Article,

Flow coherent structures and frequency signature: application of the dynamic modes decomposition to open cavity flow

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Journal of Physics: Conference Series, 318 (4): 042036 (2011)

Abstract

The dynamic dimension of an impinging flow may be significantly reduced by its boundary conditions and self-sustained oscillations they induce. The spectral signature is associated with remarkable spatial coherent structures. Dynamic modes decomposition (DMD) makes it possible to directly extract the dynamical properties of a non-linearly saturated flow. We apply DMD to highlight the spectral contribution of the longitudinal and transverse structures of an experimental open-cavity flow.

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