Reflectional symmetry breaking of the separated flow over three-dimensional bluff bodies.

@article{Grandemange2012ReflectionalSB,
  title={Reflectional symmetry breaking of the separated flow over three-dimensional bluff bodies.},
  author={Mathieu Grandemange and Olivier Cadot and Marc Gohlke},
  journal={Physical review. E, Statistical, nonlinear, and soft matter physics},
  year={2012},
  volume={86 3 Pt 2},
  pages={035302}
}
Experimental observation of a permanent reflectional symmetry breaking (RSB) is reported for a laminar three-dimensional wake. Based on flow visualizations, a first bifurcation from the trivial steady symmetric state to a steady RSB state is characterized at Re=340. The RSB state becomes unsteady after a second bifurcation at Re=410. It is found that this RSB regime is persistent at large Reynolds numbers and is responsible for a bistable turbulent wake. 

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