Wavelet tools to study vortex bursting and turbulence production

International audienceSince there is not yet any agreement among specialists of turbulence about what coherent structures are and which method is the best to extract them, we propose an apophatic approach where, rather than stating what the coherent structures are, we make assumption about what they are not. We suppose that coherent structures are different from noise, and we thus define them as what remains after denoising. For the noise we use the mathematical definition of randomness, stating that a noise is homogeneously distributed in any functional basis