Wind & Environment > Case Studies > Puy-du-Fou France

Unsteady wind loads on a retractable roof a stadium


Overview: Wind effects on urban structures(towers, tall & slender buildings, stadiums, etc.) can be a major design criterion. The analysis of flows past bluff bodies itself poses serious challenges, includinginvolvement of unstable, turbulent boundary layers undergoing separation and reattachment, the formation of vortices and the development of trailing vortices. Such flow events are observed in newly designed (or refurbished) stadiums with retractable roofs, for soccer, tennis, etc.

The challenge: The engineering challenge here is to accurately predict the unsteady wind loads on these structures. It is important to predict the peak wind load on the roofs in particular, so that the structure is correctly dimensioned to withstand these conditions. Although wind tunnel tests can be used, they give results only at a finite number of points, whereas it is important to determine the wind-loads on the full area of the roof to identify possible weak structural zones.

TransAT Solution: At ASCOMP we explore efficient simulation methods for analyzing wind-induced loading and response of buildigs and other geometrically complex bodies and possible interaction effects with structural oscillations. Thanks to the LES and V-LES (in case the Reynolds number is too high) capabilities, TransAT delivers instantaneous wind loads and structural response. The wind engineering module in TransAT involves consideration of the atmospheric boundary layer as influenced by thermal stratification, surface roughness, Corriolis and other effects. It also includes the possibility to enter true meteorological data.

InfoExpert: Contact our expert

Dr Mathieu Labois
ASCOMP Switzerland
Tel. + 41-44-445-4072