A computational study on the aerodynamics of a twin-box bridge with a focus on the spanwise features

The wind flow around twin-box decks is particularly complex due to the very important role played by slot distance between girders and presence of downwind box that immersed in wake upwind box. Detailed experimental studies on three-dimensional features this deck typology are certainly challenging, CFD simulations have not tackled problem so far. goal 3D LES piece research shed some light decks, when geometry fully transversal beams linking together girders. Integral parameters, mean instantaneous structures spanwise correlations studied for a segment Stonecutters Bridge. It has been found beam plays key correlation loss, identifying, instance, out-of-phase shedding vortices at different sides beam. numerical results agree well with data literature, offer richer more comprehensive explanation identified aerodynamic responses.