1 Department of Civil Engineering, Technical University of Denmark2 Section for Structural Engineering, Department of Civil Engineering, Technical University of Denmark3 Rambøll Danmark A/S
An Embedded LES approach is used to numerically simulate fluctuating surface pressures on a floor-mounted cube in a turbulent boundary layer flow and compared to wind tunnel experiments. The computation were performed with the CFD software ANSYS FLUENT at a Reynolds number at cube height of Reh = 1.3x105. The computational mesh exists of 0.77 and 4.7 million hexahedra cells in the RANS and LES domains, respectively. The computed mean values are found to be accurate while the frequency spectrum of the upstream flow is not well captured due to failure of the upstream RANS-LES interface to produce correct velocity scales. However, the body induced turbulence is well captured in the fluctuating pressure coefficients.