Assessment Of The Aerodynamic Response Of
Bridge Decks By Means Of 2D Reynolds
Averaged Navier-Stokes Simulations
Author(s)
F. Nieto, S. Hernández, I. Kusano & J. Á. Jurado
Abstract
The results of several bridge decks 2D steady and unsteady RANS (Reynolds
Averaged Navier-Stokes) simulations are reported in this work. The focus has
been put on the potential of CFD based simulations in industrial applications in
the realm of bridge engineering aerodynamic and aeroelastic problems. The force
coefficients of a box deck have been computed at different angles of attack
finding a good match with the experimental data available in the literature. Also
CFD steady simulations have been used to obtain the force coefficients of a Π
section considered in the original design proposal of a cable-stayed bridge. Based
on the numerical computations, modifications in the original design have been
proposed adding fairings and baffles which showed an improved aerodynamic
response. The scale effects in the performance of guide vanes for mitigating the
vortex-induced response of a twin box girder have been analyzed by means of
CFD obtaining a good agreement with experimental measurements. Finally
the effect of wind barriers in a twin box deck have been assessed based on the
spectrum of the lift coefficient for both the cross-section fitted with or without
wind barriers.
Keywords: CFD, bridge deck, RANS, URANS, force coefficients, vortex
shedding.
Keywords
CFD, bridge deck, RANS, URANS, force coefficients, vortex
shedding.
Related Book
Other papers in this volume
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