions corresponding to the convex and concave roof profiles. Isothermal CFD simulations were performed using OpenFOAM-Ext using a Large Eddy Simulation (LES) turbulence model; PIV measurements were conducted on a 1:200 scale physical model in the Boundary Layer Wind Tunnel of BMT Fluid Mechanics. The results point out the different flow mechanisms that occur for the two wind directions and show good performance of CFD to reproduce the wind pattern around the stadium. Some issues related with the time scale and the geometrical representation of the stadium in the two cases are discussed in the paper.

000022657 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000022657 653__ $$a

000022657 7112_ $$a7th European and African Conference on Wind Engineering$$cLiège, BE$$d2017-07-04 / 2017-07-07$$gEACWE2017
000022657 720__ $$aRamponi, Rubina$$iWalker, Steve$$iUcuncu, Mutlu$$iLynch, Paul$$iMatteoni, Giulia
000022657 8560_ $$ffischerc@itam.cas.cz
000022657 8564_ $$s1013934$$uhttps://invenio.itam.cas.cz/record/22657/files/230.pdf$$yOriginal version of the author's contribution in proceedings, id 230, section .
000022657 962__ $$r22493
000022657 980__ $$aPAPER