Coherent vortex extraction and simulation of 2D isotropic turbulence

@inproceedings{Schneider2006CoherentVE,
  title={Coherent vortex extraction and simulation of 2D isotropic turbulence},
  author={Kai Schneider and J{\"o}rg Ziuber and Marie Farge and Alexandre Azzalini},
  year={2006}
}
We present a method to extract coherent vortices out of turbulent flows, based on thresholding the wavelet coefficients of vorticity. We compare two ways of choosing the threshold and show how one can thus split each flow realization into coherent vortices and quasi-Gaussian white noise. We then describe a new method, called CVS (coherent vortex simulation), for computing deterministically the time evolution of the coherent vortices while neglecting or modelling the incoherent background noise… CONTINUE READING

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