COMPARISON OF DIVERGENCE SCHEMES APPLIED TO THE STATIC CASE OF THE GREAT BELT EAST BRIDGE

Resumo

The behavior of slender structures to the action of the wind is the object of study in numerous works.
With the constant evolution of Computational Fluid Dynamics (CFD), obtaining and analyzing results through
numerical methods has been increasingly used by researchers in order to provide reliable parameters for new
engineering projects. In this study, simulations are presented with a 2D approach of the static case of the Great
Belt East Bridge in turbulent flow with Re 105

, applying the k-ω SST turbulence model to the simulation with
the Reynolds Averaged Navier-Stokes methodology (RANS), which deals with an averaging operation applied
to the Navier-Stokes equations to obtain the average fluid flow equations. The simulations were performed via
OpenFOAM®, using four divergence schemes: Gauss QUICK, Gauss upwind, Gauss linearUpwind, and Gauss
limitedLinear. Then, a comparison was made of the average values of the dimensionless aerodynamic coefficients
of drag (Cd), lift (Cl) and moment (Cm), in addition to the Strouhal number (St). There was also an evaluation
of the computational performance of the schemes applied in the simulations. In conclusion, the QUICK scheme
presented promising results in all analyses, and the others were within an acceptable range, with some values close
to those found in the literature. Finally, the results obtained via CFD were validated and considered satisfactory,
proving the effectiveness of this methodology.