Abstract
According to experimental observations, the vortices generated by vortex generators have previously been observed to be self-similar for both the axial (uz) and azimuthal (uθ) velocity profiles. Further, the measured vortices have been observed to obey the criteria for helical symmetry. This is a powerful result, since it reduces the highly complex flow to merely four parameters. In the present work, corresponding computer simulations using Reynolds- Averaged Navier-Stokes equations have been carried out and compared to the experimental observations. The main objective of this study is to investigate how well the simulations can reproduce the physics of the flow and if the same analytical model can be applied. Using this model, parametric studies can be significantly reduced and, further, reliable simulations can substantially reduce the costs of the parametric studies themselves.
Highlights
Vortex Generators (VG) have been investigated for more than fifty years in applied aerodynamics on airplane wings, Taylor [1] and Wentz [2]
Vortices generated by a passive rectangular vane-type vortex generator of the same height as the boundary layer thickness in a test section wall have been studied
CFD computational simulations at Reynolds Number Re=2500 have been carried out using the RANS method and compared with wind tunnel experimental data and an analytical model
Summary
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