Pseudo three-dimensional simulation of aeroelastic response to turbulent wind using Vortex Particle Methods

Aeroelastic analyses of bridges using a Pseudo-3D vortex method and velocity-based synthetic turbulence generation

“…It is important to stress out that the PTG method: (i) is only valid for isotropic turbulence; and (ii) considers only the one fluctuating velocity component for obtaining the circulation, which is derived based on the standard deviation instead of the PSD (see Eq. (37) from [20]). The VTG method for the free-stream turbulent fluctuations used herein is able to partially model anisotropic flow conditions, as discussed in Sec.…”

“…The idea of introducing empirically correlated free-stream turbulence to the Pseudo-3D VPM was utilized recently by Tolba and Morgenthal [20]. Therein, instead of using the VTG explained in Sec.…”

“…Recently, Tolba and Mogenthal [20] extended the laminar Pseudo-3D VPM to account for the isotropic free-stream turbulence by introducing a particle-based turbulence generation (PTG). Unlike in the VTG, in this method, the circulation of the inflow particles is directly generated as a correlated random process, without prior generation of a velocity field.…”

“…The motivation for the development of the PTG, instead of using the VTG for the Pseudo-3D buffeting analysis, was the inability of VTG method to retain the correlation between slices. The authors argued that with the VTG method "the correlations are not maintained in the process of their transformation to inflow vortex particles" [20] for the Pseudo-3D VPM. Nevertheless, it was not shown to what extent is the loss of the span-wise correlation.…”