Imperfect supercritical bifurcation in a three-dimensional turbulent wake.

@article{Cadot2015ImperfectSB,
  title={Imperfect supercritical bifurcation in a three-dimensional turbulent wake.},
  author={Olivier Cadot and Antoine Evrard and Luc Pastur},
  journal={Physical review. E, Statistical, nonlinear, and soft matter physics},
  year={2015},
  volume={91 6},
  pages={
          063005
        }
}
The turbulent wake of a square-back body exhibits a strong bimodal behavior. The wake randomly undergoes symmetry-breaking reversals between two mirror asymmetric steady modes [reflectional symmetry-breaking (RSB) modes]. The characteristic time for reversals is about 2 or 3 orders of magnitude larger than the natural time for vortex shedding. Studying the effects of the proximity of a ground wall together with the Reynolds number, it is shown that the bimodal behavior is the result of an… CONTINUE READING

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