Affiliations: Center for Fluid Mechanics, Division of Applied
Mathematics, Brown University, Providence, Rhode Island 02912, USA
Abstract: We use direct numerical simulation (DNS) based on spectral methods
and the parallel code NekTar to simulate incompressible and compressible flow
past flexible structures. Specifically, we consider incompressible turbulent
flow past flexible cylinders subject to vortex-induced vibrations (VIV), and
compressible flow past a three-dimensional flexible wing subject to insect-like
motion. We present several shedding patterns that reveal new oblique shedding
modes resembling modulated traveling and standing wave response waves for
flexible cylinders as well as strong three-dimensional interactions for
flexible wings.
Keywords: turbulent wakes, direct numerical simulations