Two-dimensional global low-frequency oscillations in a separating boundary-layer flow

@inproceedings{Ehrenstein2008TwodimensionalGL,
  title={Two-dimensional global low-frequency oscillations in a separating boundary-layer flow},
  author={Uwe Ehrenstein and François Gallaire},
  year={2008}
}
A separated boundary-layer flow at the rear of a bump is considered. Two-dimensional equilibrium stationary states of the Navier–Stokes equations are determined using a nonlinear continuation procedure varying the bump height as well as the Reynolds number. A global instability analysis of the steady states is performed by computing two-dimensional temporal modes. The onset of instability is shown to be characterized by a family of modes with localized structures around the reattachment point… CONTINUE READING

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