Abstract
We use direct numerical simulation (DNS) based on spectral methods and the parallel codeNekTar 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.
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Constantinos Evangelinos: He received his B.Sc. from Cambridge University in 1993, and his Ph.D. from Brown University in 1999, both in Applied Mathematics. His research interests are in parallel computing and direct numerical simulation of flow-structure interactions.
Igor Lomtev: He received his M.Sc. from Moscow State University in 1991 and his Ph.D. from Brown University in 1999, both in Applied Mathematics. His work has contributed to the development of discontinuous Galerkin spectral methods for compressible viscous flows.
George Em Karniadakis: He received his M.Sc. and Ph.D. from Massachusetts Institute of Technology in 1984 and 1987, respectively, both in Mechanical Engineering. He did his postdoc at Stanford University, and he previously taught at Princeton University. He is currently Professor of Applied Mathematics at Brown University. He has pioneered spectral methods on unstructured grids and parallel simulations of turbulence in complex geometries.
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Evangelinos, C., Lomtev, I. & Em Karniadakis, G. Shedding patterns in flow-structure interactions. J Vis 2, 135–142 (1999). https://doi.org/10.1007/BF03181516
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DOI: https://doi.org/10.1007/BF03181516